SAFETY AND RELIEF STEEL VALVES

CATALOG

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INDEX Introduction

Introduction ............................................................................................................................................ walworth Company .......................................................................................................................... walworth Values ............................................................................................................................... WALWORTH Engineering Control ........................................................................................................ WALWORTH Quality System ................................................................................................................. Quality Control Equipment ....................................................................................................................

3 4 4 5 5 9

Pressure Safety And Relief Valves for Steam, Air or Gas Service WALWORTH MODEL 1541 AND 1541-3 ................................................................................................ MATERIALS FOR MODELS 1541 AND 1541-3 ...................................................................................... SIZE AND WEIGHT FOR MODELS 1541 AND 1541-3 ........................................................................... ASME B AND PVC, SECTION I RATING - 2001 EDITION ........................................................................

(POUND PER HOUR SATURATED STEAM AT 3% OVERPRESSURE)

11 12 13 14

ASME B AND PVC, SECTION VIII RATING - 2001 EDITION ...................................................................... 15 (POUND PER HOUR SATURATED STEAM AT 10% OVERPRESSURE)

ASME B AND PVC, SECTION VIII RATING - 2001 EDITION ..................................................................... 16 (STANDARD CUBIC FEET PER MINUTE OF AIR)

OVERPRESSURE FACTORS FOR STEAM, AIR OR GAS SAFETY VALVES ...................................... 17 PIPE CAPACITY ...................................................................................................................................... 18 APPLICATION AND SELECTION VALVE 1541 ..................................................................................... 19 Relief Valves for Liquids Service WALWORTH MODEL 1478 AND 1478-3 ................................................................................................ MATERIALS FOR MODELS 1478 AND 1478-3 ....................................................................................... SIZE AND WEIGHT FOR MODELS 1478 AND 1478-3 ............................................................................. GALLONS OF WATER PER MINUTE AT 25% ACCUMULATION .......................................................... ENGINEERING DATA ............................................................................................................................. OVERPRESSURE FACTORS FOR RELIEF VALVES FOR LIQUIDS SERVICE .................................. APPLICATION AND SELECTION VALVE 1478 ..................................................................................... TEMPERATURE CONVERSION TABLE ................................................................................................ technical information .................................................................................................................. design basis ....................................................................................................................................... how to order ..................................................................................................................................... WALWORTH´S general terms and conditions ........................................................................

20 21 22 23 24 24 25 26 29 32 33 34

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WALWORTH COMPANY The WALWORTH Company is one of the world´s most dominant and comprehensive industrial valve manufacturers. Founded in 1842 by James Walworth, the Company has consistently dedicated itself to the design and manufacture of an array of valves exceptionally suited for the world´s fluid control sector. We satisfy all end use industries and comprehensive customer requirements by adhering to the most demanding quality standards. WALWORTH relies on its broad experience in supplying valves to the petrochemical, oil & gas, petroleum, power generation, pulp and paper, cryogenic and geothermal industries, among others. Over the years, the Company has produced more than 40,000 different types of products and serves as a global supplier to varied markets utilizing the expertise of over 500 trained employees. Our manufacturing system includes: utilization of Company directed raw material warehouses; up-to-date specialized machinery; welding processes such as SMAW, GMAW, SAW, PAW; assembly testing for low pressure, high pressure, at low or high temperature; painting processes; crating and shipment. With Company-directed facilities and stocks in the United States and Mexico, WALWORTH is capable of providing the world´s most comprehensive industrial valve line to the North American, Central American, South American, European and African markets. WALWORTH is proud to meet and satisfy the ultimate demands of our customers throughout the world for quality, cost and service.

WALWORTH VALUES MISSION WALWORTH manufactures and supplies world-class valves and components for the flow control industry through exceptional service, competitive pricing, and consistently, on-time delivery. VISION To be the world leader of unparalleled valve manufacturing and supply, WALWORTH: • • • •

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Sets the standard for product quality in the flow control industry. Exceeds the service expectations of our customers. Forges enduring relationships with customers, team members, and community. Hires, develops, and retains experienced and dedicated team members.

WALWORTH ENGINEERING CONTROL WALWORTH products are manufactured following the strict international standards recognized all over the world, such as API, ANSI, ASME, ASTM, MSS, NACE, AWWA, BSI, CSA, among others. Our Engineering team consistently monitors updates to these standards and incorporates any applicable changes that affect the design, regulations and/or performance of our products. Our designs are made using the most advanced technology and equipment, finite elements, and CAD system programs to ensure proper assembly and performance. From conception to calculation to detailed drawings for manufacturers, WALWORTH is a leader in development of new products that meet the needs of the current valve market.”

WALWORTH QUALITY SYSTEM Throughout the years, WALWORTH has developed its Quality System which is an integral part of our manufacturing policy. Our primary goal is to provide products that meet and exceed market standards. In this sense, WALWORTH is an ISO-9001 Audited and Certified Company that has achieved major certifications worldwide. Our system includes the selection of raw materials from approved vendors, and rigorous oversight of our manufacturing process that is vital to quality control. The use of serial numbers allows WALWORTH the ability to not only ensure the quality of components used but to monitor and trace the fabrication process as well.

Certificate API-6D No. 6D-0097 issued by American Petroleum Institute to apply on Gate valves, Plug valves, Ball valves and Check valves manufactured in accordance with API-6D specification.

Certificate API-6A No. 6A-0234 from American Petroleum Institute to apply on valves at PSI, 1 through 4.

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Certificate ISO-9001 No. 0038 issued by American Petroleum Institute since April 1999.

Certificate as per PED 97/23/EC products.

Certificate of Reliable Supplier No. 082/11 issued by CFE in accordance with ISO-9001 Quality Assurance System.

Certificate NMX-CC-9001 (Mexican Standards ISO-9001) No. 0552/2007 issued by PEMEX in accordance with ISO-9001 Quality Assurance System.

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Module H to stamp CE

In addition to the Quality System Certifications, WALWORTH has achieved the following specific product certifications:

TA Luft Certificate (Fugitive Emission) Approval ISO-5211 Top Flange, Anti-Static Device.

Certificates of Ultra Low Fugitive Emissions No. 20985-3, 8 & 16 in accordance with ISO-15848-1 “Industrial Valves”Measurement, Test and Qualification Procedures for Fugitive Emissions” “Part 1: Classification System and Qualification Procedures for Type Testing of Valves”.

Fire Test Certificate No. 04/04 in accordance with API-6FA and API Standard API-607 for Trunnion Ball Valves in accordance with API-6D. www.walworthvalves.com

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Emissions after 500 cycles at ambient and 350 °F issued by Yarmouth Research and Technology Lab for 3 inch Class 300 Gate Valve After 500 cycles the measurement result was less than 50 ppm.

Certificate API-594 No. 594-0007 issued by American Petroleum Institute to apply on Check Valves-Type A; Check Valves Type B manufactured in accordance with API-594 specification.

Emissions after 500 cycles at ambient and 350 °F issued by Yarmouth Research and Technology Lab for 8 inch Class 300 Gate Valve After 500 cycles the measurement result was less than 50 ppm.

API-600 Certificate No. 600-0109 issued by American Petroleum Institute to apply on Bolted Bonnet Steel Gate Valves manufactured in accordance with API-600 specification.

Emissions after 500 cycles at ambient and 350 °F issued by Yarmouth Research and Technology Lab for 16 inch Class 150 Gate Valve After 500 cycles the measurement result was less than 50 ppm.

API-602 Certificate No. 602-0024 issued by American Petroleum Institute to apply on Compact Steel Gate Valves, Compact Steel Globe Valves, and Compact Steel Check Valves manufactured in accordance with API-602 specification.

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QUALITY CONTROL EQUIPMENT In order to assure that WALWORTH products comply with international quality standards, in-house equipment is kept for monitoring control. Some of this equipment includes:

X-Ray Examination Equipment. WALWORTH has its own Ir-92 source in-house for the radiographic examination (RT) of castings from 0.100” up to 2 1/2” wall thickness to verify the soundness of the casting raw material.

PMI Equipment. A new generation of Positive Material Identification Equipment gives WALWORTH the capability to perform quick chemical analysis on incoming raw materials and on pieces after assembly, to certify that materials used were produced and assembled in accordance with WALWORTH’s and our Customer’s specifications.

Magnetic Particle Test. On a random basis for standard products or when a Customer requests MT Certification, WALWORTH has Magnetic Particle Test Equipment to perform on ferromagnetic materials.

Penetrant Test Examination. WALWORTH has the personnel and materials to perform PT examination by solvent removable or water washable techniques. NDT personnel are ASNT Certified.

Test Loop. A complete Laboratory Test loop exists for design validation of WALWORTH products. The test is performed at maximum design pressure, advances the valves from 3000 to 5000 cycles, and requires more than four months to complete.

Pressure Gradient Test Loop. This test exposes Plug valves to the extremes of both positive and negative pressure gradients to verify that the plug in a balanced plug design will prevent lock-up in the body.

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Metrology Laboratory. WALWORTH developed a calibration and/or verification system in all of the equipment used in its facilities. This ensures our ability to trace measurements, control products, and comply with international standards.

Fire Test Facilities. WALWORTH has the facilities to perform fire tests in accordance with API requirements. The test exposes the valve to a fire flame at 1400 to 1800 °F (761 to 980 °C) to verify proper seal of the valve.

Low Fugitive Emissions Test. This test is performed when a Customer requires low fugitive emissions certification. Our Lab has its own LFE test equipment that is capable of measuring less than 20 ppm in both static and mechanical conditions at either ambient temperature or thermal cycle operations.

Ultrasonic Testing Equipment. Using ultrasonic techniques, we can detect sub surface flaws in materials and evaluate castings and forgings that cannot be radiographed. In addition, we utilize these techniques to measure the wall thickness of castings and forgings.

Tensile Test Equipment. We use this equipment to verify the mechanical properties of materials used for manufacturing. WALWORTH tests samples on a random basis even though we receive MTRs from our suppliers and foundries.

Hardness Test Equipments.- In both lab and shop tests, WALWORTH uses hardness tester equipment, such as Rockwell B, C Brinell or Vickers, to ensure compliance with specifications.

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WALWORTH STEEL SAFETY AND RELIEF VALVES

These valves work to release overpressure in a piping system. WALWORTH offers these kinds of valves as a solution for the automatic release of pressure from either a boiler, pressure vessel or other systems when the pressure or temperature exceeds preset limits. WALWORTH offers the following type of materials: a) Carbon Steel WCB b) Stainless Steel CF8 & CF8M c) Low carbon steel LC3 TRIM materials: a) Stainless Steel 304 & 316

Orifice Designation Orifice

Minimum Area (ASME) actual

Minimum Area (API) inches

mm2

inches

mm2

D

0.110

71

0.1279

83

E

0.196

126

0.2279

147

F

0.307

198

0.3568

230

G

0.503

325

0.5849

377

H

0.785

506

0.9127

589

J

1.287

830

1.496

965

K

1.838

1186

2.138

1379

L

2.853

1841

3.317

2140

M

3.60

2323

4.187

2701

N

4.34

2800

5.047

3256

P

6.38

4116

7.417

4785

Q

11.05

7129

12.85

8290

R

16.0

10323

18.60

12000

T

26.0

16774

28.62

18464

inches

Inlet size (Screwed)

Model

mm

Minimum Area (ASME) actual inches

mm2

½, ¾, 1

13, 19, 25

1975

0.110

71

¾

19

1970

0.126

81

1

25

1970

0.226

146

1½,2

28, 51

1970

0.522

337

Product Range Type

Size

Class

Ends

Safety and Relief Steel Valves

1” x 2” to 8” x 10"

150 x 150, 300 x 150, 600 x 150 PSIG.

RF or RTJ

Portable Safety and Relief Steel Valves

3/4” x 1” to 2” x 2”

2000 to 5000 PSIG.

Threaded, Socket Weld or RF or RTJ

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WALWORTH STEEL SAFETY AND RELIEF VALVES CONVENTIONAL TYPE 1900 SERIES

Steel safety and relief valves conventional type purpose is to relief overpressure inside a pressure vessel, power boiler, piping or any other type of system at a certain flow. This design covers almost all possible applications; its eductor tube removes the pressure from the bonnet assuring the proper valve operation.

Design characteristics • • • • • •

Relief capacity according to ASME SECC. VIII DIV 1 Orifice area according to ASME SECC. VIII DIV 1 Distance between faces according to a API 526 Flange dimensions according to ASME B16.5 NACE Service according to MR-01-75 o MR-01-03 Tests according to API527

1 2

3

4

5

6

7

8

Walworht Steel Safety and relief valves can be built with a standard cap (screwed), flanged cap, plain lever or packed lever. The needle head is attached to the disc holder by a pressure retainer and a housing at the disc holder. This ensemble is very secure and hard to break. The disc housing at the disc holder has a similar design to the one of a rod, so at difficult service conditions or a misalignment the disc may adjust by its self and keeps an hermetic seal. Adjusting ring, it is the element that adjust the blow down or differential pressure, by raising it the blow down increases (closure pressure decreases) and by handing down the blow down decreases (closure pressure increases). The ideal blow down is the one that makes the valve close at the operation pressure of the accessory at which the valve is installed. Nozzle, the orifice at the superior area of the nozzle is the one that defines the valve capacity, the inlet machining of this element is designed according to the ASME specifications. Eductor tube, it connects the valve Bonnet to the outlet in order to avoid the accumulation of pressure at the bonnet and assure a proper operation of the valve. Spring, WALWORTH offers springs in different type of materials to meet your process necessities, the standard spring is made out of carbon Steel, for high temperature service and in Alloy Steel with a high content of Tungsten for low temperatures Austenitic Stainless Steel. Adjusting screw, it is the adjusting element that compress the spring until a certain position to define the calibration pressure of the valve, WALWORTH personnel pays a lot of a attention to this element.

Fijación de la Capacidad Máxima

1

Cap

2

Needle Head

3

Disc Holder

4

Adjusting Ring

5

Nozzle

Adjusting Screw

8

Spring

7

Eductor Tube

6

The steel safety and relief valves have in their design a secondary orifice and a ring that can be adjusted to reduce the forces that rise the seal disc, to obtain the complete lift that will provide the flow capacity required in a shorter time. The maximium relief capacity is obtained in any normal position of the adjust ring. This is achievable because of the design of the disc holder, Form a pressure storage chamberand and of course the secondary orifice gives a 180º direction to the flow

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WALWORTH STEEL SAFETY AND RELIEF VALVES

CONVENTIONAL TYPE 1900 SERIES

Design Features

• Orifice from “D” to “T” • Inlet size x outlet size from 1”x 2” to 8”x 10” Flanged ends • Class 150x150 to 600x150 • Closed Bonnet • Full Nozzle • Screwed cap • Actuated by Carbon Steel Spring -20°F (-28.9°C) a 450°F • (232.2°C), High Tungsten content alloy Steel 451°F (232.8°C) a 800°F • (426.7°C) Stainless Steel Spring -21°F (-29.4°C) a -450°F • (-267.7°C) • Minimum calibration pressure 5 PSI (0.35 kg/cm2)

16 21 16 23

Regular Bill of Materials

11

No.

Description Body

ASTM A-216 Grade WCB

2

Nozzle

ASTM A-276 Type 316/ A351 Gr CF8M

3

Disc

ASTM A-276 Type 316/ A351 Gr CF8M

4

Disc Retainer

ASTM A-313 Type 316

5

Adjusting Ring

ASTM A-276 Type 304/ A351 Gr CF8

6

Adjusting Ring Pin

ASTM A-276 Type 304

7

Disc Holder

ASTM A-276 Type 304/ A351 Gr CF8

8

Guide

ASTM A-276 Type 304/ A351 Gr CF8 ASTM A-276 Type 410

1

18

Trim WCB S1

12 13

14 24 28 9

19

9

Needle Head

10

Needle Retainer

ASTM A-313 Type 316

11

Bonnet

ASTM A-216 Grade WCB

12

Stud

ASTM A-193 Grade B7

13 15

Nut Carbon Steel Spring Tungsten Steel Adjusting Screw

ASTM A-194 Grade 2H ASTM A-228, A-229 ASTM A-681 Type H21 H26 ASTM A-276 Type 410

16

Tuerca Tornillo Compresión

ASTM A-276 Type 410

17

Eductor Tube

ASTM A-269 Type 304

18

Cap

ASTM A-108 Gr. 1018/ ASTM A-216 Grade WCB

26

19

Bonnet Gasket

ASTM A-635 Grade 1010

20

Guide Gasket

ASTM A-635 Grade 1010

6

21

Cap Gasket

ASTM A-635 Grade 1010

22

Junta Perno Anillo de Ajuste

ASTM A-635 Grade 1010

23

Stem

ASTM A-276 Type 410

24

Needle Head Pin

ASTM A-276 Type 410

25

Adjusting Ring Pin Head

ASTM A-276 Type 304

26

Nut

ASTM A-108 Gr. 1018

27

Plug

Commercial

28

Spring Washer

ASTM A-108 Gr. 1018

29

Limit Washer*

ASTM A-276 Type 304

30

Identification Plate**

Aluminium

14

10

8 29 10 7

4

3

25

5 20

27

22 1 17 2

*Limit washer is only used at orifices “D” and “E” **Not shown

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WALWORTH STEEL SAFETY AND RELIEF VALVES CONVENTIONAL TYPE 1900 SERIES

Dimensions and weights Orifice D

E

F

G

H

J

K

L

M

N

P

Q

R

T

14

Type

Size

1905D 1906D 1910D 1912D 1905E 1906E 1910E 1912E 1905F 1906F 1910F 1912F 1905G 1906G 1910G 1912G 1905H 1906H 1910H 1912H 1905J 1906J 1910J 1912J 1905K 1906K 1910K 1912K 1905L 1906L 1910L 1912L 1905M 1906M 1910M 1912M 1905N 1906N 1910N 1912N 1905P 1906P 1910P 1912P 1905Q 1906Q 1910Q 1912Q 1905R 1906R 1910R 1912R 1905T 1906T 1910-1T 1910-2T

1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1 1/2 X 2 1 1/2 X 2 1 1/2 X 2 1 1/2 X 2 1 1/2 X 3 1 1/2 X 3 1 1/2 X 3 1 1/2 X 3 1 1/2 X 3 1 1/2 X 3 2X3 2X3 2X3 2X3 3X4 3X4 3X4 3X4 3X4 3X4 3X4 3X4 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 6 X8 6 X8 6 X8 6 X8 6 X8 6 X8 6 X 10 6 X 10 8 X 10 8 X 10 8 X 10 8 X 10

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inch

4 1/8 4 1/8 4 1/8 4 1/8 4 1/8 4 1/8 4 1/8 4 1/8 4 7/8 4 7/8 4 7/8 4 7/8 4 7/8 4 7/8 4 7/8 4 7/8 5 1/8 5 1/8 5 1/8 6 1/16 5 3/8 5 3/8 7 1/4 7 1/4 6 1/8 6 1/8 6 1/8 7 1/4 6 1/8 6 1/8 7 1/16 7 1/16 7 7 7 7 7 3/4 7 3/4 7 3/4 7 3/4 7 1/8 7 1/8 8 7/8 8 7/8 9 7/16 9 7/16 9 7/16 9 7/16 9 7/16 9 7/16 9 7/16 9 7/16 10 7/8 10 7/8 10 7/8 10 7/8

A

mm

104.8 104.8 104.8 104.8 104.8 104.8 104.8 104.8 123.8 123.8 123.8 123.8 123.8 123.8 123.8 123.8 130.2 130.2 130.2 154.0 136.5 136.5 184.2 184.2 155.6 155.6 155.6 184.2 155.6 155.6 179.4 179.4 177.8 177.8 177.8 177.8 196.9 196.9 196.9 196.9 181.0 181.0 225.4 225.4 239.7 239.7 239.7 239.7 239.7 239.7 239.7 239.7 276.2 276.2 276.2 276.2

inch

4 1/2 4 1/2 4 1/2 4 1/2 4 1/2 4 1/2 4 1/2 4 1/2 4 3/4 4 3/4 6 6 4 3/4 4 3/4 6 6 4 7/8 4 7/8 4 7/8 6 3/8 4 7/8 4 7/8 7 1/8 7 1/8 6 3/8 6 3/8 6 3/8 7 1/8 6 1/2 6 1/2 7 1/8 8 7 1/4 7 1/4 7 1/4 8 8 1/4 8 1/4 8 1/4 8 3/4 9 9 10 10 9 1/2 9 1/2 9 1/2 9 1/2 9 1/2 9 1/2 10 1/2 10 1/2 11 11 11 11

B

mm

114.3 114.3 114.3 114.3 114.3 114.3 114.3 114.3 120.7 120.7 152.4 152.4 120.7 120.7 152.4 152.4 123.8 123.8 123.8 161.9 123.8 123.8 181.0 181.0 161.9 161.9 161.9 181.0 165.1 165.1 181.0 203.2 184.2 184.2 184.2 203.2 209.6 209.6 209.6 222.3 228.6 228.6 254.0 254.0 241.3 241.3 241.3 241.3 241.3 241.3 266.7 266.7 279.4 279.4 279.4 279.4

inch

17 17 17 1/2 17 1/2 17 17 17 1/2 17 1/2 17 3/4 17 3/4 18 1/4 19 17 3/4 17 3/4 18 1/4 19 19 1/2 19 1/2 20 1/4 23 21 1/4 21 1/4 23 3/4 28 3/4 24 1/2 24 1/2 28 29 1/4 28 3/4 28 3/4 32 32 29 3/4 29 3/4 32 36 1/4 33 33 34 1/4 39 34 1/4 34 1/4 41 43 1/2 41 41 43 1/4 46 43 43 45 1/2 47 1/2 47 1/2 47 1/2 50 1/4 53 3/8

C

mm

431.8 431.8 444.5 444.5 431.8 431.8 444.5 444.5 450.9 450.9 463.6 482.6 450.9 450.9 463.6 482.6 495.3 495.3 514.4 584.2 539.8 539.8 603.3 730.3 622.3 622.3 711.2 743.0 730.3 730.3 812.8 812.8 755.7 755.7 812.8 920.8 838.2 838.2 870.0 990.6 870.0 870.0 1041.4 1104.9 1041.4 1041.4 1098.6 1168.4 1092.2 1092.2 1155.7 1206.5 1206.5 1206.5 1276.4 1355.7

inch

5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 6 1/8 5 5/16 5 5/16 5 5/16 6 1/8 6 1/8 6 1/8 6 1/8 6 7/8 6 11/16 6 11/16 7 1/4 9 7 1/4 7 1/4 7 3/4 7 3/4 8 7/8 8 7/8 9 1/2 9 1/2 9 3/8 9 3/8 9 3/8 10 3/4 10 1/8 10 1/8 10 1/2 11 3/4 11 11 11 1/2 13 7/8 13 5/8 13 5/8 14 14 1/4 14 1/2 14 1/2 14 1/2 15 1/8 16 1/2 16 1/2 16 1/2 16 1/2

D

mm

134.9 134.9 134.9 134.9 134.9 134.9 134.9 134.9 134.9 134.9 134.9 155.6 134.9 134.9 134.9 155.6 155.6 155.6 155.6 174.6 169.9 169.9 184.2 228.6 184.2 184.2 196.9 196.9 225.4 225.4 241.3 241.3 238.1 238.1 238.1 273.1 257.2 257.2 266.7 298.5 279.4 279.4 292.1 352.4 346.1 346.1 355.6 362.0 368.3 368.3 368.3 384.2 419.1 419.1 419.1 419.1

inch

1 1/8 1 3/8 1 3/8 1 3/8 1 1/8 1 3/8 1 3/8 1 3/8 1 1/4 1 1/2 1 9/16 1 9/16 1 1/4 1 1/2 1 9/16 1 9/16 1 1/4 1 9/16 1 11/16 1 11/16 1 5/16 1 9/16 1 13/16 1 13/16 1 7/16 1 13/16 1 15/16 1 15/16 1 7/16 1 13/16 1 15/16 2 3/16 1 5/8 1 15/16 1 15/16 2 3/16 1 5/8 1 15/16 1 15/16 2 3/16 1 5/8 1 15/16 1 15/16 2 3/16 1 13/16 2 1/4 2 1/4 2 11/16 1 13/16 2 1/4 2 1/4 2 11/16 1 15/16 2 7/16 2 7/16 2 7/16

S

mm 28.6 34.9 34.9 34.9 28.6 34.9 34.9 34.9 31.8 38.1 39.7 39.7 31.8 38.1 39.7 39.7 31.8 39.7 42.9 42.9 33.3 39.7 46.0 46.0 36.5 46.0 49.2 49.2 36.5 46.0 49.2 55.6 41.3 49.2 49.2 55.6 41.3 49.2 49.2 55.6 41.3 49.2 49.2 55.6 46.0 57.2 57.2 68.3 46.0 57.2 57.2 68.3 49.2 61.9 61.9 61.9

Weight

Pounds 40.0 40.0 50.0 50.0 40.0 40.0 50.0 50.0 45.0 45.0 50.0 60.0 55.0 55.0 60.0 65.0 60.0 60.0 65.0 85.0 75.0 75.0 100.0 170.0 110.0 115.0 140.0 150.0 140.0 145.0 220.0 230.0 185.0 190.0 230.0 300.0 220.0 225.0 260.0 360.0 260.0 270.0 350.0 530.0 430.0 445.0 530.0 645.0 495.0 510.0 550.0 675.0 620.0 640.0 675.0 840.0

Kg

18.1 18.1 22.7 22.7 18.1 18.1 22.7 22.7 20.4 20.4 22.7 27.2 24.9 24.9 27.2 29.5 27.2 27.2 29.5 38.6 34.0 34.0 45.4 77.1 49.9 52.2 63.5 68.0 63.5 65.8 99.8 104.3 83.9 86.2 104.3 136.1 99.6 102.1 117.9 163.3 117.9 122.5 158.8 240.4 195.0 201.9 240.4 292.6 224.5 231.3 249.5 306.2 281.2 290.3 306.2 381.0

WALWORTH STEEL SAFETY AND RELIEF VALVES CONVENTIONAL TYPE 1900 SERIES

Dimensions and weights

D

C

A S B

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15

WALWORTH STEEL SAFETY AND RELIEF VALVES FUELLADA TYPE 1900-30 SERIES

Balanced valves have bellows that isolates the bonnet and superior parts of the valve from corrosive fluids and it also eliminates the effects of counter pressure.

Design characteristics: • • • • • •

Relief capacity according to ASME SECC. VIII DIV 1 Orifice area according to ASME SECC. VIII DIV 1 Distance between faces according to a API 526 Flange dimensions according to ASME B16.5 NACE Service according to MR-01-75 o MR-01-03 Tests according to API527 1

1 2

3

4

5

6

7

8

Walworht Steel Safety and relief valves can be built with a standard cap (screwed), flanged cap, plain lever or packed lever. The needle head is attached to the disc holder by a pressure retainer and a housing at the disc holder. This ensemble is very secure and hard to break. The disc housing at the disc holder has a similar design to the one of a rod, so at difficult service conditions or a misalignment the disc may adjust by its self and keep and hermetic seal. Adjusting ring, it is the element to adjust the blow down or differential pressure, by raising it the blow down increases (closure pressure decreases) and by handing down the blow down decreases (closure pressure increases). The ideal blow down is the one that makes the valve close at the operation pressure of the accessory at which the valve is installed. Nozzle, the orifice at the superior area of the nozzle is the one that defines the valve capacity, the inlet machining of this element is designed according to the ASME specifications. Bellows, it isolates the bonnet and superior parts of the valve from counter pressure and corrosive fluids, this way the valve may operate properly at conditions of fluctuant counter pressure. Spring, WALWORTH offers springs in different type of materials to meet your process necessities, the standard spring is made out of carbon Steel, for high temperature service in Alloy Steel with a high content of Tungsten and for low temperatures Austenitic Stainless Steel. Adjusting screw, it is the adjusting element that compress the spring until a certain position to define the calibration pressure of the valve, WALWORTH personnel pays a lot of a attention to this element.

Fijación de la Capacidad Máxima

Cap

Adjusting Screw

2

8

Spring

7

Bellows

6

Needle Head

3

Disc Holder

4

Adjusting Ring

5

Nozzle

Las Válvulas de Seguridad y Alivio tienen en su diseño un orificio secundario fijo y un anillo que puede ser ajustado para reducir las fuerzas que levantan el disco del sello y así obtener el levantamiento total que dará la capacidad de flujo requerida en tiempo más corto. La máxima capacidad de relevo es obtenida en cualquier posición normal del anillo de ajuste. Esto se logra gracias al diseño del portadisco, que junto con el anillo de ajuste forman una cámara acumuladora de presión y por supuesto al orifico secundario que direcciona el flujo de la corriente 180°.

16

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WALWORTH STEEL SAFETY AND RELIEF VALVES FUELLADA TYPE 1900-30 SERIES

Design Features

• Bellows, it isolates the bonnet and superior parts of the valve from counter pressure and corrosive fluids, this way the valve may operate properly at conditions of fluctuant counter pressure.

18

16 21 15 23 11

Regular Bill of Materials

13

No.

Description Body

ASTM A-216 Grade WCB

2

Nozzle

ASTM A-276 Type 316/ A351 Gr CF8M

3

Disc

ASTM A-276 Type 316/ A351 Gr CF8M

4

Bellows

Inoxidable 316L

5

Disc Retainer

ASTM A-313 Type 316

6

Adjusting Ring

ASTM A-276 Type 304/ A351 Gr CF8

1

Trim WCB S1

7

Adjusting Ring Pin

ASTM A-276 Type 304

8

Disc Holder

ASTM A-276 Type 304/ A351 Gr CF8

9

Guide

ASTM A-276 Type 304/ A351 Gr CF8

10

Needle Head

ASTM A-276 Type 410

12

24 14 28 9 19

11

Needle Retainer

ASTM A-313 Type 316

12

Bonnet

ASTM A-216 Grade WCB

13

Stud

ASTM A-193 Grade B7

14 16

Nut Carbon Steel Spring Tungsten Steel Adjusting Screw

ASTM A-194 Grade 2H ASTM A-228, A-229 ASTM A-681 Type H21 H26 ASTM A-276 Type 410

25

17

Tuerca Tornillo Compresión

ASTM A-276 Type 410

18

Eductor Tube

ASTM A-269 Type 304

26

19

Cap

ASTM A-108 Gr. 1018/ ASTM A-216 Grade WCB

20

Bonnet Gasket

ASTM A-635 Grade 1010

21

Guide Gasket

ASTM A-635 Grade 1010

22

Cap Gasket

ASTM A-635 Grade 1010

23

Junta Perno Anillo de Ajuste

ASTM A-635 Grade 1010

24

Stem

ASTM A-276 Type 410

25

Needle Head Pin

ASTM A-276 Type 410

26

Adjusting Ring Pin Head

ASTM A-276 Type 304

27

Nut

ASTM A-108 Gr. 1018

15

28

Plug

Commercial

29

Spring Washer

ASTM A-108 Gr. 1018

30

Limit Washer*

ASTM A-276 Type 304

31

Identification Plate**

Aluminium

*Limit washer is only used at orifices “D” and “E” **Not shown

8 29

10

7 3 4 5

6

20 27

22 1 2

17

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17

WALWORTH STEEL SAFETY AND RELIEF VALVES FUELLADA TYPE 1900-30 SERIES

Dimensions and weights Orifice

D

E

F

G

H

J

K

L

M

N

P

Q

R

T

18

Type

Size

1905-30D 1906-30D 1910-30D 1912-30D 1905-30E 1906-30E 1910-30E 1912-30E 1905-30F 1906-30F 1910-30F 1912-30F 1905-30G 1906-30G 1910-30G 1912-30G 1905-30H 1906-30H 1910-30H 1912-30H 1905-30J 1906-30J 1910-30J 1912-30J 1905-30K 1906-30K 1910-30K 1912-30K 1905-30L 1906-30L 1910-30L 1912-30L 1905-30M 1906-30M 1910-30M 1912-30M 1905-30N 1906-30N 1910-30N 1912-30N 1905-30P 1906-30P 1910-30P 1912-30P 1905-30Q 1906-30Q 1910-30Q 1912-30Q 1905-30R 1906-30R 1910-30R 1912-30R 1905-30T 1906-30T 1910-30-1T 1910-30-2T

1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1 1/2 X 2 1 1/2 X 2 1 1/2 X 2 1 1/2 X 2 1 1/2 X 3 1 1/2 X 3 1 1/2 X 3 1 1/2 X 3 1 1/2 X 3 1 1/2 X 3 2X3 2X3 2X3 2X3 3X4 3X4 3X4 3X4 3X4 3X4 3X4 3X4 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 6 X8 6 X8 6 X8 6 X8 6 X8 6 X8 6 X 10 6 X 10 8 X 10 8 X 10 8 X 10 8 X 10

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inch

4 1/8 4 1/8 4 1/8 4 1/8 4 1/8 4 1/8 4 1/8 4 1/8 4 7/8 4 7/8 4 7/8 4 7/8 4 7/8 4 7/8 4 7/8 4 7/8 5 1/8 5 1/8 5 1/8 6 1/16 5 3/8 5 3/8 7 1/4 7 1/4 6 1/8 6 1/8 6 1/8 7 1/4 6 1/8 6 1/8 7 1/16 7 1/16 7 7 7 7 7 3/4 7 3/4 7 3/4 7 3/4 7 1/8 7 1/8 8 7/8 8 7/8 9 7/16 9 7/16 9 7/16 9 7/16 9 7/16 9 7/16 9 7/16 9 7/16 10 7/8 10 7/8 10 7/8 10 7/8

A

mm

104.8 104.8 104.8 104.8 104.8 104.8 104.8 104.8 123.8 123.8 123.8 123.8 123.8 123.8 123.8 123.8 130.2 130.2 130.2 154.0 136.5 136.5 184.2 184.2 155.6 155.6 155.6 184.2 155.6 155.6 179.4 179.4 177.8 177.8 177.8 177.8 196.9 196.9 196.9 196.9 181.0 181.0 225.4 225.4 239.7 239.7 239.7 239.7 239.7 239.7 239.7 239.7 276.2 276.2 276.2 276.2

inch

4 1/2 4 1/2 4 1/2 4 1/2 4 1/2 4 1/2 4 1/2 4 1/2 4 3/4 4 3/4 6 6 4 3/4 4 3/4 6 6 4 7/8 4 7/8 4 7/8 6 3/8 4 7/8 4 7/8 7 1/8 7 1/8 6 3/8 6 3/8 6 3/8 7 1/8 6 1/2 6 1/2 7 1/8 8 7 1/4 7 1/4 7 1/4 8 8 1/4 8 1/4 8 1/4 8 3/4 9 9 10 10 9 1/2 9 1/2 9 1/2 9 1/2 9 1/2 9 1/2 10 1/2 10 1/2 11 11 11 11

B

mm

114.3 114.3 114.3 114.3 114.3 114.3 114.3 114.3 120.7 120.7 152.4 152.4 120.7 120.7 152.4 152.4 123.8 123.8 123.8 161.9 123.8 123.8 181.0 181.0 161.9 161.9 161.9 181.0 165.1 165.1 181.0 203.2 184.2 184.2 184.2 203.2 209.6 209.6 209.6 222.3 228.6 228.6 254.0 254.0 241.3 241.3 241.3 241.3 241.3 241.3 266.7 266.7 279.4 279.4 279.4 279.4

inch

18 18 18 1/2 18 1/2 18 18 18 1/2 18 1/2 18 3/4 18 3/4 19 1/4 20 19 19 19 1/2 20 1/4 19 1/2 19 1/2 20 1/4 23 21 1/4 21 1/4 23 3/4 28 3/4 24 1/2 24 1/2 28 29 1/4 28 3/4 28 3/4 32 32 29 3/4 29 3/4 32 36 1/4 33 33 34 1/4 39 34 1/4 34 1/4 41 43 1/2 41 41 43 1/4 46 43 43 45 1/2 47 1/2 47 1/2 47 1/2 50 1/4 53 3/8

C

mm

457.2 457.2 469.9 469.9 457.2 457.2 469.9 469.9 476.3 476.3 489.0 508.0 482.6 482.6 495.3 514.4 495.3 495.3 514.4 584.2 539.8 539.8 603.3 730.3 622.3 622.3 711.2 743.0 730.3 730.3 812.8 812.8 755.7 755.7 812.8 920.8 838.2 838.2 870.0 990.6 870.0 870.0 1041.4 1104.9 1041.4 1041.4 1098.6 1168.4 1092.2 1092.2 1155.7 1206.5 1206.5 1206.5 1276.4 1355.7

inch

5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 6 1/8 5 5/16 5 5/16 5 5/16 6 1/8 6 1/8 6 1/8 6 1/8 6 7/8 6 11/16 6 11/16 7 1/4 9 7 1/4 7 1/4 7 3/4 7 3/4 8 7/8 8 7/8 9 1/2 9 1/2 9 3/8 9 3/8 9 3/8 10 3/4 10 1/8 10 1/8 10 1/2 11 3/4 11 11 11 1/2 13 7/8 13 5/8 13 5/8 14 14 1/4 14 1/2 14 1/2 14 1/2 15 1/8 16 1/2 16 1/2 16 1/2 16 1/2

D

mm

134.9 134.9 134.9 134.9 134.9 134.9 134.9 134.9 134.9 134.9 134.9 155.6 134.9 134.9 134.9 155.6 155.6 155.6 155.6 174.6 169.9 169.9 184.2 228.6 184.2 184.2 196.9 196.9 225.4 225.4 241.3 241.3 238.1 238.1 238.1 273.1 257.2 257.2 266.7 298.5 279.4 279.4 292.1 352.4 346.1 346.1 355.6 362.0 368.3 368.3 368.3 384.2 419.1 419.1 419.1 419.1

inch

1 1/8 1 3/8 1 3/8 1 3/8 1 1/8 1 3/8 1 3/8 1 3/8 1 1/4 1 1/2 1 9/16 1 9/16 1 1/4 1 1/2 1 9/16 1 9/16 1 1/4 1 9/16 1 11/16 1 11/16 1 5/16 1 9/16 1 13/16 1 13/16 1 7/16 1 13/16 1 15/16 1 15/16 1 7/16 1 13/16 1 15/16 2 3/16 1 5/8 1 15/16 1 15/16 2 3/16 1 5/8 1 15/16 1 15/16 2 3/16 1 5/8 1 15/16 1 15/16 2 3/16 1 13/16 2 1/4 2 1/4 2 11/16 1 13/16 2 1/4 2 1/4 2 11/16 1 15/16 2 7/16 2 7/16 2 7/16

S

mm

28.6 34.9 34.9 34.9 28.6 34.9 34.9 34.9 31.8 38.1 39.7 39.7 31.8 38.1 39.7 39.7 31.8 39.7 42.9 42.9 33.3 39.7 46.0 46.0 36.5 46.0 49.2 49.2 36.5 46.0 49.2 55.6 41.3 49.2 49.2 55.6 41.3 49.2 49.2 55.6 41.3 49.2 49.2 55.6 46.0 57.2 57.2 68.3 46.0 57.2 57.2 68.3 49.2 61.9 61.9 61.9

Weight

Pounds 40.0 40.0 50.0 50.0 40.0 40.0 50.0 50.0 45.0 45.0 50.0 60.0 55.0 55.0 60.0 65.0 60.0 60.0 65.0 85.0 75.0 75.0 100.0 170.0 110.0 115.0 140.0 150.0 140.0 145.0 220.0 230.0 185.0 190.0 230.0 300.0 220.0 225.0 260.0 360.0 260.0 270.0 350.0 530.0 430.0 445.0 530.0 645.0 495.0 510.0 550.0 675.0 620.0 640.0 675.0 840.0

Kg

18.1 18.1 22.7 22.7 18.1 18.1 22.7 22.7 20.4 20.4 22.7 27.2 24.9 24.9 27.2 29.5 27.2 27.2 29.5 38.6 34.0 34.0 45.4 77.1 49.9 52.2 63.5 68.0 63.5 65.8 99.8 104.3 83.9 86.2 104.3 136.1 99.6 102.1 117.9 163.3 117.9 122.5 158.8 240.4 195.0 201.9 240.4 292.6 224.5 231.3 249.5 306.2 281.2 290.3 306.2 381.0

WALWORTH STEEL SAFETY AND RELIEF VALVES FUELLADA TYPE 1900-30 SERIES Dimensions and weights

D

C

A

S B

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19

WALWORTH STEEL SAFETY AND RELIEF VALVES ASIENTO SUAVE TYPE 1900/XDA SERIES

Las válvulas de seguridad y alivio acero tipo diseño asiento suave (resilente) pueden ser tipo convencional o fuellada y su metodología de selección y dimensiones dependerá del tipo seleccionado. Este diseño mantiene un sello máximo por periodos prolongados, su operación es cercana a la presión de calibración y su sello es hermético totalmente.

Design characteristics • • • • • •

Relief capacity according to ASME SECC. VIII DIV 1 Orifice area according to ASME SECC. VIII DIV 1 Distance between faces according to a API 526 Flange dimensions according to ASME B16.5 NACE Service according to MR-01-75 o MR-01-03 Tests according to API527

Walworht Steel Safety and relief valves can be built with a standard cap (screwed), flanged cap, plain lever or packed lever. 2 The needle head is attached to the disc holder by a pressure retainer and a housing at the disc holder. This ensemble is very secure and hard to break. 1

3 4

5

6

7

8

O´ring, el sello suave o resilente permite cero fugas Adjusting ring, it is the element to adjust the blow down or differential pressure, by raising it the blow down increases (closure pressure decreases) and by handing down the blow down decreases (closure pressure increases). The ideal blow down is the one that makes the valve close at the operation pressure of the accessory at which the valve is installed. Nozzle, the orifice at the superior area of the nozzle is the one that defines the valve capacity, the inlet machining of this element is designed according to the ASME specifications. Eductor tube, it connects the valve Bonnet to the outlet in order to avoid the accumulation of pressure at the bonnet and assure a proper operation of the valve. Spring, WALWORTH offers springs in different type of materials to meet your process necessities, the standard spring is made out of carbon Steel, for high temperature service in Alloy Steel with a high content of Tungsten and for low temperatures Austenitic Stainless Steel. Adjusting screw, it is the adjusting element that compress the spring until a certain position to define the calibration pressure of the valve, WALWORTH personnel pays a lot of a attention to this element.

Fijación de la Capacidad Máxima

1

Cap

2

O´ring

3

Disc Holder

4

Adjusting Ring

5

Nozzle

Adjusting Screw

8

Spring

7

Eductor Tube

6

Las Válvulas de Seguridad y Alivio tienen en su diseño un orificio secundario fijo y un anillo que puede ser ajustado para reducir las fuerzas que levantan el disco del sello y así obtener el levantamiento total que dará la capacidad de flujo requerida en tiempo más corto. La máxima capacidad de relevo es obtenida en cualquier posición normal del anillo de ajuste. Esto se logra gracias al diseño del portadisco, que junto con el anillo de ajuste forman una cámara acumuladora de presión y por supuesto al orifico secundario que direcciona el flujo de la corriente 180°.

20

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WALWORTH STEEL SAFETY AND RELIEF VALVES ASIENTO SUAVE TYPE 1900/XDA SERIES

Design Features

• Orifice from “D” to “T” • Inlet size x outlet size from 1”x 2” to 8”x 10” Flanged ends • Class 150x150 to 600x150 • Closed Bonnet • Full Nozzle • Screwed cap • Actuated by Carbon Steel Spring -20°F (-28.9°C) a 450°F • (232.2°C), High Tungsten content alloy Steel 451°F (232.8°C) a 800°F • (426.7°C) Stainless Steel Spring -21°F (-29.4°C) a -450°F • (-267.7°C) • Minimum calibration pressure 5 PSI (0.35 kg/cm2)

18

Regular Bill of Materials

11

No.

Description Body

ASTM A-216 Grade WCB

2

Nozzle

ASTM A-276 Type 316/ A351 Gr CF8M

3

Disc

ASTM A-276 Type 316/ A351 Gr CF8M

4

Disc Retainer

ASTM A-313 Type 316

5

Adjusting Ring

ASTM A-276 Type 304/ A351 Gr CF8

6

Adjusting Ring Pin

ASTM A-276 Type 304

7

Disc Holder

ASTM A-276 Type 304/ A351 Gr CF8

8

Guide

ASTM A-276 Type 304/ A351 Gr CF8

9

Needle Head

ASTM A-276 Type 410

10

Needle Retainer

ASTM A-313 Type 316

1

Trim WCB S1

11

Bonnet

ASTM A-216 Grade WCB

12

Stud

ASTM A-193 Grade B7

13 15

Nut Carbon Steel Spring Tungsten Steel Adjusting Screw

ASTM A-194 Grade 2H ASTM A-228, A-229 ASTM A-681 Type H21 H26 ASTM A-276 Type 410

16

Tuerca Tornillo Compresión

ASTM A-276 Type 410

17

Eductor Tube

ASTM A-269 Type 304

18

Cap

ASTM A-108 Gr. 1018/ ASTM A-216 Grade WCB

19

Bonnet Gasket

ASTM A-635 Grade 1010

20

Guide Gasket

ASTM A-635 Grade 1010

21

Cap Gasket

ASTM A-635 Grade 1010

22

Junta Perno Anillo de Ajuste

ASTM A-635 Grade 1010

23

Stem

ASTM A-276 Type 410

24

Needle Head Pin

ASTM A-276 Type 410

25

Adjusting Ring Pin Head

ASTM A-276 Type 304

26

Nut

ASTM A-108 Gr. 1018

27

Plug

Commercial

28

Spring Washer

ASTM A-108 Gr. 1018

29

Limit Washer*

ASTM A-276 Type 304

30

Identification Plate**

Aluminium

14

16 21 15 23

13 12

24 14 28 9 19 8 29

10

7 3

25

4

26

5

6

20 27

22 1 2

17

*Limit washer is only used at orifices “D” and “E” **Not shown

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21

WALWORTH STEEL SAFETY AND RELIEF VALVES BONETE ABIERTO TYPE 1900/P3 SERIES 

Las válvulas de seguridad y alivio acero tipo bonete abierto brindan un alto grado de hermeticidad en los asientos, ideal para servicios de vapor de agua y fluidos orgánicos vaporizados en generadores ya que su bonete abierto mantiene el resorte a una temperatura adecuada para su funcionamiento.

Design characteristics • • • • • •

Relief capacity according to ASME SECC. VIII DIV 1 Orifice area according to ASME SECC. VIII DIV 1 Distance between faces according to a API 526 Flange dimensions according to ASME B16.5 NACE Service according to MR-01-75 o MR-01-03 Tests according to API527

1 2

3

4

5

Palanca plana, permite accionar la válvula de manera manual. The needle head is attached to the disc holder by a pressure retainer and a housing at the disc holder. This ensemble is very secure and hard to break. The disc housing at the disc holder has a similar design to the one of a rod, so at difficult service conditions or a misalignment the disc may adjust by its self and keep and hermetic seal. Adjusting ring, it is the element to adjust the blow down or differential pressure, by raising it the blow down increases (closure pressure decreases) and by handing down the blow down decreases (closure pressure increases). The ideal blow down is the one that makes the valve close at the operation pressure of the accessory at which the valve is installed. Nozzle, the orifice at the superior area of the nozzle is the one that defines the valve capacity, the inlet machining of this element is designed according to the ASME specifications.

Bonete abierto, evita la exposición del resorte a altas temperaturas mejorando su desempeño. 7 Spring, WALWORTH offers springs in different type of materials to meet your process necessities, the standard spring is made out of carbon Steel, for high temperature service in Alloy Steel with a high content of Tungsten and for low temperatures Austenitic Stainless Steel. 8 Adjusting screw, it is the adjusting element that compress the spring until a certain position to define the calibration pressure of the valve, WALWORTH personnel pays a lot of a attention to this element. 6

Fijación de la Capacidad Máxima

1

Palanca plana

Adjusting Screw

2

Needle Head

Spring Bonete abierto

3

Disc Holder

4

Adjusting Ring

5

Nozzle

8

7

6

Las Válvulas de seguridad y Alivio tienen en su diseño un orificio secundario fijo y un anillo que puede ser ajustado para reducir las fuerzas que levantan el disco del sello y así obtener el levantamiento total que dará la capacidad de flujo requerida en tiempo más corto. La máxima capacidad de relevo es obtenida en cualquier posición normal del anillo de ajuste. Esto se logra gracias al diseño del portadisco, que junto con el anillo de ajuste forman una cámara acumuladora de presión y por supuesto al orifico secundario que direcciona el flujo de la corriente 180°.

22

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WALWORTH STEEL SAFETY AND RELIEF VALVES BONETE ABIERTO TYPE 1900/P3 SERIES

Design Features • • • • • • • • • • •

Orifice from “D” to “T” Inlet size x outlet size from 1”x 2” to 8”x 10” Flanged ends Class 150x150 to 600x150 Open Bonnet Full Nozzle Screwed cap Actuated by Carbon Steel Spring -20°F (-28.9°C) a 450°F (232.2°C), High Tungsten content alloy Steel 451°F (232.8°C) a 800°F (426.7°C) Stainless Steel Spring -21°F (-29.4°C) a -450°F (-267.7°C) Minimum calibration pressure 5 PSI (0.35 kg/cm2)

17 28 27 26

22 16

Regular Bill of Materials

15

No.

Description Body

ASTM A-216 Grade WCB

2

Nozzle

ASTM A-276 Type 316/ A351 Gr CF8M

3

Disc

ASTM A-276 Type 316/ A351 Gr CF8M

4

Disc Retainer

ASTM A-313 Type 316

5

Adjusting Ring

ASTM A-276 Type 304/ A351 Gr CF8

6

Adjusting Ring Pin

ASTM A-276 Type 304

7

Disc Holder

ASTM A-276 Type 304/ A351 Gr CF8

8

Guide

ASTM A-276 Type 304/ A351 Gr CF8

1

9

Needle Head

ASTM A-276 Type 410

10

Needle Retainer

ASTM A-313 Type 316 ASTM A-216 Grade WCB

11

Bonnet

12

Stud

ASTM A-193 Grade B7

13 15

Nut Carbon Steel Spring Tungsten Steel Adjusting Screw

ASTM A-194 Grade 2H ASTM A-228, A-229 ASTM A-681 Type H21 H26 ASTM A-276 Type 410

16

Tuerca Tornillo Compresión

ASTM A-276 Type 410

17

Eductor Tube

ASTM A-269 Type 304

18

Cap

ASTM A-108 Gr. 1018/ ASTM A-216 Grade WCB

19

Bonnet Gasket

ASTM A-635 Grade 1010

20

Guide Gasket

ASTM A-635 Grade 1010

21

Cap Gasket

ASTM A-635 Grade 1010

22

Junta Perno Anillo de Ajuste

ASTM A-635 Grade 1010

23

Stem

ASTM A-276 Type 410

24

Needle Head Pin

ASTM A-276 Type 410

25

Adjusting Ring Pin Head

ASTM A-276 Type 304

26

Nut

ASTM A-108 Gr. 1018

14

20

Trim WCB S1

27

Plug

Commercial

28

Spring Washer

ASTM A-108 Gr. 1018

29

Limit Washer*

ASTM A-276 Type 304

30

Identification Plate**

Aluminium

11 13 12 23

30 14

10

9 18 8

4 24

19

25

7 31

6

3 5

29 21 1 2

*Limit washer is only used at orifices “D” and “E” **Not shown

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23

WALWORTH STEEL SAFETY AND RELIEF VALVES BONETE ABIERTO TYPE 1900/P3 SERIES 

Dimensions and weights Orifice

D

E

F

G

H

J

K

L

M

N

P

Q

R

T

24

Type

Size

1905D/P3/P3 1906D/P3/P3 1910D/P3 1912D/P3 1905E/P3 1906E/P3 1910E/P3 1912E/P3 1905F/P3 1906F/P3 1910F/P3 1912F/P3 1905G/P3 1906G/P3 1910G/P3 1912G/P3 1905H/P3 1906H/P3 1910H/P3 1912H/P3 1905J/P3 1906J/P3 1910J/P3 1912J/P3 1905K/P3 1906K/P3 1910K/P3 1912K/P3 1905L/P3 1906L/P3 1910L/P3 1912L/P3 1905M/P3 1906M/P3 1910M/P3 1912M/P3 1905N/P3 1906N/P3 1910N/P3 1912N/P3 1905P/P3 1906P/P3 1910P/P3 1912P/P3 1905Q/P3 1906Q/P3 1910Q/P3 1912Q/P3 1905R/P3 1906R/P3 1910R/P3 1912R/P3 1905T/P3 1906T/P3 1910-1T/P3 1910-2T/P3

1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1 1/2 X 2 1 1/2 X 2 1 1/2 X 2 1 1/2 X 2 1 1/2 X 3 1 1/2 X 3 1 1/2 X 3 1 1/2 X 3 1 1/2 X 3 1 1/2 X 3 2X3 2X3 2X3 2X3 3X4 3X4 3X4 3X4 3X4 3X4 3X4 3X4 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 6 X8 6 X8 6 X8 6 X8 6 X8 6 X8 6 X 10 6 X 10 8 X 10 8 X 10 8 X 10 8 X 10

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inch

4 1/8 4 1/8 4 1/8 4 1/8 4 1/8 4 1/8 4 1/8 4 1/8 4 7/8 4 7/8 4 7/8 4 7/8 4 7/8 4 7/8 4 7/8 4 7/8 5 1/8 5 1/8 5 1/8 6 1/16 5 3/8 5 3/8 7 1/4 7 1/4 6 1/8 6 1/8 6 1/8 7 1/4 6 1/8 6 1/8 7 1/16 7 1/16 7 7 7 7 7 3/4 7 3/4 7 3/4 7 3/4 7 1/8 7 1/8 8 7/8 8 7/8 9 7/16 9 7/16 9 7/16 9 7/16 9 7/16 9 7/16 9 7/16 9 7/16 10 7/8 10 7/8 10 7/8 10 7/8

A

mm

104.8 104.8 104.8 104.8 104.8 104.8 104.8 104.8 123.8 123.8 123.8 123.8 123.8 123.8 123.8 123.8 130.2 130.2 130.2 154.0 136.5 136.5 184.2 184.2 155.6 155.6 155.6 184.2 155.6 155.6 179.4 179.4 177.8 177.8 177.8 177.8 196.9 196.9 196.9 196.9 181.0 181.0 225.4 225.4 239.7 239.7 239.7 239.7 239.7 239.7 239.7 239.7 276.2 276.2 276.2 276.2

inch

4 1/2 4 1/2 4 1/2 4 1/2 4 1/2 4 1/2 4 1/2 4 1/2 4 3/4 4 3/4 6 6 4 3/4 4 3/4 6 6 4 7/8 4 7/8 4 7/8 6 3/8 4 7/8 4 7/8 7 1/8 7 1/8 6 3/8 6 3/8 6 3/8 7 1/8 6 1/2 6 1/2 7 1/8 8 7 1/4 7 1/4 7 1/4 8 8 1/4 8 1/4 8 1/4 8 3/4 9 9 10 10 9 1/2 9 1/2 9 1/2 9 1/2 9 1/2 9 1/2 10 1/2 10 1/2 11 11 11 11

B

mm

114.3 114.3 114.3 114.3 114.3 114.3 114.3 114.3 120.7 120.7 152.4 152.4 120.7 120.7 152.4 152.4 123.8 123.8 123.8 161.9 123.8 123.8 181.0 181.0 161.9 161.9 161.9 181.0 165.1 165.1 181.0 203.2 184.2 184.2 184.2 203.2 209.6 209.6 209.6 222.3 228.6 228.6 254.0 254.0 241.3 241.3 241.3 241.3 241.3 241.3 266.7 266.7 279.4 279.4 279.4 279.4

inch

18 1/4 18 1/4 18 1/4 19 18 1/4 18 1/4 18 1/4 19 19 19 19 19 19 19 19 19 22 1/16 22 1/16 22 1/16 23 28 28 29 28 3/4 28 1/8 28 1/8 28 1/8 29 1/4 31 1/16 31 1/16 32 32 36 1/4 36 1/4 36 1/4 36 1/4 39 39 39 39 41 3/4 41 3/4 41 3/4 41 3/4 46 46 46 46 47 1/2 47 1/2 47 1/2 47 1/2 50 1/4 50 1/4 50 1/4 50 1/4

C

mm

463.3 463.3 463.3 482.6 463.3 463.3 463.3 482.6 482.6 482.6 482.6 482.6 482.6 482.6 482.6 482.6 560.4 560.4 560.4 584.2 711.2 711.2 736.6 730.3 714.4 714.4 714.4 743.0 798.0 798.0 812.8 812.8 920.8 920.8 920.8 920.8 990.6 990.6 990.6 990.6 1060.5 1060.5 1060.5 1060.5 1168.4 1168.4 1168.4 1168.4 1206.5 1206.5 1206.5 1206.5 1276.4 1276.4 1276.4 1276.4

inch

5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 5 5/16 6 1/8 5 5/16 5 5/16 5 5/16 6 1/8 6 1/8 6 1/8 6 1/8 6 7/8 6 11/16 6 11/16 7 1/4 9 7 1/4 7 1/4 7 3/4 7 3/4 8 7/8 8 7/8 9 1/2 9 1/2 9 3/8 9 3/8 9 3/8 10 3/4 10 1/8 10 1/8 10 1/2 11 3/4 11 11 11 1/2 13 7/8 13 5/8 13 5/8 14 14 1/4 14 1/2 14 1/2 14 1/2 15 1/8 16 1/2 16 1/2 16 1/2 16 1/2

D

mm

134.9 134.9 134.9 134.9 134.9 134.9 134.9 134.9 134.9 134.9 134.9 155.6 134.9 134.9 134.9 155.6 155.6 155.6 155.6 174.6 169.9 169.9 184.2 228.6 184.2 184.2 196.9 196.9 225.4 225.4 241.3 241.3 238.1 238.1 238.1 273.1 257.2 257.2 266.7 298.5 279.4 279.4 292.1 352.4 346.1 346.1 355.6 362.0 368.3 368.3 368.3 384.2 419.1 419.1 419.1 419.1

inch

1 1/8 1 3/8 1 3/8 1 3/8 1 1/8 1 3/8 1 3/8 1 3/8 1 1/4 1 1/2 1 9/16 1 9/16 1 1/4 1 1/2 1 9/16 1 9/16 1 1/4 1 9/16 1 11/16 1 11/16 1 5/16 1 9/16 1 13/16 1 13/16 1 7/16 1 13/16 1 15/16 1 15/16 1 7/16 1 13/16 1 15/16 2 3/16 1 5/8 1 15/16 1 15/16 2 3/16 1 5/8 1 15/16 1 15/16 2 3/16 1 5/8 1 15/16 1 15/16 2 3/16 1 13/16 2 1/4 2 1/4 2 11/16 1 13/16 2 1/4 2 1/4 2 11/16 1 15/16 2 7/16 2 7/16 2 7/16

S

mm

28.6 34.9 34.9 34.9 28.6 34.9 34.9 34.9 31.8 38.1 39.7 39.7 31.8 38.1 39.7 39.7 31.8 39.7 42.9 42.9 33.3 39.7 46.0 46.0 36.5 46.0 49.2 49.2 36.5 46.0 49.2 55.6 41.3 49.2 49.2 55.6 41.3 49.2 49.2 55.6 41.3 49.2 49.2 55.6 46.0 57.2 57.2 68.3 46.0 57.2 57.2 68.3 49.2 61.9 61.9 61.9

Weight

Pounds 45.0 45.0 50.0 60.0 45.0 45.0 50.0 60.0 45.0 45.0 50.0 60.0 55.0 55.0 60.0 65.0 60.0 60.0 65.0 85.0 75.0 75.0 100.0 170.0 110.0 115.0 140.0 150.0 140.0 145.0 220.0 230.0 185.0 190.0 230.0 300.0 220.0 225.0 260.0 360.0 260.0 270.0 350.0 530.0 430.0 445.0 530.0 645.0 495.0 510.0 550.0 645.0 620.0 640.0 675.0 690.0

Kg

20.4 20.4 22.7 27.2 20.4 20.4 22.7 27.2 20.4 20.4 22.7 27.2 24.9 24.9 27.2 29.5 27.2 27.2 29.5 38.6 34.0 34.0 45.4 77.1 49.9 52.2 63.5 68.0 63.5 65.8 99.8 104.3 83.9 86.2 104.3 136.1 99.6 102.1 117.9 163.3 117.9 122.5 158.8 240.4 195.0 201.9 240.4 292.6 224.5 231.3 249.5 292.6 281.2 290.3 306.2 313.0

WALWORTH STEEL SAFETY AND RELIEF VALVES BONETE ABIERTO TYPE 1900/P3 SERIES Dimensions and weights

D

C

A

S B

www.walworthvalves.com

25

VÁLVULAS DE SEGURIDAD Y ALIVIO DE ACERO WALWORTH TIPO PORTATIL SERIE 1970

Las válvulas de seguridad y alivio acero tipo portátil serie 1970 ofrecen una solución económica, sin embargo este modelo está limitado a una área de descarga de 0.522 pulg2 (336.8 mm2) y una presión máxima de trabajo de 5000 psi (351 Kg/cm3). La conexión estándar de esta válvula es rosca NPT entrada y salida hembra, sin embargo puede ser surtida en cualquier combinación incluyendo extremos soldables y bridados.

Características de Diseño • • • • • •

Capacidad de descarga de acuerdo a ASME SECC. VIII DIV 1 Área de orifico de acuerdo a ASME SECC. VIII DIV 1 Distancia entre caras de acuerdo a API 526 Dimensiones de bridas de acuerdo a ASME B16.5 Servicio NACE de acuerdo a MR-01-75 o MR-01-03 Pruebas de acuerdo a API527

1 2

3

Las Válvulas de Seguridad y Alivio pueden ser suministradas con casquillo estándar, con palanca plana o palanca empacada.

1

Casquillo

2

Cabeza de aguja

3

Portadisco

4

Guia

5

Base

Tornillo de compresión

7

Resorte

6

Cabeza de aguja, la unión del disco y la cabeza de la aguja tiene un diseño semejante al de una biela; para que en condiciones desfavorables o en algún des alineamiento causado por situaciones externas, este sea capaz de auto ajustarse y mantener la hermeticidad del asiento.

Portadisco, este elemento mantiene alineado el disco al área de sello de la base, el ensamble del portadisco y reten del disco es a través de un seguro TRUARC y una ranura en el portadisco, este ensamble es muy seguro y difícil de separar.

Guia, por medio de este elemento se puede ajustar el blowdown o presión diferencial, al elevarlo el blowdown aumenta (la presión de cierre disminuye) cuando desciende el blowdown disminuye (la presión de cierre aumenta). Lo ideal es fijar el blowdown para que la válvula cierre a la presión de operación del dispositivo en la cual está instalada. 5 Base (para las portátiles). El orificio en la parte superior de la tobera es el elemento que define la capacidad de desalojo de la válvula, el maquinado interno de esta válvula está diseñado para cumplir con el área requerida por ASME. 6 Resorte. WALWORTH ofrece resortes en diferentes tipos de materiales para cumplir las necesidades de su proceso, el resorte estándar esta hecho en Acero al Carbón, para servicio en altas temperaturas en Acero con alto contenido de Tungsteno y para bajas temperaturas en Acero Inoxidable Austenítico. 7 El tornillo de compresión o ajuste es el elemento que comprime al resorte la posición de esta determinara la presión de calibración en la válvula, es por esto que el personal WALWORTH pone especial atención en el ajuste de este elemento. 4

26

www.walworthvalves.com

VÁLVULAS DE SEGURIDAD Y ALIVIO DE ACERO WALWORTH TIPO PORTATIL SERIE 1970 Características de Diseño • • • • • •

Orificios: 0.126 pulg2, 0.226 pulg2 y 0.522 pulg2 Diámetro de entrada y salida desde ¾”x1” hasta 2”x2” Presión máxima de trabajo 5000 PSI Bonete cerrado Casquillo roscado Accionada por: Resorte Ac. carbón -20°F (-28.9°C) a 450°F (232.2°C), resorte Ac. tungsteno 451°F (232.8°C) a 800°F (426.7°C) y resorte Ac. inoxidable -21°F (-29.4°C) a -450°F (-267.7°C). • Presión mínima de calibración 5PSI (0.35 Kg/cm2)

12 10 9 13

Lista de Materiales No

Descripción

1

Trim WCB S1

Base

ASTM A-276 Type 304

2

Disco

ASTM A-276 Type 316

3 4

Retén del disco

ASTM A-276 Type 304

Portadisco

ASTM A-276 Type 304

5

Guía

ASTM A-276 Type 416

6

Perno guía

ASTM A-276 Type 304

7

Bonete

ASTM A-216 Grade WCB

8

Vástago

ASTM A-276 Type 416

9

Tornillo compresión

ASTM A-276 Type 416

10

Tuerca tornillo compresión Resorte ac. Carbón Resorte ac. Tungsteno

ASTM A-276 Type 416 ASTM A-228, A-229 ASTM A-681 Type H21 H26

12

Casquillo

ASTM A-108 Gr. 1018

13

Junta casquillo

ASTM A-635 Grade 1010

14

Junta perno guía

ASTM A-635 Grade 1010

15

Junta bonete

ASTM A-635 Grade 1010

11

16

Retén truarc

Commercial

17

Roldana resorte

ASTM A-108 Gr. 1018

18

Placa identificación*

Aluminium

*No mostrado

7

6

14

8 15 11 17 3

16

4

2

5

1

www.walworthvalves.com www.walworthvalves.com

27

VÁLVULAS DE SEGURIDAD Y ALIVIO DE ACERO WALWORTH TIPO PORTÁTIL SERIE 1970

Válvula tipo 1970 Conexiones Roscadas (S) Tamaño

Modelo

pulg

3/4 X 1

A

3 1/8

1 X 1 1/2

3 1/8

79.4

4 1/8

2X2

3 1/8

104.8

mm

pulg

79.4

13

79.4

3 1/8

104.8

4 1/8

B

pulg

79.4

3 1/8

1970c 1970t

1 1/2 X 2

mm

79.4

3 1/8

79.4

C

mm

pulg

330.2

3 1/2

13

330.2

13

330.2

13

330.2

D

3 1/2

Peso aproximado Lbs Kg

mm 88.9

20.0

88.9

4 1/8

104.8

4 1/8

9.1

20.0

9.1

22.0

104.8

10.0

22.0

10.0

Válvula tipo 1970 Extremos Caja Soldable (SW) Tamaño Modelo 3/4 X 1

1 X 1 1/2

1 1/2 X 2

1970c 1970t

2X2

pulg

A

mm

pulg

4 1/2

114.3

3 1/8

4 5/8

117.5

3 1/8

4 1/2

5 3/8

114.3

136.5

3 1/8

3 1/8

B

mm

pulg

C

mm

79.4

14 3/8

365.1

79.4

14 1/2

368.3

79.4

79.4

14 3/8

15 1/4

pulg

J

1 1/3

365.1

1 43/47

387.4

2 13/32

2 13/32

mm

pulg

48.6

5/8

33.8

K

5/8

61.1

5/8

61.1

5/8

mm

pulg

L

15.9

1 4/57

15.9

1 43/47

15.9

15.9

1 1/3

2 13/32

mm

pulg

33.9

5/8

27.2

48.6

61.1

M

1/2

5/8

5/8

mm

Peso aprox. Lbs Kg

15.9

20.0

12.7

15.9

15.9

20.0

9.1

22.0

10.0

9.1

22.0

10.0

Válvula tipo 1970 Conexiones Bridadas Entrada RF o rtj Tamaño Modelo ansi Std excepto espesor

3/4 X 1

1970c 1970t

1X1 1/2

1975c 1975t

1 1/2 X2

1975c 1975t

2X2

28

1975c 1975t

3/4-150 3/4-300 3/4-600 3/4-900 3/4-1500 3/4-2500 1-150 1-300 1-600 1-900 1-1500 1-2500 1 1/2-150 1 1/2-300 1 1/2-600 1 1/2-900 1 1/2-1500 1 1/2-2500 2-150 2-300 2-600 2-900 2-1500 2-2500

Salida ansi Std excepto espesor Npt

150 ó 300

A pulg

6 6 1" 6 R.F. 1" Hembra o 6 1/2 R.T.J. 6 1/2 6 1/2 6 1/4 1 1/2" 6 1/4 1 1/2" R.F. 6 1/4 Hembra o 7 1/4 R.T.J. 7 1/4 7 1/4 7 1/8 7 1/8 2" 7 1/8 2" R.F. 8 1/4 Hembra o R.T.J. 8 1/4

B mm

152.4 152.4 152.4 165.1 165.1 165.1 158.8 158.8 158.8 184.2 184.2 184.2 181.0 181.0 181.0 209.6 209.6

8 1/4 209.6 7 1/8 7 1/8 2" 2" R.F. 7 1/8 Hembra o 8 1/4 R.T.J. 8 1/4 8 1/4

www.walworthvalves.com

E rf o rtj

C

Npt Bridada sw pulg pulg pulg (mm) (mm) 15 7/8 15 7/8 3 1/8 6 1/4 15 7/8 o o (79.4) (158.8) 16 3/8 16 3/8 16 3/8 16 1/8 16 1/8 3 1/8 6 1/4 16 1/8 o o (79.4) (158.8) 17 1/8 17 1/8 17 1/8 17 17 17 3 1/8 6 1/4 18 1/8 o o (79.4) (158.8) 18 1/8

mm

pulg

403.2 403.2 403.2 415.9 415.9 415.9 409.6 409.6 409.6 435.0 435.0 435.0 431.8 431.8 431.8 460.4

1 1 1/8 1 1/8 1 5/8 1 5/8 1 7/8 1 1/16 1 3/16 1 3/16 1 3/4 1 3/4 2 1 3/16 1 3/16 1 3/8 1 7/8

mm pulg mm 25.4 28.6 28.6 41.3 41.3 47.6 27.0 30.2 30.2 44.5 44.5 50.8 30.2 30.2 34.9 47.6

460.4 1 7/8 47.6

18 1/8 460.4 2 3/8 60.3

181.0 18 181.0 18 6 1/4 181.0 3 1/8 18 o o 209.6 (79.4) (158.8) 19 1/8 209.6 19 1/8 209.6 19 1/8

457.2 457.2 457.2 485.8 485.8 485.8

1 1/4 1 1/8 1 5/8 2 1/8 2 1/8 2 5/8

F rf o rtj

31.8 28.6 41.3 54.0 54.0 66.7

H rf o rtj ó 150 300 150 300 pulg pulg pulg (mm) (mm) (mm) G rf o rtj

Peso aproximado Salida roscada

Kg

Lbs

Kg

10.0 10.4 10.7 12.2 12.2 13.2 10.4 10.9 11.1 12.7 12.7 15.0 12.0 13.6 13.6 17.0

25 27 27 1/2 31 31 33 31 32 32 1/2 36 36 41 36 39 1/2 39 1/2 47

11.3 12.2 12.5 14.1 14.1 15.0 14.1 14.5 14.7 16.3 16.3 18.6 16.3 17.9 17.9 21.3

17.0

47

21.3

5/8 15.9

47 1/2 21.5

57

25.9

1/2 5/8 5/8 5/8 5/8 5/8

29 1/2 31 1/2 32 1/2 43 43 51 1/2

1/2 1/2 1/2 5/8 5/8 5/8 1/2 1/2 1/2 5/8 5/8 5/8 1/2 1/2 1/2 5/8

12.7 12.7 12.7 1 1/16 o 15.9 (27) 15.9 15.9 12.7 12.7 12.7 1 1/16 o 15.9 (27) 15.9 15.9 12.7 12.7 12.7 13/8 15.9 o (34.9) 5/8 15.9

Lbs

Salida bridada

22 23 1 3/16 1/2 23 1/2 o o 27 (30.2) (12.7) 27 29 23 24 1 5/16 1/2 24 1/5 o o 28 (33.3) (12.7) 28 33 26 1/2 30 30 1 1/2 3/8 37 1/2 o o (38.1) (9.5) 37 1/2

12.7 15.9 15.9 13/8 1 1/2 o o 15.9 (34.9) (38.1) 15.9 15.9

3/8 o (9.5)

13.4 39 17.7 14.3 41 18.6 14.7 42 19.1 19.5 32 1/2 14.7 19.5 32 1/2 14.7 23.4 61 27.7

VÁLVULAS DE SEGURIDAD Y ALIVIO DE ACERO WALWORTH TIPO PORTÁTIL SERIE 1970 Dimensiones y Pesos D

M

G

J

H

B

Conexiones roscadas (Lateral)

C

B

B

Extremos caja soldable (Lateral)

C

Conexiones bridadas (Lateral)

C

A

A

A K

F

E

L

Conexiones roscadas (Frente)

Extremos caja soldable (Frente)

Conexiones bridadas (Frente) www.walworthvalves.com

29

VÁLVULAS DE SEGURIDAD Y ALIVIO DE ACERO WALWORTH TIPO PORTÁTIL SERIE 1975

Las válvulas de seguridad y alivio acero tipo portátil serie 1975 ofrece una solución económica, sin embargo este modelo está limitado a una área de descarga de 0.110 pulg2 (71 mm2) y una presión máxima de trabajo de 2000 Psi (104.65 Kg/cm3). La conexión estándar de esta válvula es rosca NPT entrada macho y salida hembra, sin embargo puede ser surtida en cualquier combinación incluyendo extremos soldables y bridados.

Características de Diseño • • • • • •

Capacidad de descarga de acuerdo a ASME SECC. VIII DIV 1 Área de orifico de acuerdo a ASME SECC. VIII DIV 1 Distancia entre caras de acuerdo a API 526 Dimensiones de bridas de acuerdo a ASME B16.5 Servicio NACE de acuerdo a MR-01-75 o MR-01-03 Pruebas de acuerdo a API527

1 2

3

1

Casquillo

2

Cabeza de aguja

7

Resorte

6

Las Válvulas de Seguridad y Alivio pueden ser suministradas con casquillo estándar, con palanca plana o palanca empacada.

Cabeza de aguja, la unión del disco y la cabeza de la aguja tiene un diseño semejante al de una biela; para que en condiciones desfavorables o en algún des alineamiento causado por situaciones externas, este sea capaz de auto ajustarse y mantener la hermeticidad del asiento.

Portadisco, este elemento mantiene alineado el disco al área de sello de la base, el ensamble del portadisco y reten del disco es a través de un seguro TRUARC y una ranura en el portadisco, este ensamble es muy seguro y difícil de separar.

Guia, por medio de este elemento se puede ajustar el blowdown o presión diferencial, al elevarlo el blowdown aumenta (la presión de cierre disminuye) cuando desciende el blowdown disminuye (la presión de cierre aumenta). Lo ideal es fijar el blowdown para que la válvula cierre a la presión de operación del dispositivo en la cual está instalada. 5 Base. El orificio en la parte superior de la Base es el elemento que define la capacidad de desalojo de la válvula, el maquinado interno de esta válvula está diseñado para cumplir con el área requerida por ASME. 6 Resorte. WALWORTH ofrece resortes en diferentes tipos de materiales para cumplir las necesidades de su proceso, el resorte estándar esta hecho en Acero al Carbón, para servicio en altas temperaturas en Acero con alto contenido de Tungsteno y para bajas temperaturas en Acero Inoxidable Austenítico. 7 El tornillo de compresión o ajuste es el elemento que comprime al resorte la posición de esta determinara la presión de calibración en la válvula, es por esto que el personal WALWORTH pone especial atención en el ajuste de este elemento. 4

30

Tornillo de compresión

www.walworthvalves.com

3

Portadisco

4

Guia

5

Base

VÁLVULAS DE SEGURIDAD Y ALIVIO DE ACERO WALWORTH TIPO PORTÁTIL SERIE 1975 Características Generales • • • • • •

Orificios: 0.110 pulg2 Diámetro de entrada y salida desde ½” x 1” hasta 1” x 1” Presión máxima de trabajo 2000 PSI Bonete cerrado Casquillo roscado Accionada por: Resorte Ac. carbón -20°F (-28.9°C) a 450°F (232.2°C), resorte Ac. tungsteno 451°F (232.8°C) a 800°F (426.7°C) y resorte Ac. inoxidable -21°F (-29.4°C) a -450°F (-267.7°C). • Presión mínima de calibración 5 PSI (0.35 Kg/cm2)

12 9 13 10

Lista de Materiales No

Descripción

1

Trim WCB S1

Base

ASTM A-276 Type 304

2

Disco

ASTM A-276 Type 316

3 4

Retén del disco

ASTM A-276 Type 304

Portadisco

ASTM A-276 Type 304

5

Guía

ASTM A-276 Type 416

6

Perno guía

ASTM A-276 Type 304

7

Bonete

ASTM A-216 Grade WCB

8

Vástago

ASTM A-276 Type 416

9

Tornillo compresión

ASTM A-276 Type 416

10

Tuerca tornillo compresión Resorte ac. Carbón resorte ac. Tungsteno

ASTM A-276 Type 416 ASTM A-228, A-229 ASTM A-681 Type H21 H26

11 12

Casquillo

ASTM A-108 Gr. 1018

13

Junta casquillo

ASTM A-635 Grade 1010

14

Junta perno guía

ASTM A-635 Grade 1010

15

Junta bonete

ASTM A-635 Grade 1010

6

14

11 17 8

16

3

16

Retén truarc

Commercial

17

Roldana resorte

ASTM A-108 Gr. 1018

4

18

Placa identificación*

Aluminium

2

*No mostrado

7

5

15

1

www.walworthvalves.com

31

VÁLVULAS DE SEGURIDAD Y ALIVIO DE ACERO WALWORTH TIPO PORTÁTIL SERIE 1975

Válvula tipo 1975 Conexiones Roscadas (S) Tamaño

Modelo

1/2 X 1 1 X1

A

3 9/16

1975c 1975t

3/4 X 1

pulg

mm

pulg

90.5

1 3/4

90.5

3 9/16

3 9/16

B

1 3/4

90.5

mm

pulg

44.5

8 1/2

44.5

1 3/4

44.5

C

mm

pulg

215.9

1 7/8

8 1/2

215.9

8 1/2

215.9

D

Peso aproximado Lbs Kg

mm

1 7/8

47.6

47.6

1 7/8

5.0

2.3

5.0

2.3

5.0

47.6

2.3

Válvula tipo 1975 Extremos Caja Soldable (SW) Tamaño Modelo 1/2 X 1 3/4 X 1 1 X1

1975c 1975t

pulg

4 1/4 4 1/4

4 1/4

A

mm

pulg

108

1 3/4

108

108

1 3/4

1 3/4

B

mm

pulg

C

mm

44.5

9 3/16

233.4

1 1/3

44.5

9 3/16

233.4

1 1/3

44.5

9 3/16

233.4

J

pulg

mm

pulg

33.8

5/8

33.8

1 1/3

K

1/2

33.8

5/8

mm

pulg

15.9

1 4/57

12.7

15.9

L

43/50

1 1/3

mm

pulg

27.2

1/2

21.8

33.9

M

1/2

1/2

mm 12.7

Peso aprox. Lbs Kg

12.7

5.0

2.3

5.0

2.3

5.0

12.7

2.3

Válvula tipo 1975 Conexiones Bridadas Salida ansi std A Entrada excepto espesor rf o rtj Tamaño Modelo ansi Std excepto 150 ó pulg mm Npt espesor 300

1/2 X 1

3/4 X 1

1X1

1975c 1975t

1975c 1975t

1975c 1975t

1/2-150 1/2-300 1/2-600 1" 1/2-900 Hembra 1/2-1500

152.4 152.4 152.4 165.1 165.1

1/2-2500

6 1/2 165.1

3/4-150 3/4-300 3/4-600 1“ 3/4-900 Hembra 3/4-1500 3/4-2500

6 1/4 6 1/4 6 1/4 6 3/4 6 3/4 6 3/4

1" R.F. o R.T.J.

6 1/2 165.1

1-300

6 1/2 165.1

1-600 1-900

1“ Hembra

1-2500

www.walworthvalves.com

1" R.F. o R.T.J.

6 1/2 165.1 1 3/4 4 7/8 o o 7 1/2 190.5 (44.5) (123.8) 7 1/2 190.5 7 1/2 190.5

E rf o rtj

C

Npt Bridada sw pulg pulg pulg (mm) (mm) 11 11 1 3/4 4 7/8 11 o o 11 1/2 (44.5) (123.8) 11 1/2

158.8 158.8 158.8 1 3/4 4 7/8 o o 171.5 (44.5) (123.8) 171.5 171.5

1-150

1-1500

32

1" R.F. o R.T.J.

6 6 6 6 1/2 6 1/2

B

mm

F rf o rtj

pulg mm pulg mm

279.4 7/8 279.4 1 279.4 1 292.1 1 1/2 292.1 1 1/2 1 11 1/2 292.1 13/16 11 1/4 28538 1 11 1/4 28538 1 1/8 11 1/4 28538 1 1/8 11 3/4 298.5 1 5/8 11 3/4 298.5 1 5/8 11 3/4 298.5 1 5/8 1 11 1/2 292.1 1/16 1 11 1/2 292.1 3/16 1 11 1/2 292.1 3/16 12 317.5 1 3/4 1/2 12 317.5 1 3/4 1/2 12 317.5 2 1/2

G rf o rtj 150

300

pulg (mm)

pulg (mm)

H rf o rtj 150 ó 300 pulg (mm)

Peso aproximado Salida roscada Lbs

22.2 7/16 11.1 6 1/2 25.4 7/16 11.1 7 1/2 25.4 7/16 11.1 1 1/16 1 3/16 7 1/2 o o o 38.1 5/8 15.9 11 1/2 (27) (30.2) (12.7) 38.1 5/8 15.9 11 1/2 46

5/8 15.9

Kg

Salida bridada Lbs

Kg

2.9 10 1/2 4.8 3.2 11 5.0 3.4 11 1/2 5.2 5.2 15 7.0 5.2 15 7.0

12 1/2 5.7

16

7.5

3.2 3.6 3.9 5.2 5.2 6.1

11 12 12 1/2 15 1/2 15 1/2 17 1/2

5.0 5.4 5.7 7.0 7.0 7.9

8

3.6

12

5.4

9

4.1

13

5.9

25.4 28.6 28.6 41.3 41.3 41.3

1/2 1/2 1/2 5/8 5/8 5/8

12.7 7 12.7 8 1/2 12.7 1 1/16 1 3/16 8 1/2 o o o 15.9 (27) (30.2) (12.7) 11 1/2 15.9 11 1/2 15.9 13 1/2

27.0

1/2 12.7

30.2

1/2 12.7

30.2 44.5

1/2 1/2 12.7 1 1/16 1 3/16 9 1/2 4.3 13 1/2 6.1 o o o 5/8 15.9 (27) (30.2) (12.7) 13 1/2 6.1 17 1/2 7.9

44.5

5/8 15.9

50.8

5/8 15.9

13 1/2 6.1 17 1/2 7.9 21

9.5

25

11.3

VÁLVULAS DE SEGURIDAD Y ALIVIO DE ACERO WALWORTH TIPO PORTÁTIL SERIE 1975 Dimensiones y Pesos D

G M

J

H

B B

B

Conexiones roscadas (Lateral)

C

Extremos caja soldable (Lateral)

Conexiones bridadas (Lateral)

C

C

A A

A

F

K

Conexiones roscadas (Frente)

L

Extremos caja soldable (Frente)

E

Conexiones bridadas (Frente) www.walworthvalves.com

33

VÁLVULAS DE SEGURIDAD Y ALIVIO DE ACERO WALWORTH APLICACIÓN Y SELECCIÓN DE VÁLVULA

A continuación se presenta la metodología para el dimensionamiento de una válvula de seguridad y alivio de acero; contiene: • S elección de un orificio para liberar una predeterminada cantidad de fluido • Selección de una válvula que cumpla los requerimientos de una temperatura y presión específica. El Instituto Americano del Petróleo (API) presenta la siguiente metodología a través del uso de fórmulas.

Símbolos: A

Orificio de la válvula en pulg2

Gcm Capacidad de gas requerida en pies3/min Vph Capacidad de vapor requerido en Lb/hr Lgm Capacidad de líquido requerido en Gpm Gravedad específica de gas (con referencia al aire =1 a 60º F y 14.7 psi) o de líquido S.G. (con referencia al agua =1 a 70º F, la compresibilidad del líquido es ignorada) a temperatura actual de descarga. M Peso molecular Pi

Esta presión es igual a la presión de disparo + la sobrepresión + 14.7

Ci

Constante de gas

Ta

Temperatura absoluta (temperatura máxima de operación + 460 ºF)

Z

Factor de compresibilidad

ρ

Densidad (aire= 0.075 Lbs/pies3 a 14.7 psig y 60º F)

VF

Factor de corrección para vapor o gas, solo aplica para válvulas fuelladas

FL

Factor de corrección para liquido, solo aplica para válvulas fuelladas

Pb

Contra presión de flujo

Sf

Factor de corrección para vapor sobrecalentado

Kn

Factor de corrección Napier

Sección

Sobrepresión

Si Pi es menor a

Kn

Rango de Pi psig 1521 a 3100

Calc.

Kn

Pi es superior a

Kn

VIII

10%

1424

1.0

1424 a 2903

Calc.

2903

1.0

I

3%

1521

1.0

N/A

̃

Formulas de cálculo para válvulas convencionales y bonete abierto Válvulas convencionales y bonete abierto - Serie 1900 y 1900/P3 con contrapresión constante inferior al 55% de la presión de ajuste GASES: Libras por hora

GASES: Pies cúbicos por minuto Densidad ρ=0.0763 (S.G.)

AIRE: Pies cúbicos por minuto

VAPOR: Libras por hora a 10% de sobrepresión

34

www.walworthvalves.com

VAPOR: Libras por hora a 3% de sobrepresión

LÍQUIDOS: Galones por minuto a 25% de sobrepresión

LÍQUIDOS: Galones por minuto a 10% de sobrepresión

VÁLVULAS DE SEGURIDAD Y ALIVIO DE ACERO WALWORTH APLICACIÓN Y SELECCIÓN DE VÁLVULA Fórmulas de cálculo para válvulas fuelladas

Las válvulas fuelladas hacen factible mantener la presión de calibración bajo la exposición de contrapresiones variables, sin embargo las fórmulas para la selección adecuada de estas válvulas difiere con respecto a las válvulas convencionales.

Válvulas fuelladas - Serie 1900-30 con contrapresión variable GASES: Libras por hora

GASES: Pies cúbicos por minuto Densidad ρ=0.0763 (S.G.)

AIRE: Pies cúbicos por minuto

VAPOR: Libras por hora a 3% de sobrepresión

LÍQUIDOS: Galones por minuto a 25% de sobrepresión

LÍQUIDOS: Galones por minuto a 10% de sobrepresión

VAPOR: Libras por hora a 10% de sobrepresión

Fórmulas de cálculo para válvulas portátiles Válvulas portátiles - Serie 1970 & 1975 con contrapresión constante inferior al 55% de la presión de ajuste GASES: Libras por hora

GASES: Pies cúbicos por minuto Densidad ρ=0.0763 (S.G.)

AIRE: Pies cúbicos por minuto

VAPOR: Libras por hora a 3% de Sobrepresión

LÍQUIDOS: Galones por minuto a 25% de sobrepresión

LÍQUIDOS: Galones por minuto a 10% de sobrepresión

VAPOR: Libras por hora a 10% de sobrepresión

www.walworthvalves.com

35

WALWORTH STEEL SAFETY AND RELIEF VALVES

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900 AND 1900-30 ORIFICE D API AREA 0.110 PULG2

800 700 600 500

CARBON STEEL SPRING

TEMPERATURE (ºF)

400 300 200 100 0 -100

STAINLES STEEL SPRING

-200 -300 -400

200

400

600

800

1000

1200

1400

1600

ADJUSTING PRESSURE (PSI)

Model and valve type

36

Valve size

Conventional

Bellows

Inlet x Outlet

1905 Dc 1906 Dc 1910 Dc 1912 Dc 1905 Dt 1906 Dt 1910 Dt 1912 Dt 1905 D/L1 1906 D/L1 1910 D/L1 1912 D/L1 1905 D/L2 1906 D/L2 1910 D/L2 1912 D/L2 1905 D/L3 1906 D/L3 1910 D/L3 1912 D/L3

1905-30 Dc 1906-30 Dc 1910-30 Dc 1912-30 Dc 1905-30 Dt 1906-30 Dt 1910-30 Dt 1912-30 Dt 1905-30 D/L1 1906-30 D/L1 1910-30 D/L1 1912-30 D/L1 1905-30 D/L2 1906-30 D/L2 1910-30 D/L2 1912-30 D/L2 1905-30 D/L3 1906-30 D/L3 1910-30 D/L3 1912-30 D/L3

1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2

www.walworthvalves.com

Ansi Flange Class

Contra pressure and Temperature Inlet Limits

Contra pressure Limit at 100°F

Inlet R.F. or R.J.

Outlet R.F.

-450°F -150°F -75°F -20°F 450°F -151°F -76°F -21°F +100°F

800°F

Conventional

Bellows

150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600#

150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150#

285# 185# 285# 285# 740# 615# 1480# 1235# 185# 285# 615# 1238# 285# 285# 740# 1480# 275# 275# 720# 1440# 275# 275# 615# 1235# -

80# 285# 410# 825# -

285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285#

230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230#

Material

Inlet Temperature Range

Body

Spring

Acero al carbón

Acero al carbón

-20°F a 450°F

Acero al carbón

Acero al tungsteno

451°F a 800°F

Acero 3 1/2 % niquel

Acero al carbón

-21°F a -75°F

Acero 3 1/2 % niquel

Acero inoxidable austenítico

-76°F a -150°F

Acero inoxidable austenítico

Acero inoxidable austenítico

-151°F a -450°F

WALWORTH STEEL SAFETY AND RELIEF VALVES

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900 AND 1900-30 ORIFICE E API AREA 0.196 PULG2

800 700 600 500

CARBON STEEL SPRING

TEMPERATURE (ºF)

400 300 200 100 0 -100

STAINLES STEEL SPRING

-200 -300 -400

200

400

600

800

1000

1200

1400

1600

ADJUSTING PRESSURE (PSI)

Model and valve type

Valve size

Conventional

Bellows

Inlet x Outlet

1905 Ec 1906 Ec 1910 Ec 1912 Ec 1905 Et 1906 Et 1910 Et 1912 Et 1905 E/L1 1906 E/L1 1910 E/L1

1905-30 Ec 1906-30 Ec 1910-30 Ec 1912-30 Ec 1905-30 Et 1906-30 Et 1910-30 Et 1912-30 Et 1905-30 E/L1 1906-30 E/L1 1910-30 E/L1 1912-30 E/L1 1905-30 E/L2 1906-30 E/L2 1910-30 E/L2 1912-30 E/L2 1905-30 E/L3 1906-30 E/L3 1910-30 E/L3 1912-30 ED/L3

1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2 1X2

1912 E/L1 1905 E/L2 1906 E/L2 1910 E/L2

1912 E/L2 1905 E/L3 1906 E/L3 1910 E/L3 1912 E/L3

Ansi Flange Class

Contra pressure and Temperature Inlet Limits

Contra pressure Limit at 100°F

Material

Inlet Temperature Range

Inlet R.F. or R.J.

Outlet R.F.

-450°F -150°F -75°F -20°F 450°F -151°F -76°F -21°F +100°F

800°F

Conventional

Bellows

Body

Spring

150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600#

150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150#

285# 185# 285# 285# 740# 615# 1480# 1235# 185# 285# 615# 1235# 285# 285# 740# 1480# 275# 275# 720# 1440# 275# 275# 615# 1235# -

80# 285# 410# 825# -

285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285#

230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230#

Acero al carbón

Acero al carbón

-20°F a 450°F

Acero al carbón

Acero al tungsteno

451°F a 800°F

Acero 3 1/2 % niquel

Acero al carbón

-21°F a -75°F

Acero 3 1/2 % niquel

Acero inoxidable austenítico

-76°F a -150°F

Acero inoxidable austenítico

Acero inoxidable austenítico

-151°F a -450°F

www.walworthvalves.com

37

WALWORTH STEEL SAFETY AND RELIEF VALVES

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900 AND 1900-30 ORIFICE F API AREA 0.307 PULG2

800 700 600 500

CARBON STEEL SPRING

TEMPERATURE (ºF)

400 300 200 100 0 -100

STAINLES STEEL SPRING

-200 -300 -400

200

400

600

800

1000

1200

1400

1600

ADJUSTING PRESSURE (PSI)

Model and valve type

38

Valve size

Conventional

Bellows

Inlet x Outlet

1905 Fc 1906 Fc 1910 Fc 1912 Fc 1905 Ft 1906 Ft 1910 Ft 1912 Ft 1905 F/L1 1906 F/L1 1910 F/L1 1912 F/L1 1905 F/L2 1906 F/L2 1910 F/L2 1912 F/L2 1905 F/L3 1906 F/L3 1910 F/L3 1912 F/L3

1905-30 Fc 1906-30 Fc 1910-30 Fc 1912-30 Fc 1905-30 Ft 1906-30 Ft 1910-30 Ft 1912-30 Ft 1905-30 F/L1 1906-30 F/L1 1910-30 F/L1 1912-30 F/L1 1905-30 F/L2 1906-30 F/L2 1910-30 F/L2 1912-30 F/L2 1905-30 F/L3 1906-30 F/L3 1910-30 F/L3 1912-30 F/L3

11/2X2 11/2X2 11/2X2 11/2X2 11/2X2 11/2X2 11/2X2 11/2X2 11/2X2 11/2X2 11/2X2 11/2X2 11/2X2 11/2X2 11/2X2 11/2X2 11/2X2 11/2X2 11/2X2 11/2X2

www.walworthvalves.com

Ansi Flange Class

Contra pressure and Temperature Inlet Limits

Contra pressure Limit at 100°F

Inlet R.F. or R.J.

Outlet R.F.

-450°F -150°F -75°F -20°F 450°F -151°F -76°F -21°F +100°F

800°F

Conventional

Bellows

150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600#

150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150#

285# 185# 285# 285# 740# 615# 1480# 1235# 185# 285# 615# 1235# 285# 285# 740# 1480# 275# 275# 720# 1440# 275# 275# 615# 1235# -

80# 285# 410# 825# -

285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285#

230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230#

Material

Inlet Temperature Range

Body

Spring

Acero al carbón

Acero al carbón

-20°F a 450°F

Acero al carbón

Acero al tungsteno

451°F a 800°F

Acero 3 1/2 % niquel

Acero al carbón

-21°F a -75°F

Acero 3 1/2 % niquel

Acero inoxidable austenítico

-76°F a -150°F

Acero inoxidable austenítico

Acero inoxidable austenítico

-151°F a -450°F

WALWORTH STEEL SAFETY AND RELIEF VALVES

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900 AND 1900-30 ORIFICE G API AREA 0.503 PULG2

800 700 600 500

CARBON STEEL SPRING

TEMPERATURE (ºF)

400 300 200 100 0 -100

STAINLES STEEL SPRING

-200 -300 -400

200

400

600

800

1000

1200

1400

1600

ADJUSTING PRESSURE (PSI)

Model and valve type

Valve size

Conventional

Bellows

Inlet x Outlet

1905 Gc 1906 Gc 1910 Gc 1912 Gc 1905 Gt 1906 Gt 1910 Gt 1912 Gt 1905 G/L1 1906 G/L1 1910 G/L1 1912 G/L1 1905 G/L2 1906 G/L2 1910 G/L2 1912 G/L2 1905 G/L3 1906 G/L3 1910 G/L3 1912 G/L3

1905-30 Gc 1906-30 Gc 1910-30 Gc 1912-30 Gc 1905-30 Gt 1906-30 Gt 1910-30 Gt 1912-30 Gt 1905-30 G/L1 1906-30 G/L1 1910-30 G/L1 1912-30 G/L1 1905-30 G/L2 1906-30 G/L2 1910-30 G/L2 1912-30 G/L2 1905-30 G/L3 1906-30 G/L3 1910-30 G/L3 1912-30 G/L3

11/2X3 11/2X3 11/2X3 11/2X3 11/2X3 11/2X3 11/2X3 11/2X3 11/2X3 11/2X3 11/2X3 11/2X3 11/2X3 11/2X3 11/2X3 11/2X3 11/2X3 11/2X3 11/2X3 11/2X3

Ansi Flange Class

Contra pressure and Temperature Inlet Limits

Contra pressure Limit at 100°F

Inlet R.F. or R.J.

Outlet R.F.

-450°F -150°F -75°F -20°F 450°F -151°F -76°F -21°F +100°F

800°F

Conventional

Bellows

150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600#

150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150#

285# 185# 285# 285# 740# 615# 1480# 1235# 185# 285# 615# 1235# 285# 285# 740# 1480# 275# 275# 720# 1440# 275# 275# 615# 1235# -

80# 285# 410# 825# -

285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285#

230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230#

Material

Inlet Temperature Range

Body

Spring

Acero al carbón

Acero al carbón

-20°F a 450°F

Acero al carbón

Acero al tungsteno

451°F a 800°F

Acero 3 1/2 % niquel

Acero al carbón

-21°F a -75°F

Acero 3 1/2 % niquel

Acero inoxidable austenítico

-76°F a -150°F

Acero inoxidable austenítico

Acero inoxidable austenítico

-151°F a -450°F

www.walworthvalves.com

39

WALWORTH STEEL SAFETY AND RELIEF VALVES

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900 AND 1900-30 ORIFICE H API AREA 0.785 PULG2

800 700 600 500

300

CARBON STEEL SPRING

TEMPERATURE (ºF)

400

200 100 0 -100

STAINLES STEEL SPRING

-200 -300 -400

200

400

600

800

1000

1200

1400

1600

ADJUSTING PRESSURE (PSI)

Model and valve type

40

Valve size

Ansi Flange Class

Contra pressure and Temperature Inlet Limits

Contra pressure Limit at 100°F

Conventional

Bellows

Inlet x Outlet

Inlet R.F. or R.J.

Outlet R.F.

-450°F -150°F -75°F -20°F 450°F -151°F -76°F -21°F +100°F

800°F

Conventional

Bellows

1905 Hc 1906 Hc 1910 Hc 1912 Hc 1905 Ht 1906 Ht 1910 Ht 1912 Ht 1905 H/L1 1906 H/L1 1910 H/L1 1912 H/L1 1905 H/L2 1906 H/L2 1910 H/L2 1912 H/L2 1905 H/L3 1906 H/L3 1910 H/L3 1912 H/L3

1905-30 Hc 1906-30 Hc 1910-30 Hc 1912-30 Hc 1905-30 Ht 1906-30 Ht 1910-30 Ht 1912-30 Ht 1905-30 H/L1 1906-30 H/L1 1910-30 H/L1 1912-30 H/L1 1905-30 H/L2 1906-30 H/L2 1910-30 H/L2 1912-30 H/L2 1905-30 H/L3 1906-30 H/L3 1910-30 H/L3 1912-30 H/L3

11/2X3 11/2X3 2X3 2X3 11/2X3 11/2X3 2X3 2X3 11/2X3 11/2X3 2X3 2X3 11/2X3 11/2X3 2X3 2X3 11/2X3 11/2X3 2X3 2X3

150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600#

150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150#

285# 185# 285# 285# 740# 615# 1480# 1235# 185# 285# 615# 1235# 285# 285# 740# 1480# 275# 275# 720# 1440# 275# 275# 615# 1235# -

80# 285# 410# 825# -

285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285#

230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230#

www.walworthvalves.com

Material

Inlet Temperature Range

Body

Spring

Acero al carbón

Acero al carbón

-20°F a 450°F

Acero al carbón

Acero al tungsteno

451°F a 800°F

Acero 3 1/2 % niquel

Acero al carbón

-21°F a -75°F

Acero 3 1/2 % niquel

Acero inoxidable austenítico

-76°F a -150°F

Acero inoxidable austenítico

Acero inoxidable austenítico

-151°F a -450°F

WALWORTH STEEL SAFETY AND RELIEF VALVES

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900 AND 1900-30 ORIFICE J API AREA 1.287 PULG2

800 700 600 500

300

CARBON STEEL SPRING

TEMPERATURE (ºF)

400

200 100 0 -100

STAINLES STEEL SPRING

-200 -300 -400

200

400

600

800

1000

1200

1400

1600

ADJUSTING PRESSURE (PSI)

Model and valve type

Valve size

Ansi Flange Class

Contra pressure and Temperature Inlet Limits

Contra pressure Limit at 100°F

Conventional

Bellows

Inlet x Outlet

Inlet R.F. or R.J.

Outlet R.F.

-450°F -150°F -75°F -20°F 450°F -151°F -76°F -21°F +100°F

800°F

Conventional

Bellows

1905 Jc 1906 Jc 1910 Jc 1912 Jc 1905 Jt 1906 Jt 1910 Jt 1912 Jt 1905 J/L1 1906 J/L1 1910 J/L1 1912 J/L1 1905 J/L2 1906 J/L2 1910 J/L2 1912 J/L2 1905 J/L3 1906 J/L3 1910 J/L3 1912 J/L3

1905-30 Jc 1906-30 Jc 1910-30 Jc 1912-30 Jc 1905-30 Jt 1906-30 Jt 1910-30 Jt 1912-30 Jt 1905-30 J/L1 1906-30 J/L1 1910-30 J/L1 1912-30 J/L1 1905-30 J/L2 1906-30 J/L2 1910-30 J/L2 1912-30 J/L2 1905-30 J/L3 1906-30 J/L3 1910-30 J/L3 1912-30 J/L3

2X3 2X3 3X4 3X4 2X3 2X3 3X4 3X4 2X3 2X3 3X4 3X4 2X3 2X3 3X4 3X4 2X3 2X3 3X4 3X4

150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600#

150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150#

275# 275# 500# 625#

80# 285# 410# 825# -

285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285#

230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230# 230#

275# 275# 500# 625# -

285# 80# 285# 285# 740# 410# 1480# 825# 185# 285# 615# 1235# 285# 285# 740# 1480# -

Material

Inlet Temperature Range

Body

Spring

Acero al carbón

Acero al carbón

-20°F a 450°F

Acero al carbón

Acero al tungsteno

451°F a 800°F

Acero 3 1/2 % niquel

Acero al carbón

-21°F a -75°F

Acero 3 1/2 % niquel

Acero inoxidable austenítico

-76°F a -150°F

Acero inoxidable austenítico

Acero inoxidable austenítico

-151°F a -450°F

www.walworthvalves.com

41

WALWORTH STEEL SAFETY AND RELIEF VALVES

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900 AND 1900-30 ORIFICE K API AREA 1.838 PULG2

800 700 600 500

300

CARBON STEEL SPRING

TEMPERATURE (ºF)

400

200 100 0 -100

STAINLES STEEL SPRING

-200 -300 -400

200

400

600

800

1000

1200

1400

1600

ADJUSTING PRESSURE (PSI)

Model and valve type

42

Valve size

Ansi Flange Class

Contra pressure and Temperature Inlet Limits

Contra pressure Limit at 100°F

Conventional

Bellows

Inlet x Outlet

Inlet R.F. or R.J.

Outlet R.F.

-450°F -150°F -75°F -20°F 450°F -151°F -76°F -21°F +100°F

800°F

Conventional

Bellows

1905 Kc 1906 Kc 1910 Kc 1912 Kc 1905 Kt 1906 Kt 1910 Kt 1912 Kt 1905 K/L1 1906 K/L1 1910 K/L1 1912 K/L1 1905 K/L2 1906 K/L2 1910 K/L2 1912 K/L2 1905 K/L3 1906 K/L3 1910 K/L3 1912 K/L3

1905-30 Kc 1906-30 Kc 1910-30 Kc 1912-30 Kc 1905-30 Kt 1906-30 Kt 1910-30 Kt 1912-30 Kt 1905-30 K/L1 1906-30 K/L1 1910-30 K/L1 1912-30 K/L1 1905-30 K/L2 1906-30 K/L2 1910-30 K/L2 1912-30 K/L2 1905-30 K/L3 1906-30 K/L3 1910-30 K/L3 1912-30 K/L3

3X4 3X4 3X4 3X4 3X4 3X4 3X4 3X4 3X4 3X4 3X4 3X4 3X4 3X4 3X4 3X4 3X4 3X4 3X4 3X4

150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600#

150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150#

275# 275# 525# 600#

80# 285# 410# 825# -

285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285#

150# 150# 150# 200# 150# 150# 150# 200# 150# 150# 150# 200# 150# 150# 150# 200# 150# 150# 150# 200#

www.walworthvalves.com

275# 275# 525# 600# -

285# 185# 285# 285# 740# 615# 1480# 1235# 185# 285# 615# 1235# 285# 285# 740# 1480# -

Material

Inlet Temperature Range

Body

Spring

Acero al carbón

Acero al carbón

-20°F a 450°F

Acero al carbón

Acero al tungsteno

451°F a 800°F

Acero 3 1/2 % niquel

Acero al carbón

-21°F a -75°F

Acero 3 1/2 % niquel

Acero inoxidable austenítico

-76°F a -150°F

Acero inoxidable austenítico

Acero inoxidable austenítico

-151°F a -450°F

WALWORTH STEEL SAFETY AND RELIEF VALVES SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900 AND 1900-30 ORIFICE l API AREA 2.853 PULG2

HIGH TUNGSTEN CONTETNALLOY STEEL

800 700 600 500

300

CARBON STEEL SPRING

TEMPERATURE (ºF)

400

200 100 0 -100

STAINLES STEEL SPRING

-200 -300 -400

200

400

600

800

1000

1200

ADJUSTING PRESSURE (PSI)

Model and valve type

Valve size

Ansi Flange Class

Contra pressure and Temperature Inlet Limits

Contra pressure Limit at 100°F

Conventional

Bellows

Inlet x Outlet

Inlet R.F. or R.J.

Outlet R.F.

-450°F -150°F -75°F -20°F 450°F -151°F -76°F -21°F +100°F

800°F

Conventional

Bellows

1905 Lc 1906 Lc 1910 Lc 1912 Lc 1905 Lt 1906 Lt 1910 Lt 1912 Lt 1905 L/L1 1906 L/L1 1910 L/L1 1912 L/L1 1905 L/L2 1906 L/L2 1910 L/L2 1912 L/L2 1905 L/L3 1906 L/L3 1910 L/L3 1912 L/L3

1905-30 Lc 1906-30 Lc 1910-30 Lc 1912-30 Lc 1905-30 Lt 1906-30 Lt 1910-30 Lt 1912-30 Lt 1905-30 L/L1 1906-30 L/L1 1910-30 L/L1 1912-30 L/L1 1905-30 L/L2 1906-30 L/L2 1910-30 L/L2 1912-30 L/L2 1905-30 L/L3 1906-30 L/L3 1910-30 L/L3 1912-30 L/L3

3X4 3X4 4X6 4X6 3X4 3X4 4X6 4X6 3X4 3X4 4X6 4X6 3X4 3X4 4X6 4X6 3X4 3X4 4X6 4X6

150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600#

150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150#

275# 275# 535# 535#

80# 285# 410# 825# -

285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285#

100# 100# 170# 170# 100# 100# 170# 170# 100# 100# 170# 170# 100# 100# 170# 170# 100# 100# 170# 170#

275# 275# 535# 535# -

285# 185# 285# 285# 740# 615# 1000# 1000# 185# 285# 615# 1000# 285# 285# 740# 1000# -

Material

Inlet Temperature Range

Body

Spring

Acero al carbón

Acero al carbón

-20°F a 450°F

Acero al carbón

Acero al tungsteno

451°F a 800°F

Acero 3 1/2 % niquel

Acero al carbón

-21°F a -75°F

Acero 3 1/2 % niquel

Acero inoxidable austenítico

-76°F a -150°F

Acero inoxidable austenítico

Acero inoxidable austenítico

-151°F a -450°F

www.walworthvalves.com

43

WALWORTH STEEL SAFETY AND RELIEF VALVES SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900 AND 1900-30 ORIFICE M API AREA 3.600 PULG2

HIGH TUNGSTEN CONTETNALLOY STEEL

800 700 600 500

300

CARBON STEEL SPRING

TEMPERATURE (ºF)

400

200 100 0 -100

STAINLES STEEL SPRING

-200 -300 -400

200

400

600

800

1000

1200

ADJUSTING PRESSURE (PSI)

Model and valve type

44

Valve size

Ansi Flange Class

Contra pressure and Temperature Inlet Limits

Contra pressure Limit at 100°F

Conventional

Bellows

Inlet x Outlet

Inlet R.F. or R.J.

Outlet R.F.

-450°F -150°F -75°F -20°F 450°F -151°F -76°F -21°F +100°F

800°F

Conventional

Bellows

1905 Mc 1906 Mc 1910 Mc 1912 Mc 1905 Mt 1906 Mt 1910 Mt 1912 Mt 1905 M/L1 1906 M/L1 1910 M/L1 1912 M/L1 1905 M/L2 1906 M/L2 1910 M/L2 1912 M/L2 1905 M/L3 1906 M/L3 1910 M/L3 1912 M/L3

1905-30 Mc 1906-30 Mc 1910-30 Mc 1912-30 Mc 1905-30 Mt 1906-30 Mt 1910-30 Mt 1912-30 Mt 1905-30 M/L1 1906-30 M/L1 1910-30 M/L1 1912-30 M/L1 1905-30 M/L2 1906-30 M/L2 1910-30 M/L2 1912-30 M/L2 1905-30 M/L3 1906-30 M/L3 1910-30 M/L3 1912-30 M/L3

4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6

150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600#

150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150#

275# 275# 525# 600#

80# 285# 410# 825# -

285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285#

80# 80# 160# 160# 80# 80# 160# 160# 80# 80# 160# 160# 80# 80# 160# 160# 80# 80# 160# 160#

www.walworthvalves.com

275# 275# 525# 600# -

285# 185# 285# 285# 740# 615# 1100# 1100# 185# 285# 615# 1100# 285# 285# 740# 1100# -

Material

Inlet Temperature Range

Body

Spring

Acero al carbón

Acero al carbón

-20°F a 450°F

Acero al carbón

Acero al tungsteno

451°F a 800°F

Acero 3 1/2 % niquel

Acero al carbón

-21°F a -75°F

Acero 3 1/2 % niquel

Acero inoxidable Austenítico

-76°F a -150°F

Acero inoxidable Austenítico

Acero inoxidable Austenítico

-151°F a -450°F

WALWORTH STEEL SAFETY AND RELIEF VALVES SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900 AND 1900-30 ORIFICE N API AREA 4.34 PULG2

HIGH TUNGSTEN CONTETNALLOY STEEL

800 700 600 500

300

CARBON STEEL SPRING

TEMPERATURE (ºF)

400

200 100 0 -100

STAINLES STEEL SPRING

-200 -300 -400

200

400

600

800

1000

1200

ADJUSTING PRESSURE (PSI)

Model and valve type

Valve size

Ansi Flange Class

Contra pressure and Temperature Inlet Limits

Contra pressure Limit at 100°F

Conventional

Bellows

Inlet x Outlet

Inlet R.F. or R.J.

Outlet R.F.

-450°F -150°F -75°F -20°F 450°F -151°F -76°F -21°F +100°F

800°F

Conventional

Bellows

1905 Nc 1906 Nc 1910 Nc 1912 Nc 1905 Nt 1906 Nt 1910 Nt 1912 Nt 1905 N/L1 1906 N/L1 1910 N/L1 1912 N/L1 1905 N/L2 1906 N/L2 1910 N/L2 1912 N/L2 1905 N/L3 1906 N/L3 1910 N/L3 1912 N/L3

1905-30 Nc 1906-30 Nc 1910-30 Nc 1912-30 Nc 1905-30 Nt 1906-30 Nt 1910-30 Nt 1912-30 Nt 1905-30 N/L1 1906-30 N/L1 1910-30 N/L1 1912-30 N/L1 1905-30 N/L2 1906-30 N/L2 1910-30 N/L2 1912-30 N/L2 1905-30 N/L3 1906-30 N/L3 1910-30 N/L3 1912-30 N/L3

4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6

150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600#

150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150#

275# 275# 450# 500#

80# 285# 410# 825# -

285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285#

80# 80# 160# 160# 80# 80# 160# 160# 80# 80# 160# 160# 80# 80# 160# 160# 80# 80# 160# 160#

275# 275# 450# 500# -

285# 185# 285# 285# 740# 615# 1000# 1000# 185# 285# 615# 1000# 285# 285# 740# 1000# -

Material

Inlet Temperature Range

Body

Spring

Acero al carbón

Acero al carbón

-20°F a 450°F

Acero al carbón

Acero al tungsteno

451°F a 800°F

Acero 3 1/2 % niquel

Acero al carbón

-21°F a -75°F

Acero 3 1/2 % niquel

Acero inoxidable austenítico

-76°F a -150°F

Acero inoxidable austenítico

Acero inoxidable austenítico

-151°F a -450°F

www.walworthvalves.com

45

WALWORTH STEEL SAFETY AND RELIEF VALVES SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900 AND 1900-30 ORIFICE P API AREA 6.38 PULG2

HIGH TUNGSTEN CONTETNALLOY STEEL

800 700 600 500

300

CARBON STEEL SPRING

TEMPERATURE (ºF)

400

200 100 0 -100 -200

STAINLES STEEL SPRING

-300 -400

200

400

600

800

1000

1200

ADJUSTING PRESSURE (PSI)

Model and valve type

46

Valve size

Ansi Flange Class

Contra pressure and Temperature Inlet Limits

Contra pressure Limit at 100°F

Conventional

Bellows

Inlet x Outlet

Inlet R.F. or R.J.

Outlet R.F.

-450°F -150°F -75°F -20°F 450°F -151°F -76°F -21°F +100°F

800°F

Conventional

Bellows

1905 Pc 1906 Pc 1910 Pc 1912 Pc 1905 Pt 1906 Pt 1910 Pt 1912 Pt 1905 P/L1 1906 P/L1 1910 P/L1 1912 P/L1 1905 P/L2 1906 P/L2 1910 P/L2 1912 P/L2 1905 P/L3 1906 P/L3 1910 P/L3 1912 P/L3

1905-30 Pc 1906-30 Pc 1910-30 Pc 1912-30 Pc 1905-30 Pt 1906-30 Pt 1910-30 Pt 1912-30 Pt 1905-30 P/L1 1906-30 P/L1 1910-30 P/L1 1912-30 P/L1 1905-30 P/L2 1906-30 P/L2 1910-30 P/L2 1912-30 P/L2 1905-30 P/L3 1906-30 P/L3 1910-30 P/L3 1912-30 P/L3

4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6 4X6

150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600#

150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150#

175# 175# 300# 480#

80# 285# 410# 825# -

285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285# 285#

80# 80# 150# 150# 80# 80# 150# 150# 80# 80# 150# 150# 80# 80# 150# 150# 80# 80# 150# 150#

www.walworthvalves.com

175# 175# 300# 480# -

285# 185# 285# 285# 525# 525# 1000# 1000# 185# 285# 525# 1000# 285# 285# 525# 1000# -

Material

Inlet Temperature Range

Body

Spring

Acero al carbón

Acero al carbón

-20°F a 450°F

Acero al carbón

Acero al tungsteno

451°F a 800°F

Acero 3 1/2 % niquel

Acero al carbón

-21°F a -75°F

Acero 3 1/2 % niquel

Acero inoxidable Austenítico

-76°F a -150°F

Acero inoxidable Austenítico

Acero inoxidable Austenítico

-151°F a -450°F

WALWORTH STEEL SAFETY AND RELIEF VALVES

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900 AND 1900-30 ORIFICE Q API AREA 11.05 PULG2

800 700 600 500

300

CARBON STEEL SPRING

TEMPERATURE (ºF)

400

200 100 0 -100

STAINLES STEEL SPRING

-200 -300 -400

100

200

300

400

500

600

ADJUSTING PRESSURE (PSI)

Model and valve type

Valve size

Ansi Flange Class

Contra pressure and Temperature Inlet Limits

Contra pressure Limit at 100°F

Conventional

Bellows

Inlet x Outlet

Inlet R.F. or R.J.

Outlet R.F.

-450°F -150°F -75°F -20°F 450°F -151°F -76°F -21°F +100°F

800°F

Conventional

Bellows

1905 Qc 1906 Qc 1910 Qc 1912 Qc 1905 Qt 1906 Qt 1910 Qt 1912 Qt 1905 Q/L1 1906 Q/L1 1910 Q/L1 1912 Q/L1 1905 Q/L2 1906 Q/L2 1910 Q/L2 1912 Q/L2 1905 Q/L3 1906 Q/L3 1910 Q/L3 1912 Q/L3

1905-30 Qc 1906-30 Qc 1910-30 Qc 1912-30 Qc 1905-30 Qt 1906-30 Qt 1910-30 Qt 1912-30 Qt 1905-30 Q/L1 1906-30 Q/L1 1910-30 Q/L1 1912-30 Q/L1 1905-30 Q/L2 1906-30 Q/L2 1910-30 Q/L2 1912-30 Q/L2 1905-30 Q/L3 1906-30 Q/L3 1910-30 Q/L3 1912-30 Q/L3

6X8 6X8 6X8 6X8 6X8 6X8 6X8 6X8 6X8 6X8 6X8 6X8 6X8 6X8 6X8 6X8 6X8 6X8 6X8 6X8

150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600#

150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150#

165# 165# 250# 300#

80# 165# 300# 600# -

115# 115# 115# 115# 115# 115# 115# 115# 115# 115# 115# 115# 115# 115# 115# 115# 115# 115# 115# 115#

70# 70# 115# 115# 70# 70# 115# 115# 70# 70# 115# 115# 70# 70# 115# 115# 70# 70# 115# 115#

165# 165# 250# 300# -

165# 165# 300# 600# -

165# 165# 300# 600# -

165# 165# 300# 600# 165# 165# 300# 600# -

Material

Inlet Temperature Range

Body

Spring

Acero al carbón

Acero al carbón

-20°F a 450°F

Acero al carbón

Acero al tungsteno

451°F a 800°F

Acero 3 1/2 % niquel

Acero al carbón

-21°F a -75°F

Acero 3 1/2 % niquel

Acero inoxidable austenítico

-76°F a -150°F

Acero inoxidable austenítico

Acero inoxidable austenítico

-151°F a -450°F

www.walworthvalves.com

47

WALWORTH STEEL SAFETY AND RELIEF VALVES

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900 AND 1900-30 ORIFICE R API AREA 16.0 PULG2

800 700 600 500

300

CARBON STEEL SPRING

TEMPERATURE (ºF)

400

200 100 0 -100

STAINLES STEEL SPRING

-200 -300 -400

50

100

150

200

250

300

ADJUSTING PRESSURE (PSI)

Model and valve type

48

Valve size

Ansi Flange Class

Contra pressure and Temperature Inlet Limits

Contra pressure Limit at 100°F

Conventional

Bellows

Inlet x Outlet

Inlet R.F. or R.J.

Outlet R.F.

-450°F -150°F -75°F -20°F 450°F -151°F -76°F -21°F +100°F

800°F

Conventional

Bellows

1905 Rc 1906 Rc 1910 Rc 1912 Rc 1905 Rt 1906 Rt 1910 Rt 1912 Rt 1905 R/L1 1906 R/L1 1910 R/L1 1912 R/L1 1905 R/L2 1906 R/L2 1910 R/L2 1912 R/L2 1905 R/L3 1906 R/L3 1910 R/L3 1912 R/L3

1905-30 Rc 1906-30 Rc 1910-30 Rc 1912-30 Rc 1905-30 Rt 1906-30 Rt 1910-30 Rt 1912-30 Rt 1905-30 R/L1 1906-30 R/L1 1910-30 R/L1 1912-30 R/L1 1905-30 R/L2 1906-30 R/L2 1910-30 R/L2 1912-30 R/L2 1905-30 R/L3 1906-30 R/L3 1910-30 R/L3 1912-30 R/L3

6X8 6X8 6X10 6X10 6X8 6X8 6X10 6X10 6X8 6X8 6X10 6X10 6X8 6X8 6X10 6X10 6X8 6X8 6X10 6X10

150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600# 150# 300# 300# 600#

150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150#

55# 55# 150# 225#

80# 100# 230# 300# -

60# 60# 100# 100# 60# 60# 100# 100# 60# 60# 100# 100# 60# 60# 100# 100# 60# 60# 100# 100#

60# 60# 100# 100# 60# 60# 100# 100# 60# 60# 100# 100# 60# 60# 100# 100# 60# 60# 100# 100#

www.walworthvalves.com

55# 55# 150# 200# -

100# 100# 230# 300# -

100# 100# 230# 300# -

100# 100# 230# 300# 100# 100# 230# 300# -

Material

Inlet Temperature Range

Body

Spring

Acero al carbón

Acero al carbón

-20°F a 450°F

Acero al carbón

Acero al tungsteno

451°F a 800°F

Acero 3 1/2 % niquel

Acero al carbón

-21°F a -75°F

Acero 3 1/2 % niquel

Acero inoxidable austenítico

-76°F a -150°F

Acero inoxidable austenítico

Acero inoxidable austenítico

-151°F a -450°F

WALWORTH STEEL SAFETY AND RELIEF VALVES

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900 AND 1900-30 ORIFICE T API AREA 26.0 PULG2

800 700 600 500

300

CARBON STEEL SPRING

TEMPERATURE (ºF)

400

200 100 0 -100

STAINLES STEEL SPRING

-200 -300 -400

50

100

150

200

250

300

ADJUSTING PRESSURE (PSI)

Model and valve type

Valve size

Conventional

Bellows

Inlet x Outlet

1905 Tc 1906 Tc 1910-1Tc 1910-2Tc 1905 Tt 1906 Tt 1910-1Tt 1910-2Tt 1905 T/L1 1906 T/L1 1910-1T/L1 1910-2T/L1 1905 T/L2 1906 T/L2 1910-1T/L2 1910-2T/L2 1905 T/L3 1906 T/L3 1910-1T/L3 1910-2T/L3

1905-30 Tc 1906-30 Tc 1910-30-1Tc 1910-30-2Tc 1905-30 Tt 1906-30 Tt 1910-30-1Tt 1910-30-2Tt 1905-30 T/L1 1906-30 T/L1 1910-30-1T/L1 1910-30-2T/L1 1905-30 T/L2 1906-30 T/L2 1910-30-1T/L2 1910-30-2T/L2 1905-30 T/L3 1906-30 T/L3 1910-30-1T/L3 1910-30-2T/L3

8X10 8X10 8X10 8X10 8X10 8X10 8X10 8X10 8X10 8X10 8X10 8X10 8X10 8X10 8X10 8X10 8X10 8X10 8X10 8X10

Ansi Flange Class Inlet R.F. or R.J.

Outlet R.F.

150# 300# 300# 300# 150# 300# 300# 300# 150# 300# 300# 300# 150# 300# 300# 300# 150# 300# 300# 300#

150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150# 150#

Contra pressure and Temperature Inlet Limits -450°F -150°F -75°F -20°F 450°F -151°F -76°F -21°F +100°F

50# 50# 65# 65#

50# 50# 65# 65# -

65# 65# 120# 120# -

65# 65# 120# 300# -

65# 65# 120# 300# 65# 65# 120# 300# -

Contra pressure Limit at 100°F

800°F

Conventional

Bellows

65# 65# 120# 300# -

30# 30# 60# 100# 30# 30# 60# 100# 30# 30# 60# 100# 30# 30# 60# 100# 30# 30# 60# 100#

30# 30# 60# 100# 30# 30# 60# 100# 30# 30# 60# 100# 30# 30# 60# 100# 30# 30# 60# 100#

Material

Inlet Temperature Range

Body

Spring

Acero al carbón

Acero al carbón

-20°F a 450°F

Acero al carbón

Acero al tungsteno

451°F a 800°F

Acero 3 1/2 % niquel

Acero al carbón

-21°F a -75°F

Acero 3 1/2 % niquel

Acero inoxidable austenítico

-76°F a -150°F

Acero inoxidable austenítico

Acero inoxidable austenítico

-151°F a -450°F

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49

WALWORTH STEEL SAFETY AND RELIEF VALVES

TEMPERATURE (ºF)

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900/P3 ORIFICE D API AREA 0.110 PULG2

800

700

600

500

400

CARBON STEEL SPRING

300

200

100

200

400

600

ADJUSTING PRESSURE (PSI)

Model and valve type 1905 D/P3 1906 D/P3 1910 D/P3 1912 D/P3

50

Valve size Inlet x Outlet 1X2 1X2 1X2 1X2

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Ansi Flange Class Inlet R.F. or R.J. 150# 300# 300# 600#

Pressure and Temperature Inlet Limits

Outlet R.F.

100°F

150# 150# 150# 150#

285# 285# 600# 600#

Vapor saturado 210# 285# 600# 600#

Inlet Temperature Range

450°F

800°F

450°F

185# 285# 600# 600#

80# 285# 410# 600#

-

WALWORTH STEEL SAFETY AND RELIEF VALVES

TEMPERATURE (ºF)

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900/P3 ORIFICE E API AREA 0.196 PULG2

800

700

600

500

400

CARBON STEEL SPRING

300

200

100

0 200

400

600

ADJUSTING PRESSURE (PSI)

Model and valve type 1905 E/P3 1906 E/P3 1910 E/P3 1912 E/P3

Valve size Inlet x Outlet 1X2 1X2 1X2 1X2

Ansi Flange Class Inlet R.F. or R.J. 150# 300# 300# 600#

Pressure and Temperature Inlet Limits

Outlet R.F.

100°F

150# 150# 150# 150#

285# 285# 600# 600#

Vapor saturado 210# 285# 600# 600#

Inlet Temperature Range

450°F

800°F

450°F

185# 285# 600# 600#

80# 285# 410# 600#

-

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51

WALWORTH STEEL SAFETY AND RELIEF VALVES

TEMPERATURE (ºF)

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900/P3 ORIFICE F API AREA 0.307 PULG2

800

700

600

500

400

CARBON STEEL SPRING

300

200

100

0 200

400

600

ADJUSTING PRESSURE (PSI)

Model and valve type 1905 F/P3 1906 F/P3 1910 F/P3 1912 F/P3

52

Valve size Inlet x Outlet 11/2X2 11/2X2 11/2X2 11/2X2

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Ansi Flange Class Inlet R.F. or R.J. 150# 300# 300# 600#

Pressure and Temperature Inlet Limits

Outlet R.F.

100°F

150# 150# 150# 150#

285# 285# 600# 600#

Vapor saturado 210# 285# 600# 600#

Inlet Temperature Range

450°F

800°F

450°F

185# 285# 600# 600#

80# 285# 410# 600#

-

WALWORTH STEEL SAFETY AND RELIEF VALVES

TEMPERATURE (ºF)

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900/P3 ORIFICE G API AREA 0.503 PULG2

800

700

600

500

400

CARBON STEEL SPRING

300

200

100

0 200

400

600

ADJUSTING PRESSURE (PSI)

Model and valve type 1905 G/P3 1906 G/P3 1910 G/P3 1912 G/P3

Valve size Inlet x Outlet 11/2X3 11/2X3 11/2X3 11/2X3

Ansi Flange Class Inlet R.F. or R.J. 150# 300# 300# 600#

Pressure and Temperature Inlet Limits

Outlet R.F.

100°F

150# 150# 150# 150#

285# 285# 600# 600#

Vapor saturado 210# 285# 600# 600#

Inlet Temperature Range

450°F

800°F

450°F

185# 285# 600# 600#

80# 285# 410# 600#

-

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53

WALWORTH STEEL SAFETY AND RELIEF VALVES

TEMPERATURE (ºF)

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900/P3 ORIFICE H API AREA 0.785 PULG2

800

700

600

500

400

CARBON STEEL SPRING

300

200

100

0 200

400

600

ADJUSTING PRESSURE (PSI)

Model and valve type 1905 H/P3 1906 H/P3 1910 H/P3 1912 H/P3

54

Valve size Inlet x Outlet 11/2X3 11/2X3 2X3 2X3

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Ansi Flange Class Inlet R.F. or R.J. 150# 300# 300# 600#

Pressure and Temperature Inlet Limits

Outlet R.F.

100°F

150# 150# 150# 150#

285# 285# 600# 600#

Vapor saturado 210# 285# 600# 600#

Inlet Temperature Range

450°F

800°F

450°F

185# 285# 600# 600#

80# 285# 410# 600#

-

WALWORTH STEEL SAFETY AND RELIEF VALVES

TEMPERATURE (ºF)

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900/P3 ORIFICE J API AREA 1.287 PULG2

800

700

600

500

400

CARBON STEEL SPRING

300

200

100

0 200

400

600

ADJUSTING PRESSURE (PSI)

Model and valve type 1905 J/P3 1906 J/P3 1910 J/P3 1912 J/P3

Valve size Inlet x Outlet 2X3 2X3 3X4 3X4

Ansi Flange Class Inlet R.F. or R.J. 150# 300# 300# 600#

Pressure and Temperature Inlet Limits

Outlet R.F.

100°F

150# 150# 150# 150#

285# 285# 600# 600#

Vapor saturado 210# 285# 600# 600#

Inlet Temperature Range

450°F

800°F

450°F

185# 285# 600# 600#

80# 285# 410# 600#

-

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55

WALWORTH STEEL SAFETY AND RELIEF VALVES

TEMPERATURE (ºF)

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900/P3 ORIFICE K API AREA 1.838 PULG2

800

700

600

500

400

CARBON STEEL SPRING

300

200

100

0 200

400

600

ADJUSTING PRESSURE (PSI)

Model and valve type 1905 K/P3 1906 K/P3 1910 K/P3 1912 K/P3

56

Valve size Inlet x Outlet 3X4 3X4 3X4 3X4

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Ansi Flange Class Inlet R.F. or R.J. 150# 300# 300# 600#

Pressure and Temperature Inlet Limits

Outlet R.F.

100°F

150# 150# 150# 150#

285# 285# 600# 600#

Vapor saturado 210# 285# 600# 600#

Inlet Temperature Range

450°F

800°F

450°F

185# 285# 600# 600#

80# 285# 410# 600#

-

WALWORTH STEEL SAFETY AND RELIEF VALVES

TEMPERATURE (ºF)

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900/P3 ORIFICE L API AREA 2.853 PULG2

800

700

600

500

400

CARBON STEEL SPRING

300

200

100

0 200

400

600

ADJUSTING PRESSURE (PSI)

Model and valve type 1905 L/P3 1906 L/P3 1910 L/P3 1912 L/P3

Valve size Inlet x Outlet 3X4 3X4 4X6 4X6

Ansi Flange Class Inlet R.F. or R.J. 150# 300# 300# 600#

Pressure and Temperature Inlet Limits

Outlet R.F.

100°F

150# 150# 150# 150#

285# 285# 600# 600#

Vapor saturado 210# 285# 600# 600#

Inlet Temperature Range

450°F

800°F

450°F

185# 285# 600# 600#

80# 285# 410# 600#

-

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57

WALWORTH STEEL SAFETY AND RELIEF VALVES

TEMPERATURE (ºF)

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900/P3 ORIFICE M API AREA 3.60 PULG2

800

700

600

500

400

CARBON STEEL SPRING

300

200

100

0 200

400

600

ADJUSTING PRESSURE (PSI)

Model and valve type 1905 M/P3 1906 M/P3 1910 M/P3 1912 M/P3

58

Valve size Inlet x Outlet 4X6 4X6 4X6 4X6

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Ansi Flange Class Inlet R.F. or R.J. 150# 300# 300# 600#

Pressure and Temperature Inlet Limits

Outlet R.F.

100°F

150# 150# 150# 150#

285# 285# 600# 600#

Vapor saturado 210# 285# 600# 600#

Inlet Temperature Range

450°F

800°F

450°F

185# 285# 600# 600#

80# 285# 410# 600#

-

WALWORTH STEEL SAFETY AND RELIEF VALVES

TEMPERATURE (ºF)

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900/P3 ORIFICE N API AREA 4.34 PULG2

800

700

600

500

400

CARBON STEEL SPRING

300

200

100

0 200

400

600

ADJUSTING PRESSURE (PSI)

Model and valve type 1905 N/P3 1906 N/P3 1910 N/P3 1912 N/P3

Valve size Inlet x Outlet 4X6 4X6 4X6 4X6

Ansi Flange Class Inlet R.F. or R.J. 150# 300# 300# 600#

Pressure and Temperature Inlet Limits

Outlet R.F.

100°F

150# 150# 150# 150#

285# 285# 600# 600#

Vapor saturado 210# 285# 600# 600#

Inlet Temperature Range

450°F

800°F

450°F

185# 285# 600# 600#

80# 285# 410# 600#

-

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59

WALWORTH STEEL SAFETY AND RELIEF VALVES

TEMPERATURE (ºF)

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900/P3 ORIFICE P API AREA 6.38 PULG2

800

700

600

500

400

CARBON STEEL SPRING

300

200

100

0 200

400

600

ADJUSTING PRESSURE (PSI)

Model and valve type 1905 P/P3 1906 P/P3 1910 P/P3 1912 P/P3

60

Valve size Inlet x Outlet 4X6 4X6 4X6 4X6

www.walworthvalves.com

Ansi Flange Class Inlet R.F. or R.J. 150# 300# 300# 600#

Pressure and Temperature Inlet Limits

Outlet R.F.

100°F

150# 150# 150# 150#

285# 285# 525# 600#

Vapor saturado 210# 285# 252# 600#

Inlet Temperature Range

450°F

800°F

450°F

185# 285# 525# 600#

80# 285# 410# 600#

-

WALWORTH STEEL SAFETY AND RELIEF VALVES

TEMPERATURE (ºF)

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900/P3 ORIFICE Q API AREA 11.05 PULG2

800

700

600

500

400

CARBON STEEL SPRING

300

200

100

0 100

200

300

400

500

600

ADJUSTING PRESSURE (PSI)

Model and valve type 1905 Q/P3 1906 Q/P3 1910 Q/P3 1912 Q/P3

Valve size Inlet x Outlet 6X8 6X8 6X8 6X8

Ansi Flange Class Inlet R.F. or R.J. 150# 300# 300# 600#

Pressure and Temperature Inlet Limits

Outlet R.F.

100°F

150# 150# 150# 150#

165# 165# 300# 600#

Vapor saturado 165# 165# 300# 600#

Inlet Temperature Range

450°F

800°F

450°F

165# 165# 300# 600#

80# 165# 300# 600#

-

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61

WALWORTH STEEL SAFETY AND RELIEF VALVES

TEMPERATURE (ºF)

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900/P3 ORIFICE R API AREA 16.0 PULG2

800

700

600

500

400

CARBON STEEL SPRING

300

200

100

0 50

100

150

200

250

300

ADJUSTING PRESSURE (PSI)

Model and valve type 1905 R/P3 1906 R/P3 1910 R/P3 1912 R/P3

62

Valve size Inlet x Outlet 6X8 6X8 6X10 6X10

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Ansi Flange Class Inlet R.F. or R.J. 150# 300# 300# 600#

Pressure and Temperature Inlet Limits

Outlet R.F.

100°F

150# 150# 150# 150#

100# 100# 230# 300#

Vapor saturado 100# 100# 230# 300#

Inlet Temperature Range

450°F

800°F

450°F

100# 100# 230# 300#

100# 100# 230# 300#

-

WALWORTH STEEL SAFETY AND RELIEF VALVES

TEMPERATURE (ºF)

HIGH TUNGSTEN CONTETNALLOY STEEL

SLECTION INDEX FOR VAPORS, STEAM AND LIQUIDS SERIE 1900/P3 ORIFICE T API AREA 26.0 PULG2

800

700

600

500

400

CARBON STEEL SPRING

300

200

100

0 50

100

150

200

250

300

ADJUSTING PRESSURE (PSI)

Model and valve type 1905 T/P3 1906 T/P3 1910-1T/P3 1910-2T/P3

Valve size Inlet x Outlet 8X10 8X10 8X10 8X10

Ansi Flange Class Inlet R.F. or R.J. 150# 300# 300# 300#

Pressure and Temperature Inlet Limits

Outlet R.F.

100°F

150# 150# 150# 150#

65# 65# 120# 300#

Vapor saturado 65# 65# 120# 300#

Inlet Temperature Range

450°F

800°F

450°F

65# 65# 120# 300#

65# 65# 120# 300#

-

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63

VÁLVULAS DE SEGURIDAD Y ALIVIO DE ACERO WALWORTH Constantes para cálculo de orificio (líquidos) Líquido ACETALDEHIDO ACIDO ACETICO ACETILENO AIRE AMONIACO ARGON BENZENO BUTADIENO 1.3 BUTANO N BUTANO ISO DIOXIDO DE CARBONO DISULFURO DE CARBONO MONOXIDO DE CARBONO CLORO CICLOHEXANO N DECANO DOWTHERM A DOWTHERM E ETANO ALCOHO ETILICO CLORURO DE ETILENO ETILENO (ETENO) FREON 11 FREON 12 FREON 22 FREON 114 HELIO N HEXANO CLORURO DE HIDROGENO HIDROGENO SULFURO DE HIDROGENO METANO ALCOHOL METILICO METIL BUTANO CLORURO DE METIL GAS NATURAL OXIDO NITRICO NITROGENO OXIDO NITROSO NONANO N OCTANO OXIGENO N PENTANO PROPANO PROPILENO VAPOR ESTIRENO DIOXIDO DE SULFURO TOLUENO STYRENE DIOXIDO DE SULFURO ACIDO SULFIDRICO TOLUENO

64

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G.E. 0.783 1.049 0.791 0.817 1.65 0.879 0.621 0.579 0.557 1.101 1.263 0.814 1.56 0.779 0.734 0.997 1.181 0.546 0.789 0.903 0.566 1.494 1.486 1.419 1.538 0.75 0.659 0.0709 0.815 0.415 0.792 0.625 0.952 1.502 1.269 1.026 1.226 0.718 0.707 1.014 0.899 0.993 0.91 0.91 1.426 0.631 0.585 0.609 1 0.906 1.434 1.834 0.866

G.E. Temp 64 68 66 110 387 68 68 68 68 35 68 318 29 68 60 212 212 126 68 50 152 63 22 42 30 68 68 423 60 263 68 60 32 60 239 422 128 68 68 60 60 60 60 60 422 60 49 53 39 68 32 60 68

√G.E. 0.885 1.024 0.889 0.904 1.284 0.938 0.788 0.761 0.746 1.049 1.124 0.902 1.249 0.883 0.857 0.998 1.087 0.739 0.888 0.95 0.752 1.222 1.219 1.191 1.24 0.866 0.812 0.266 0.903 0.644 0.89 0.791 0.976 1.225 1.127 1.013 1.107 0.847 0.841 1.007 0.948 0.996 0.954 0.954 1.194 0.794 0.765 0.78 1 0.952 1.197 1.354 0.931

Temp crítica 379 611 455 270 188 551 306 307 273 88 523 218 291 538 655 --90 469 369 49 386 234 205 295 -454 400 -116 464 370 290 -137 233 98 613 565 -----182 386 206 197 706 706 315 -609

VÁLVULAS DE SEGURIDAD Y ALIVIO DE ACERO WALWORTH Constantes para cálculo de orificio (gases y vapores) Gas

ACETALDEHIDO

1.14

315

44.05

6.64

1.519

S.G.

Temp crítica

ACIDO ACETICO

1.15

316

60.05

7.76

2.071

611

ACETILENO

1.26

325

26.04

5.1

0.898

97

AIRE

1.4

338

28.97

5.39

1

22

AMONIACO ARGON

1.33

332

17.03

4.13

0.587

270

BENZENO

1.67

360

39.94

6.32

1.381

188

1.12

313

78.11

8.84

2.89

551

BUTADIENO 1.3

1.12

313

54.09

7.36

1.922

306

BUTANO N

1.09

310

58.12

7.67

2.007

307

BUTANO ISO DIOXIDO DE CARBONO

1.09

310

58.12

7.67

2.007

273

DISULFURO DE CARBONO

1.3

329

44.01

6.64

1.53

88

1.21

322

76.13

8.72

2.628

523

MONOXIDO DE CARBONO CLORO

1.4

338

28

5.29

0.967

218

1.36

334

70.9

8.42

2.45

291

1.09

310

84.16

9.17

2.905

538

1.03

303

142.28

11.93

4.91

655

1.05

312

165

12.85

5.696

--

--

299

147

12.12

5.074

--

1.22

323

30.07

5.48

1.05

90

1.13

314

46.07

6.79

1.59

469

1.19

320

64.52

8.03

2.22

369

1.26

325

28.05

5.3

0.977

49

1.14

315

137.13

11.72

4.742

386

1.14

315

120.92

11

4.147

234

1.18

319

86.48

9.3

2.985

205

1.09

309

170.93

13.07

5.9

295

1.66

359

4

2

0.138

450

1.06

306

86.17

9.29

2.97

454

1.41

339

36.5

6.04

1.22

124

1.41

339

2.016

1.42

0.07

400

1.32

331

34.07

5.84

1.19

213

1.31

330

16.04

4

0.555

116

1.2

321

32.04

5.66

1.11

464

1.08

308

72.15

8.5

2.49

370

1.2

321

50.49

7.1

1.742

290

1.27

326

19

4.36

0.656

--

1.4

338

30

5.48

1.036

137

1.4

338

28

5.29

0.967

233

1.3

329

44

6.63

1.519

98

1.04

304

128.25

11.3

4.43

613

1.05

305

114.22

10.69

3.94

565

1.4

338

32.06

5.66

1.1

182

1.07

307

72.15

8.5

2.49

386

1.13

314

44.09

6.64

1.55

206

1.15

316

44.08

6.49

1.476

197

1.32

331

18.02

4.25

0.622

706

1.07

307

104.14

10.2

3.6

706

1.29

328

64.06

8.004

2.26

315

CICLOHEXANO N DECANO DOWTHERM A DOWTHERM E ETANO ALCOHO ETILICO CLORURO DE ETILENO ETILENO (ETENO) FREON 11 FREON 12 FREON 22 FREON 114 HELIO N HEXANO CLORURO DE HIDROGENO HIDROGENO SULFURO DE HIDROGENO METANO ALCOHOL METILICO METIL BUTANO

CLORURO DE METIL GAS NATURAL OXIDO NITRICO NITROGENO OXIDO NITROSO NONANO N OCTANO OXIGENO N PENTANO PROPANO PROPILENO VAPOR ESTIRENO DIOXIDO DE SULFURO TOLUENO

K

1.09

C1

309

M

92.13

√M

9.61

3.18

379

609

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65

66

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409

416

422

436

448

460

470

480

489

497

506

513

520

527

533

260

280

300

350

400

450

500

550

600

650

700

750

800

850

900

Presión de calibración (psi)

563

569

574

579

584

588

593

597

602

606

610

615

618

622

626

630

633

636

650

663

675

686

696

1150

1200

1250

1300

1350

1400

1450

1500

1550

1600

1650

1700

1750

1800

1850

1900

1950

2000

2200

2400

2600

2800

3000

552

403

240

558

395

220

1100

388

200

1050

380

180

540

371

160

546

361

140

1000

350

120

950

324

308

60

338

287

40

100

259

80

250

20

Temperatura de Saturación

15

1.00 1.00 1.00 0.99 0.99 0.98 0.98 0.97 0.96 0.95 0.94 0.93 0.92 0.91 0.90 0.89 0.88 0.87 0.86 0.86 0.85 0.84 0.83 0.83 0.82 0.81 0.81 0.80 0.79 0.79 0.78 0.78 0.77 0.76 0.76 0.75 0.75 0.74 0.72 0.71 0.70 1.00 1.00 1.00 0.99 0.99 0.98 0.98 0.97 0.96 0.95 0.94 0.93 0.92 0.91 0.90 0.89 0.88 0.87 0.86 0.86 0.85 0.84 0.83 0.83 0.82 0.81 0.81 0.80 0.79 0.79 0.78 0.78 0.77 0.77 0.76 0.75 0.75 0.74 0.72 0.71 0.70 -- 1.00 1.00 1.00 0.99 0.99 0.98 0.97 0.96 0.95 0.94 0.93 0.92 0.91 0.90 0.89 0.88 0.87 0.87 0.86 0.85 0.84 0.84 0.83 0.82 0.82 0.81 0.80 0.79 0.79 0.78 0.78 0.77 0.77 0.76 0.75 0.75 0.74 0.73 0.71 0.70 --- 1.00 1.00 0.99 0.99 0.98 0.97 0.96 0.95 0.94 0.93 0.92 0.91 0.90 0.89 0.88 0.87 0.87 0.86 0.85 0.84 0.84 0.83 0.82 0.82 0.81 0.80 0.80 0.79 0.78 0.78 0.77 0.77 0.76 0.76 0.75 0.74 0.73 0.71 0.70 ---- 1.00 1.00 0.99 0.99 0.98 0.97 0.96 0.94 0.93 0.92 0.91 0.90 0.89 0.89 0.88 0.87 0.86 0.85 0.84 0.84 0.83 0.82 0.82 0.81 0.80 0.80 0.79 0.78 0.78 0.77 0.77 0.76 0.76 0.75 0.74 0.73 0.71 0.70 ----- 1.00 1.00 0.99 0.98 0.97 0.96 0.95 0.94 0.93 0.92 0.91 0.90 0.89 0.88 0.87 0.86 0.85 0.85 0.84 0.83 0.82 0.82 0.81 0.80 0.80 0.79 0.78 0.78 0.77 0.77 0.76 0.76 0.75 0.74 0.73 0.71 0.70 ----- 1.00 1.00 0.99 0.98 0.97 0.96 0.95 0.94 0.93 0.92 0.91 0.90 0.89 0.88 0.87 0.86 0.85 0.85 0.84 0.83 0.82 0.82 0.81 0.80 0.80 0.79 0.78 0.78 0.77 0.77 0.76 0.76 0.75 0.74 0.73 0.71 0.70 ------ 1.00 1.00 0.99 0.98 0.96 0.95 0.94 0.93 0.92 0.91 0.90 0.89 0.88 0.87 0.86 0.85 0.85 0.84 0.83 0.82 0.82 0.81 0.80 0.80 0.79 0.78 0.78 0.77 0.77 0.76 0.76 0.75 0.74 0.73 0.71 0.70 ------ 1.00 1.00 0.99 0.98 0.97 0.95 0.94 0.93 0.92 0.91 0.90 0.89 0.88 0.87 0.86 0.86 0.85 0.84 0.83 0.82 0.82 0.81 0.80 0.80 0.79 0.79 0.78 0.77 0.77 0.76 0.76 0.75 0.74 0.73 0.71 0.70 ------- 1.00 0.99 0.98 0.97 0.96 0.95 0.93 0.92 0.91 0.90 0.89 0.88 0.87 0.86 0.86 0.85 0.84 0.83 0.82 0.82 0.81 0.80 0.80 0.79 0.79 0.78 0.77 0.77 0.76 0.76 0.75 0.74 0.73 0.71 0.70 ------- 1.00 0.99 0.99 0.97 0.96 0.95 0.93 0.92 0.91 0.90 0.89 0.88 0.87 0.86 0.86 0.85 0.84 0.83 0.83 0.82 0.81 0.81 0.80 0.79 0.79 0.78 0.77 0.77 0.76 0.76 0.75 0.74 0.73 0.72 0.71 ------- 1.00 1.00 0.99 0.98 0.96 0.95 0.94 0.93 0.92 0.91 0.90 0.88 0.88 0.87 0.86 0.85 0.84 0.84 0.83 0.82 0.81 0.81 0.80 0.79 0.79 0.78 0.78 0.77 0.76 0.76 0.75 0.74 0.73 0.72 0.71 -------- 1.00 0.99 0.98 0.97 0.95 0.94 0.93 0.92 0.91 0.90 0.89 0.88 0.87 0.86 0.85 0.84 0.84 0.83 0.82 0.81 0.81 0.80 0.79 0.79 0.78 0.78 0.77 0.76 0.76 0.75 0.74 0.73 0.72 0.71 -------- 1.00 0.99 0.98 0.97 0.95 0.94 0.93 0.92 0.91 0.90 0.89 0.88 0.87 0.86 0.85 0.85 0.84 0.83 0.82 0.81 0.81 0.80 0.79 0.79 0.78 0.78 0.77 0.76 0.76 0.75 0.74 0.73 0.72 0.71 -------- 1.00 1.00 0.99 0.97 0.96 0.95 0.93 0.92 0.91 0.90 0.89 0.88 0.87 0.86 0.85 0.85 0.84 0.83 0.82 0.82 0.81 0.80 0.80 0.79 0.78 0.78 0.77 0.77 0.76 0.75 0.74 0.73 0.72 0.71 --------- 1.00 0.99 0.98 0.96 0.95 0.93 0.92 0.91 0.90 0.89 0.89 0.87 0.86 0.85 0.85 0.84 0.83 0.82 0.82 0.81 0.80 0.80 0.79 0.78 0.78 0.77 0.77 0.76 0.75 0.74 0.73 0.72 0.71 --------- 1.00 1.00 0.99 0.97 0.96 0.94 0.93 0.92 0.91 0.89 0.89 0.88 0.86 0.85 0.85 0.84 0.83 0.82 0.82 0.81 0.81 0.80 0.79 0.78 0.78 0.77 0.77 0.76 0.76 0.74 0.73 0.72 0.71 ---------- 1.00 0.99 0.98 0.96 0.95 0.93 0.92 0.91 0.90 0.89 0.88 0.86 0.85 0.85 0.84 0.84 0.83 0.82 0.81 0.81 0.80 0.79 0.79 0.78 0.77 0.77 0.76 0.76 0.74 0.73 0.72 0.71 ----------- 1.00 0.99 0.97 0.96 0.94 0.93 0.92 0.90 0.89 0.88 0.87 0.86 0.86 0.85 0.84 0.83 0.82 0.82 0.81 0.80 0.79 0.79 0.78 0.78 0.77 0.76 0.76 0.74 0.73 0.72 0.71 ----------- 1.00 0.99 0.98 0.96 0.94 0.93 0.92 0.91 0.90 0.89 0.87 0.86 0.86 0.85 0.84 0.83 0.82 0.82 0.81 0.80 0.79 0.79 0.78 0.78 0.77 0.76 0.76 0.74 0.73 0.72 0.71 ------------ 1.00 0.99 0.97 0.95 0.94 0.92 0.91 0.90 0.89 0.87 0.86 0.86 0.85 0.84 0.83 0.82 0.82 0.81 0.80 0.80 0.79 0.78 0.78 0.77 0.76 0.76 0.74 0.73 0.72 0.71 ------------ 1.00 0.99 0.98 0.96 0.94 0.93 0.91 0.90 0.89 0.88 0.86 0.86 0.85 0.84 0.83 0.83 0.82 0.81 0.80 0.80 0.79 0.78 0.78 0.77 0.76 0.76 0.75 0.73 0.72 0.71 ------------- 1.00 0.99 0.97 0.95 0.94 0.92 0.91 0.90 0.88 0.87 0.86 0.86 0.85 0.84 0.83 0.82 0.81 0.81 0.80 0.79 0.78 0.78 0.77 0.77 0.76 0.75 0.73 0.72 0.71 ------------- 1.00 0.99 0.97 0.96 0.94 0.93 0.91 0.90 0.89 0.87 0.87 0.86 0.85 0.84 0.83 0.82 0.81 0.81 0.80 0.79 0.79 0.78 0.77 0.77 0.76 0.75 0.73 0.72 0.71 ------------- 1.00 1.00 0.98 0.96 0.94 0.93 0.92 0.90 0.89 0.87 0.87 0.86 0.85 0.84 0.83 0.83 0.82 0.81 0.80 0.79 0.79 0.78 0.77 0.77 0.76 0.75 0.73 0.72 0.71 -------------- 1.00 0.99 0.97 0.95 0.94 0.92 0.91 0.89 0.87 0.87 0.86 0.85 0.84 0.84 0.83 0.82 0.81 0.80 0.80 0.79 0.78 0.78 0.77 0.76 0.75 0.73 0.72 0.71 -------------- 1.00 0.99 0.98 0.96 0.94 0.93 0.92 0.90 0.88 0.88 0.87 0.86 0.84 0.84 0.83 0.82 0.81 0.81 0.80 0.79 0.78 0.78 0.77 0.76 0.75 0.74 0.72 0.71 -------------- 1.00 1.00 0.99 0.97 0.95 0.93 0.92 0.90 0.88 0.88 0.87 0.86 0.85 0.84 0.83 0.82 0.81 0.81 0.80 0.79 0.79 0.78 0.77 0.77 0.75 0.74 0.72 0.71 --------------- 1.00 0.99 0.97 0.95 0.94 0.92 0.90 0.88 0.88 0.87 0.86 0.85 0.84 0.83 0.82 0.82 0.81 0.80 0.79 0.79 0.78 0.77 0.77 0.75 0.74 0.72 0.71 --------------- 1.00 0.99 0.98 0.96 0.94 0.93 0.91 0.89 0.89 0.87 0.86 0.85 0.84 0.83 0.83 0.82 0.81 0.80 0.79 0.79 0.78 0.77 0.77 0.75 0.74 0.72 0.71 --------------- 1.00 1.00 0.99 0.97 0.95 0.93 0.91 0.89 0.89 0.88 0.87 0.85 0.85 0.84 0.83 0.82 0.81 0.80 0.80 0.79 0.78 0.77 0.77 0.75 0.74 0.73 0.71 ---------------- 1.00 0.99 0.98 0.95 0.94 0.92 0.89 0.89 0.88 0.87 0.86 0.85 0.84 0.83 0.82 0.81 0.81 0.80 0.79 0.78 0.78 0.77 0.75 0.74 0.73 0.71 ---------------- 1.00 0.99 0.98 0.96 0.94 0.92 0.90 0.90 0.88 0.87 0.86 0.85 0.84 0.83 0.82 0.81 0.81 0.80 0.79 0.78 0.78 0.77 0.76 0.74 0.73 0.71 ---------------- 1.00 0.99 0.98 0.97 0.95 0.92 0.90 0.90 0.89 0.87 0.86 0.85 0.84 0.83 0.82 0.81 0.81 0.80 0.79 0.78 0.78 0.77 0.76 0.74 0.73 0.71 ----------------- 1.00 0.99 0.97 0.95 0.93 0.91 0.90 0.89 0.88 0.86 0.85 0.85 0.84 0.83 0.82 0.81 0.80 0.79 0.79 0.78 0.77 0.76 0.74 0.73 0.72 ----------------- 1.00 0.99 0.98 0.96 0.93 0.91 0.91 0.89 0.88 0.87 0.86 0.85 0.84 0.83 0.82 0.81 0.80 0.79 0.79 0.78 0.77 0.76 0.74 0.73 0.72 ----------------- 1.00 0.99 0.98 0.96 0.94 0.91 0.91 0.90 0.88 0.87 0.86 0.85 0.84 0.83 0.82 0.81 0.80 0.80 0.79 0.78 0.78 0.76 0.74 0.73 0.72 ----------------- 1.00 1.00 0.99 0.97 0.94 0.92 0.92 0.90 0.89 0.87 0.86 0.85 0.84 0.83 0.82 0.81 0.81 0.80 0.79 0.78 0.78 0.76 0.75 0.73 0.72 ------------------ 1.00 0.99 0.98 0.95 0.93 0.92 0.90 0.89 0.88 0.86 0.85 0.84 0.83 0.82 0.81 0.81 0.80 0.79 0.78 0.78 0.76 0.75 0.73 0.72 ------------------ 1.00 0.99 0.98 0.95 0.94 0.92 0.91 0.89 0.88 0.87 0.86 0.84 0.84 0.83 0.82 0.81 0.80 0.79 0.78 0.78 0.76 0.75 0.73 0.72 ------------------ 1.00 0.99 0.99 0.96 0.94 0.93 0.91 0.90 0.88 0.87 0.86 0.85 0.84 0.83 0.82 0.81 0.80 0.79 0.79 0.78 0.76 0.75 0.73 0.72 ------------------ 1.00 1.00 0.99 0.97 0.94 0.93 0.91 0.90 0.88 0.87 0.86 0.85 0.84 0.83 0.82 0.81 0.80 0.79 0.79 0.78 0.76 0.75 0.73 0.72 ------------------- 1.00 0.99 0.97 0.95 0.94 0.92 0.90 0.89 0.87 0.86 0.85 0.84 0.83 0.82 0.81 0.80 0.80 0.79 0.78 0.76 0.75 0.73 0.72 ------------------- 1.00 0.99 0.98 0.96 0.94 0.92 0.91 0.89 0.88 0.87 0.85 0.84 0.83 0.82 0.81 0.81 0.80 0.79 0.78 0.77 0.75 0.73 0.72 ------------------- 1.00 0.99 0.98 0.96 0.95 0.93 0.91 0.89 0.88 0.87 0.85 0.84 0.83 0.82 0.82 0.81 0.80 0.79 0.78 0.77 0.75 0.73 0.72 ------------------- 1.00 0.99 0.99 0.97 0.95 0.93 0.91 0.90 0.88 0.87 0.86 0.85 0.84 0.83 0.82 0.81 0.80 0.79 0.78 0.77 0.75 0.73 0.72 ------------------- 1.00 1.00 0.99 0.97 0.95 0.93 0.92 0.90 0.89 0.87 0.86 0.85 0.84 0.83 0.82 0.81 0.80 0.79 0.79 0.77 0.75 0.74 0.72 ------------------- 1.00 1.00 0.99 0.98 0.96 0.94 0.92 0.90 0.89 0.87 0.86 0.85 0.84 0.83 0.82 0.81 0.80 0.79 0.79 0.77 0.75 0.74 0.72 -------------------- 1.00 0.99 0.98 0.97 0.94 0.92 0.91 0.89 0.88 0.86 0.85 0.84 0.83 0.82 0.81 0.80 0.80 0.79 0.77 0.75 0.74 0.72 -------------------- 1.00 0.99 0.99 0.97 0.95 0.93 0.91 0.89 0.88 0.87 0.85 0.84 0.83 0.82 0.81 0.80 0.80 0.79 0.77 0.75 0.74 0.72 -------------------- 1.00 1.00 0.99 0.99 0.97 0.95 0.93 0.91 0.89 0.88 0.86 0.85 0.84 0.83 0.82 0.81 0.80 0.79 0.77 0.76 0.74 0.73 --------------------- 1.00 1.00 0.99 0.98 0.96 0.94 0.92 0.90 0.89 0.87 0.86 0.85 0.84 0.83 0.82 0.81 0.80 0.78 0.76 0.74 0.73 --------------------- 1.00 1.00 0.99 0.99 0.98 0.96 0.94 0.92 0.90 0.88 0.87 0.85 0.84 0.83 0.82 0.81 0.80 0.78 0.76 0.75 0.73 ---------------------- 1.00 1.00 0.99 0.99 0.98 0.95 0.93 0.91 0.89 0.88 0.86 0.85 0.84 0.83 0.82 0.81 0.79 0.77 0.75 0.73 ----------------------1.00 1.00 0.99 0.98 0.97 0.94 0.92 0.90 0.89 0.87 0.86 0.84 0.83 0.82 0.81 0.79 0.77 0.75 0.73

280 300 320 340 360 380 400 420 440 460 480 500 520 5240 560 580 600 620 640 660 680 700 720 740 760 780 800 820 840 860 880 900 920 940 960 980 1000 1050 1100 1150 1200

Temperatura (ºF)

VÁLVULAS DE SEGURIDAD Y ALIVIO DE ACERO WALWORTH

Factor de corrección de vapor sobrecalentado Sf

VÁLVULAS DE SEGURIDAD Y ALIVIO DE ACERO WALWORTH Factor de compresibilidad 1

0.9

PM 0.8

30

50

60

70

90

40

100

130

140

120

0.6

80

150

110

0.7

0.5

0.4 0

100

200

300

400

500

600

700

800

Presión PSI

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67

VÁLVULAS DE SEGURIDAD Y ALIVIO DE ACERO WALWORTH Factor de corrección FL y Vf 1.2 CURVA DE CAPACIDAD a 15% DE SOBREPRESIóN

Factor de corrección - Fl

1

0.8

0.6

0.4

0.2

0

10

20

30

40

50

60

70

80

90

80

90

% de contrapresión

1.2 CURVA DE CAPACIDAD a 10% DE SOBREPRESIóN

ESTA

1

BL E C E ST E R P RE AB SI Ó LE CE ES R P N SO TA BL RE BR EC SI ER Ó N E 10 PR 0 SO PS ES BR IÓ IG N E SO 25 BR PS E IG 11 .9 PS IG

Factor de corrección - Vf

0.8

0.6

0.4

0.2

0

68

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10

20

30

40

50

% de contrapresión

60

70

VÁLVULAS DE SEGURIDAD Y ALIVIO DE ACERO WALWORTH Material especial para servicio corrosivo Partes Internas (excepto resorte) S2 ASTM A-216 Grade WCB ASTM A-276 Type 316/ASTM A-351 Gr. CF8M

Válvula Completa (excepto resorte) S3 ASTM A-351 Gr. CF8M ASTM A-276 Type 316/ASTM A-351 Gr. CF8M

ASTM A-276 Type 316/ASTM A-351 Gr. CF8M ASTM A-313 Type 316 ASTM A-276 Type 316/ASTM A-351 Gr. CF8M ASTM A-276 Type 316 ASTM A-276 Type 316/ASTM A-351 Gr. CF8M ASTM A-276 Type 316/ASTM A-351 Gr. CF8M ASTM A-276 Type 316 ASTM A-313 Type 316 ASTM A-216 Grade WCB ASTM A-193 Grade B7 ASTM A-194 Grade 2H ASTM A-228, A-229 Resorte ASTM A-681 Type H21, H26 Roldana resorte ASTM A-276 Type 316 Tornillo compresión ASTM A-276 Type 316 Tuerca tornillo compresión ASTM A-276 Type 316 Tubo eductor ASTM A-269 Type 316 ASTM A-108 Grade 1018/ASTM A-216 Grade Casquillo WCB Junta bonete Monel Junta guía Monel Junta casquillo Monel Junta perno anillo de ajuste Monel Junta del fuelle* Fibra Sint. c/ elastomeros Fuelle* Inoxidable 316L Vástago ASTM A-276 Type 316 Perno cabeza aguja ASTM A-276 Type 316 Cabeza perno anillo ajuste ASTM A-276 Type 316 Contratuerca ASTM A-276 Type 316 Tapón Commercial Roldana limite** ASTM A-276 Type 316

ASTM A-276 Type 316/ASTM A-351 Gr. CF8M ASTM A-313 Type 316 ASTM A-276 Type 316/ASTM A-351 Gr. CF8M ASTM A-276 Type 316 ASTM A-276 Type 316/ASTM A-351 Gr. CF8M ASTM A-276 Type 316/ASTM A-351 Gr. CF8M ASTM A-276 Type 316 ASTM A-313 Type 316 ASTM A-351 Gr. CF8M ASTM A-193 Grade B7 ASTM A-194 Grade 2H ASTM A-228, A-229 ASTM A-681 Type H21, H26 ASTM A-276 Type 316 ASTM A-276 Type 316 ASTM A-276 Type 316 ASTM A-269 Type 316

Componentes Cuerpo ó base Tobera Disco Retén del disco Anillo de ajuste Perno anillo de ajuste Portadisco Guía Cabeza de aguja Retén de la aguja Bonete Espárrago Tuerca espárrago

Partes Internas -21ºF hasta -75ºF L1 Cuerpo ó base ASTM A-352 Grade LC3 Tobera ASTM A-276 Type 316/ASTM A-351 Gr. CF8M Disco ASTM A-276 Type 316/ASTM A-351 Gr. CF8M Retén del disco ASTM A-313 Type 316 Anillo de ajuste ASTM A-276 Type 304/ASTM A-351 Gr. CF8 Perno anillo de ajuste ASTM A-276 Type 304 Portadisco ASTM A-276 Type 304/ASTM A-351 Gr. CF8 Guía ASTM A-276 Type 316/ASTM A-351 Gr. CF8M Cabeza de aguja ASTM A-276 Type 410 Retén de la aguja ASTM A-313 Type 316 Bonete ASTM A-352 Grade LC3 Espárrago Inox. ASTM A-320 Grade B8 Tuerca espárrago Inox. ASTM A-194 Grade 8 ASTM A-228, A-229 Resorte ASTM A-681 Type H21, H26 Roldana resorte ASTM A-108 Grade 1018 Tornillo compresión ASTM A-276 Type 410 Tuerca tornillo compresión ASTM A-276 Type 410 Tubo eductor ASTM A-269 Type 304 Casquillo ASTM A-352 Grade LC3 Junta bonete ASTM A-635 Gr. 1010 Junta guía ASTM A-635 Gr. 1010 Junta casquillo ASTM A-635 Gr. 1010 Junta perno anillo de ajuste ASTM A-635 Gr. 1010 Junta del fuelle* Fibra Sint. c/ elastomeros Fuelle* Inoxidable 316L Vástago ASTM A-276 Type 410 Perno cabeza aguja ASTM A-276 Type 410 Cabeza perno anillo ajuste ASTM A-276 Type 304 Contratuerca ASTM A-108 Grade 1018 Tapón Commercial Roldana limite** ASTM A-276 Type 304

S4 ASTM A-351 Gr. CF8M ASTM A-276 Type 316/ASTM A-351 Gr. CF8M ASTM A-276 Type 316/ASTM A-351 Gr. CF8M ASTM A-313 Type 316 ASTM A-276 Type 316/ASTM A-351 Gr. CF8M ASTM A-276 Type 316 ASTM A-276 Type 316/ASTM A-351 Gr. CF8M ASTM A-276 Type 316/ASTM A-351 Gr. CF8M ASTM A-276 Type 316 ASTM A-313 Type 316 ASTM A-351 Gr. CF8M ASTM A-193 Grade B7 ASTM A-194 Grade 2H ASTM A-228, A-229 ASTM A-276 Type 316 ASTM A-276 Type 316 ASTM A-276 Type 316 ASTM A-269 Type 316

ASTM A-276 Type 316/ASTM A-351 Gr. CF8M

ASTM A-276 Type 316/ASTM A-351 Gr. CF8M

Monel Monel Monel Monel Fibra Sint. c/ elastomeros Inoxidable 316L ASTM A-276 Type 316 ASTM A-276 Type 316 ASTM A-276 Type 316 ASTM A-276 Type 316 Commercial ASTM A-276 Type 316

Monel Monel Monel Monel Fibra Sint. c/ elastomeros Inoxidable 316L ASTM A-276 Type 316 ASTM A-276 Type 316 ASTM A-276 Type 316 ASTM A-276 Type 316 Commercial ASTM A-276 Type 316

Material especial para servicio a baja temperatura Componentes

Válvula Completa

Válvula Completa -76ºF hasta -150ºF L2 ASTM A-352 Grade LC3 ASTM A-276 Type 316/ASTM A-351 Gr. CF8M ASTM A-276 Type 316/ASTM A-351 Gr. CF8M Inconel ASTM A-276 Type 304/ASTM A-351 Gr. CF8 ASTM A-276 Type 316 ASTM A-276 Type 304/ASTM A-351 Gr. CF8 ASTM A-276 Type 316/ASTM A-351 Gr. CF8M ASTM A-276 Type 316 Inconel ASTM A-352 Grade LC3 Inox. ASTM A-320 Grade B8 Inox. ASTM A-194 Grade 8

Válvula Completa -151ºF hasta -450ºF L3 ASTM A-351 Gr. CF8 ASTM A-276 Type 304/ASTM A-351 Gr. CF8 ASTM A-276 Type 304/ASTM A-351 Gr. CF8 Inconel ASTM A-276 Type 316/ASTM A-351 Gr. CF8M ASTM A-276 Type 316 ASTM A-276 Type 304/ASTM A-351 Gr. CF8 ASTM A-276 Type 316/ASTM A-351 Gr. CF8M Inconel ASTM A-351 Gr. CF8 Inox. ASTM A-320 Grade B8 Inox. ASTM A-194 Grade 8

ASTM A-313 Type 302

ASTM A-313 Type 302

ASTM A-276 Type 304 ASTM A-276 Type 316 ASTM A-276 Type 316 ASTM A-269 Type 304 ASTM A-352 Grade LC3 ASTM A-635 Gr. 1010 ASTM A-635 Gr. 1010 ASTM A-635 Gr. 1010 ASTM A-635 Gr. 1010 Fibra Sint. c/ elastomeros Inoxidable 316L ASTM A-276 Type 410 ASTM A-276 Type 410 ASTM A-276 Type 304 ASTM A-108 Grade 1018 Commercial ASTM A-276 Type 304

ASTM A-276 Type 304 ASTM A-276 Type 316 ASTM A-276 Type 316 ASTM A-269 Type 304 ASTM A-351 Gr. CF8 ASTM A-635 Gr. 1010 ASTM A-635 Gr. 1010 ASTM A-635 Gr. 1010 ASTM A-635 Gr. 1010 Fibra Sint. c/ elastomeros Inoxidable 316L ASTM A-276 Type 410 ASTM A-276 Type 410 ASTM A-276 Type 304 ASTM A-108 Grade 1018 Commercial ASTM A-276 Type 304

*Para válvulas fuelladas únicamente **La roldana limite es utilizada únicamente en los orificios “D” y “E”

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VÁLVULAS DE SEGURIDAD Y ALIVIO DE ACERO WALWORTH ACCESORIOS

Mecanismos de levantamiento El propósito de un mecanismo de levantamiento, es abrir la válvula cuando la presión del sistema es menor que la presión de calibración en la válvula. Los tipos básicos son: Palanca plana y palanca empacada. La palanca de levantamiento puede ser usada con los siguientes fines: 1. Para levantar el disco del asiento de la válvula periódicamente durante la operación del equipo, para asegurar que el disco no esta atascado en la guía como resultado de la corrosión, deposito de sulfuro, etc. Esto asegura una protección absoluta de la unidad en todo momento. Para levantar el disco, la presión de operación deberá ser por lo menos el 75% de la presión de calibración, de lo contrario las áreas de sello podrían ser dañadas. 2. Para remover partículas extrañas, las cuales son atrapadas algunas veces bajo el asiento, cuando la válvula cierra. Una limpieza inmediata del asiento de la válvula con la presión del fluido de carga, usando la palanca de levantamiento, evitara que las áreas de sello se dañen y que por consecuencia la válvula fugue. Esto ahorra costos de mantenimiento en fechas posteriores y en algunos casos evitará un paro del equipo. 3. Para ventilar el equipo a la atmósfera o tubería de descarga.

Palanca Plana

Palanca Empacada

Esta palanca es utilizada donde no se necesite tener un sello hermético en el lado de descarga de la válvula y donde las condiciones del servicio requieren disparar la válvula periódicamente. Este ensamble no deberá ser utilizado en donde el escape de fluidos a la atmósfera es indeseable y cuando se trabaja en condiciones de contrapresión.

Como su nombre lo indica, esta palanca de levantamiento está sellada alrededor del eje de la palanca, por lo que no habrá ninguna fuga alrededor de la parte superior de la válvula cuando esté abierta, o cuando exista contrapresión. La palanca empacada deberá ser utilizada cuando los fluidos son peligrosos a la atmósfera y el personal.

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VÁLVULAS DE SEGURIDAD Y ALIVIO DE ACERO WALWORTH ACCESORIOS

Casquillo Bridado

Las válvulas WALWORTH son suministradas con casquillo roscado pero también están disponibles en casquillos bridados. Se utilizan cuando existen presiones de ajuste elevadas. Otra razón para solicitar este tipo de casquillo radica en que la válvula, por necesidades de ingeniería del usuario requiera que en el futuro se agregue la palanca empacada, lo cual se puede hacer solicitando el kit del tipo de palanca y ensamblar sin necesidad de desarmar la válvula original.

Mordaza (Gag)

El propósito de la mordaza es mantener cerrada la válvula de seguridad o alivio mientras el equipo está siendo sometido a una presión que es mayor que la presión de calibración de la válvula, como es el caso de la prueba hidrostática, mantenimiento y purgas de los equipos. Este es el único propósito por el cual la mordaza es proporcionada, y esto puede ser llevado a cabo colocando la mordaza con la mano. La mordaza nunca debe estar colocada en la válvula durante la operación del equipo. Esta debe ser removida después de su uso y guardarse en un lugar apropiado y seguro.

LABORATORIO PARA PRUEBAS CON VAPOR Equipo de pruebas Las válvulas WALWORTH de Seguridad y Alivio en Acero y de Seguridad y Alivio en Bronce son probadas siguiendo el código ASME secciones I y VIII que regulan la construcción de calderas y recipientes a presión. En WALWORTH, estamos comprometidos con la seguridad de los equipos, instalaciones y personal de nuestros clientes, por esta razón, hemos implementado un laboratorio para pruebas con vapor que nos permiten asegurar el desempeño de nuestras líneas de válvulas de seguridad empleadas en servicio con vapor.

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DESIGN BASIS

All of WALWORTH’s Valve Designs, when applicable, follow one or more of the following standards.

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API

American Petroleum Institute. 6D Steel gate, ball and plug valves for pipeline service. 6FA Specification for Fire Test for Valves.

ASME/ANSI

American National Standard Institute: B2.1 Pipe threads. B16.5 Steel pipe Flanges and flanged fittings. B16.10 Length of ferrous flanged and welding end valves. B16.25 Butt-welding ends. B18.2 Square and hexagon bolts and nuts. B16.47 Large Diameter Steel Flanges

ASTM

American Society for Testing and Materials: A-193 Alloy steel bolting material for high temperature service. A-194 Carbon and alloy steel nuts for high pressure and high temperature service, class2. A-216 Standard specification for steel castings, Carbon, Suitable for Fusion Welding, for High-temperature Service.

MSS

Manufactures Standardization Society of the Valve and Fittings: SP-25 Standard marking system for valves,fittings,flanges and unions. SP-44 Steel pipe line flanges. SP-47 Limiting dimensions of raised face flange gaskets. SP-61 Pressure testing of steel valves.

ASME

American Society of Mechanical Engineers: Section II Part A,B and C. Section V Non-destructive Tests. Section VIII Boiler and Pressure Vessel Code for Unfired Pressure Vessels, Divisions 1 and 2. Section IX Welding Qualifications.

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HOW TO ORDER

WALWORTH valves are designed by a catalog figure number which describe their main characteristics. The valve identification system shown herein is intended to assist our Customers to specify the valve required and avoid mistakes during manufacturing.

10”-5202-RF-UT-WCB-GO-NACEMR01-75

SIZE (INCH) 2" 2 1/2" 3" 4" 5" 6" 8" 10" 12" 14" 16" 18" 20" 22" 24" 28" 30" 36" 42" 48" 54" 60" 72"

TYPE OF VALVE & PRESSURE CLASS

5202= GATE 150# 5206= GATE 300# 5232= GATE 600# 5247= GATE 900# 5262= GATE 1500# 5275= GLOBE 150# 5281= GLOBE 300# 5295= GLOBE 600# 5301= GLOBE 900# 5308= GLOBE 1500# 5341= CHECK 150# 5344= CHECK 300# 5350= CHECK 600# 5353= CHECK 900# 5356= CHECK 1500#

ENDS RF= RAISED FACE RTJ= RING TYPE JOINT WE=BUTTWELD

SUPPLEMENTARY REQUIREMENTS GO= Gear operator. CW=Chainwheel operator. BS=Bare stem prepared for actuator. MOV= Motor operated valve. POV= Pneumatic operated valve. LD= Locking device. NACEMR-01-75. NACEMR-01-03 SP= Special Paint. SG= Special gasket. SPK= Special packing. VOC= Cerification of volatile organic compounds. BP=By-Pass LL=Live Load Packing LR=Lantern Ring LCW=Lever & Counter Weight SE=Stem extensions FS=Floor atands XX= Additional requirements.

SUPPLEMENTARY REQUIREMENTS TYPE OF OPERATION BASE MATERIAL TRIM ARRANGEMENT TYPE OF ENDS TYPE OF VALVE & PRESSURE CLASS AS PER FIGURE NUMBER SIZE OF THE VALVE IN INCHES

TRIM ARRANGEMENTS

BASE MATERIAL ASTM

18-8= API No. 2 310= API No. 3 HF= API No. 5 AAA= API No. 6 UT= API No. 8 A= API No. 9 18-8smo= API No. 10 AHF= API No. 11 3HF= API No. 12 A20= API No. 13 A20H= API No. 14 NUC= 410 + NUCALLOY 4HF= 304+304+ST6 4HF+HF= 304+ST6+ST6 304L= 304L+304L+304L 1HF= 316+ST21+ST21 3HF+HF= 316+ST6+ST6 3TC= 316/TC+TC+ST6 NOTE: TC= Tungsten Carbide. 316L= 316+316+316 3LHF= 316L+316L+ST6 3HFL= 316L+ST6+ST6 21HF= 317+ST6+ST6 317= 317+317+317 317H= 317+317+ST6 31L= 317L+317L+317L 317LS= 317L+317L+ST6 2HF= 321+321+ST6 321F= 321+ST6+ST6 321= 321+321+321 347HF= 347+ ST6+ST6 347= 347+347+347 347= 347+347+ST6 254HF= 31254+ST6+ST6 51H= 31803+ST6+ST6

CARBON STEELS: A216-WCB (C-Si) A216-WCC (C-Si) LOW ALLOY STEELS: A217-WC1 (C-1/2Mo) A217-WC5 (Cr-Mo) A217-WC6 (1 1/4%Cr-1/2Mo) ASTM A217-WC9(2 1/4 % Cr-1%Mo) ASTM A217-C5(5% Cr-1/2Mo) ASTM A217-C12(9%Cr-1%Mo) ASTM A217-C12-A(9%Cr-1%Mo-V-N) LOW CARBON AUSTENITIC STAINLESS STEELS: ASTM A351-CF3(18%Cr-8%Ni-0.03%C) ASTM A351-CF3M(18%Cr-12%Ni-2%Mo-0.03%C) ASTM A351-CG3M(18%Cr-12%Ni-3%Mo-0.03%C) AUSTENITIC STAINLESS STEELS: ASTM A351-CF8(18%Cr-8%Ni-0.08%C) ASTM A351-CF8M(18%Cr-12%Ni-2%Mo-0.08%C) ASTM A351-CF10(18%Cr-8%Ni-0.08%C) ASTM A351-CG8M(19%Cr-10%Ni-3%Mo-0.08%C) ASTM A351-CF8C(18%Cr-10%Ni-Cb-0.08%C) ASTM A351-CT15C(19%Cr-32%Ni-0.05A 0.15%C) SUPER AUSTENITIC STAINLESS STEELS: ASTM A351-CK20(25%Cr-20%Ni-0.04A 0.2%C) ASTM A351-CN7M(28%Ni-19%Cr-Cu-Mo- 0.7%C) ASTM A351-CN3M(21%Cr-24.5%Ni-6.5%Mo) ASTM A351-CN3MN(24%Ni-21%Cr-6%Mo-Cu-N-0.03%C) ASTM A351-CD4MCu(25.5%Cr-5.5%Ni-2%Mo) ASTM A351-CN2MCuN(.02C;19-23Cr;23-28Ni;4-5Mo;1-2Cu) LOW TEMPERATURE SERVICE CARBON STEELS: ASTM A352-LCB(0.03%C-0.6%Si-1%Mn) ASTM A352-LCC(0.025%C-0.6%Si-1%Mn) LOW TEMPERATURE SERVICE LOW ALLOYS STEELS: ASTM A352-LC2(0.025%C-2.5%Ni-0.65%Mn)

31803H= 31803+31803+ST6

ASTM A352-LC3(0.15%C-3.5%Ni-0.65%Mn)

T9= 17-4pH+TRIBALLOY 900+ TRIBALLOY 900

MARTENSITIC STAINLESS STEELS:

HC= Hc-276+Hc-276+Hc-276

ASTM A487-CA6NM(12.75%Cr-4%Ni-0.7%Mo

HCH= Hc-276+Hc-276+ST6

ASTM A487-CA15(12.75%Cr-1%Ni-1%Mo

UOP= MONELK500+MONEL 400+MONEL 400

NICKEL ALLOYS:

625= INCONEL 625+INCONEL 625+INCONEL 625

ASTM A494-M30C(67%Ni-30%Cu)

625HF= INCONEL 625+ST6+ST6

ASTM A494-M35-1(67%Ni-30%Cu)

8367HF+HF= AL6XN+ST6+ST6

ASTM A494-CZ100(95%Ni)

810T= INCOLOY 800H+INCOLOY 800H+INCOLOY800H

ASTM A494-CY40(75%Ni-15%Cr-8%Fe)

825= INCOLOY 825+INCOLOY825+INCOLOY 825

ASTM A494-CW2M(61%Ni-16%Mo-16%Cr)

23HF= INCOLOY 825+ST6+ST6

ASTM A494-N12MV(62%Ni-28%Mo-5%Fe)

HB= HASTELLOY B2+HASTELLOB2+HASTELLOY B2

ASTM A494-CW12MW(56%Ni-18%Mo-17%Cr-6%Fe)

HB= HASTELLOY B2+HASTELLOB2+HASTELLOY B2

ASTM A494-CW6M(56%Ni-19%Mo-18%Cr-2%Fe)

NOTE: ADDITIONAL BASE MATERIALS & TRIMS ARE AVAILABLE UPON REQUEST.

ASTM A494-CU5MCuC(42%Ni-21.5%Cr-3%Mo-2.3%Cu) ASTM A494-N7M(65%Ni-28%Mo-2%Fe) ASTM A494-CW6MC(60%Ni-22%Cr-9%Mo-3.5%Cb) DUPLEX STAINLESS STEELS: ASTM A351-CD7MCuN(20.5%Cr-29%Ni-2.5%Mo) ASTM A890 1A; CD4MCu(25.5%Cr-5.5%Ni-2%Mo) ASTM A890 2A; CE8MN(24%Cr-9.5%Ni-4%Mo) ASTM A890 3A; CD6MN(25.5%Cr-5%Ni-2.25%Mo) ASTM A890 3A; CD3MN(22%Cr-5%Ni-3%Mo-N)

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THE WALWORTH COMPANY GENERAL TERMS AND CONDITIONS

ACCEPTANCE: All quotations are for acceptance within 30 days from date of quotation unless extended in writing. In the event a purchase order is placed after this period of time, the WALWORTH Company reserves the right to requote base prices of all valves offered. All orders and contracts are subject to credit approval and acceptance by the WALWORTH Company.

payments according to the terms of the contract, Seller may, in addition to and not in limitation of its other rights and remedies, at its option, cancel all or any part of Buyer’s incomplete contracts with Seller, or may defer shipments of deliveries under Buyer’s contracts with Seller except upon receipt of satisfactory security or for cash shipment.

FREIGHT: When prices are f.o.b. point of shipment - no freight allowance - we will attempt to route shipments in the method which will result in the lowest cost unless otherwise instructed. All shipments will be freight charges collect except when stipulated on the purchase order, in which case you will be invoiced for all transportation charges. Delivery of material to a common carrier shall be considered to be delivery to Buyer and shall be at Buyer’s risk thereafter. Claims of loss of or damage to material in transit shall be filed by the Buyer directly with the carrier.

All schedule of shipments are estimated as closely as possible and Seller will use its best efforts to ship within the time scheduled, but does not guarantee to do so. Schedules commence with the date Seller receives authorization to proceed with the order, subject to the provisions of the next sentence. The order will not be released for manufacture until complete specifications and approved drawings (if drawing approval is required) are received at the plant of manufacturer and the estimated schedule of shipment will commence with the date of such receipt.

PRICES: There will be added to all prices quoted sales, use, occupation or any other excise or similar tax which Seller may be required to pay or collect on or in connection with the sale. Seller shall be established by Federal, State or other government regulation with respect to the product(s) topped by the order which shall be lower than the price(s) specified in the order.

Seller shall not be liable for any direct, indirect or consequential damage or loss caused by any delay in delivery, regardless of the cause of delay.

ESCALATION TERMS: Prices shown in this price schedule reflect the costs in effect at the time of publication. These prices will remain firm on all products with a quoted delivery of twenty–six (26) weeks or less. On products which have a scheduled delivery of more than twenty-six (26) weeks, the goods will be invoiced based on the applicable price sheet in effect at the time of shipment. In no event will the invoiced price be less than the price originally quoted. PURCHASED COMPONENTS: (i.e. motors, gearing, etc.) Prices are quoted on the supplier’s price in effect at the time of quotation. Actual invoice price will be adjusted in accordance with the supplier’s escalation policy. DIFFERED SHIPMENTS: If for any reason the customer desires to delay shipments more than 30 days after manufacturing is complete, or to place a on hold or stop to the order during the manufacturing cycle, The WALWORTH Company reserves the right to consider the order cancelled and to invoke cancellation charges per the schedule bellow. CANCELLATION: After order acceptance by WALWORTH, items or completed orders may be cancelled and Buyer will be charged for work performed, based on the following schedule: - Five percent (5%) of prices of stock items. - Ten percent (10%) of price of stock items ordered in quantities which exceed normal inventory levels. - Five percent (5%) of prices prior to drawing submittal on made-to-order items. - 15% after drawing approval, but prior to the start of castings. - 30% to 50% during casting cycle, depending on the state of completion. - 55% to 75% during machining and assembly operations, depending on the state of completion. -100% after final assembly and test. REMITTANCES: Remittances must be made to the address indicated on the invoice. CREDIT TERMS: As quoted. Invoices on balances overdue will be subject to a service charge of 1 1/2 % per month on such indebtedness. DELIVERIES: Shipments and deliveries shall at all times be subject to the approval of Seller’s Credit Department. If the Buyer shall fail to make any

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Without limiting the generality of the foregoing, Seller assumes no responsibility for delays in delivery resulting from fire, flood, accidents, riots, strikes, transportation delays, labor or material shortages, existing or future laws, acts of any governmental authority, or any other cause beyond Seller’s control. Items offered from stock are subject to prior sale. INSPECTION: Final inspection and acceptance of products must be made at the plant of manufacture, unless otherwise provided in the order and/ or in agreed upon specifications. Prices do not include charges for special tests or inspections performed at the request of the Buyer, unless called for in the order and/or in agreed upon specifications. RETURNS: Permission in writing and return tagging instructions must be obtained from Seller before any goods returned for credit or adjustment will be accepted. Where returned goods are accepted, a minimum charge of 25% of the invoice price will be made, plus freight from both directions and costs of reconditioning the material for resale as new. WARRANTY: Seller will replace without charge or refund the purchase price of products manufactured by Seller which prove to be defective in the material or workmanship, provided in each case that the product is properly installed and is used in the service for which Seller recommends it and that a written claim, specifying the alleged defect, is presented to Seller. Seller shall in no event be responsible for (a) claims for labor, expenses or other damages occasioned by defective products or (b) for consequences or secondary damages. THE WARRANTY STATED IN THIS PARAGRAPH IS IN LIEU OF ALL OTHER WARRANTIES, EITHER EXPRESSED OR IMPLIED. WITH RESPECT TO WARRANTIES, THIS PARAGRAPH STATES BUYER’S EXCLUSIVE REMEDY AND SELLER’S EXCLUSIVE LIABILITY. DESIGN, ETC: Seller reserves the right to change design, materials or specifications without notice. There will be a charge for modifying an order after it has been entered when such change or modification results in additional engineering or clerical work for either The WALWORTH Company or our suppliers. MINIMUM CHARGE: Orders totaling less than $100.00 net will be billed at a minimum charge of $100.00. Repair parts will be billed at a minimum charge of $50.00. NOTE: We reserve the right to correct obvious clerical errors in quotations, invoices, and other contracts.

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www.walworthmx.com

MEXICO Industrial de Válvulas, S.A. de C.V. Av. de la Industria Lote 16 Fracc. Industrial El Trébol, C.P. 54600 Tepotzotlán, Estado de México Phone: (52 55) 5899 1700 Fax: (52 55) 5876 0156 e-mail: [email protected]

USA TWC The Valve Company Authorized Distributor 13641 Dublin Court, Stafford, Texas 77477 Phone: (713) 996 9696 Toll Free: (1 800) 697 1842 Fax: (713) 996 9669 e-mail: [email protected] www.twcousa.com

SAFETY AND RELIEF BRONZE VALVES | 2011 EDITION | VERSION 1