ASME B16.37-1980 Hydrostatic Testing of Control Valves

O

AMERICAN NATIONAL STANDARD

Hydrostatic Testing of Control Valves ANSI B16.37 - 1980

PUBLISHED B Y

THE

AMERICAN

SOCIETY

United Engineering Center

COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services

OF

M E C H A N I C A L ENGINEERS

3 4 5 East 4 7 t h Street

N e w York, N. Y. 1 O 0 1 7

Date of Issuance: December 15,1980

No part of this document may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher.

Copyright O 1980 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A.

a COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services

FOREWORD

In 1974 it became apparent that hydrostatic testing of control valves was inadequately covered in existing standards. The following standards contained some requirements perfaining to hydrostatic testing of control valves: ANSI B16.34-1973, MSS SP-61-1961, SAMA PMC 23-2-1971, API Std. 6D - March 1971, API 598-1970 (2nd ed.) and Section III of the ASME Boiler and Pressure Vessel Code. These standards were not entirely consistent with each other. Subcommittee O (Control Valves) of American National Standards Committee B16 was asked to remedy this situation. Subgroup 4 was formed to prepare a draft of a more comprehensive hydrostatic test standard which specifically addresses control valves in contrast to general purpose valves. The first draft of this standard was prepared in October 1974. Five and a half years were required to bring this standard through initial development and fmal letter ballot of the Standards Committee. Following resolution of problems, the Standards Committee approved the proposal. Approval as an American National Standard was granted on July 17,1980.

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Since this standard contains some information from other standards, primarily ANSI B16.34, it may require updating from time to time whenever the source information changes. The user may consult the latest editions of the reference standards for current information.

All requests for interpretations or suggestions for revision should be sent to the Administrative Secretary B16, The American Society of Mechanical Engineers, United Engineering Center, 345 East 47th Street, New York, N.Y. 10017.

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AMERICAN NATIONAL STANDARDS COMMITTEE B I 6 Standardization of Valves, Flanges, Fittings, Gaskets and Valve Actuators

(The following is the roster of the Committee a t the time of approval of this Standard)

OFFICERS D. K. Greenwald, Vice Chairman Alan Bagner, Administrative Secretary

W. G. Canham, Chairman ñ. W, Warrick, Secretary

STANDARDS COMMITTEE AIR CONDITIONING AND REFRIGERATION INSTITUTE M. W. Garland, Frick Company, Waynesboro, Pennsylvania J. C. Inch, Mueller Brass Company, Hartsville, Tennessee R. J. Evans, Alternate, Air Conditioning and Refrigeration Institute, Arlington, Virginia AMERICAN BOAT AND YACHT COUNCIL G. J. Lippmann, American Boat and Yacht Council, New York, New York AMERICAN BUREAU OF SHIPPING J. A. Osterberg, American Bureau of Shipping, New York, New York AMERICAN GAS ASSOCIATION R. E. Miller, Columbia Gas Distribution Companies, Columbus, Ohio W. B. Pizzini, Alternate, American Gas Association, Arlington, Virginia AMËRICAN PETROLEUM INSTITUTE Division of Refining C. M. Vogrin, Mobil Research and Development Corporation, Princeton, New Jersey Division of Production Dale Wilson, Mobil Pipeline Company, Dallas, Texas W. S. Wimberley, Alternate, American Petroleum Institute, Dallas, Texas AMERICAN PIPE FITTINGS ASSOCIATION M/: C. Matlock, Stockham Valves and Fittings, Birmingham, Alabama AMERICAN SOCIETY FOR TESTING AND MATERIALS Robert Koester, The Wm. Powell Company, Cincinnati, Ohio AMERICAN SOCIETY OF C M L ENGINEERS K. E. Britain, Consultant, Houston, Texas K. J. Zitomer, Alternate, Philadelphia Water Department, Philadelphia, Pennsylvania *AMERICAN SOCIETY OF MECHANICAL ENGINEERS, THE J. E. Latran, Consultant, Glen Ellyn, Illinois B. H. Leonard, Jr., Consultant, Atherton, California J. N. Robinson, Oak Ridge National Laboratory, Union Carbide Corporation, Oak Ridge, Tennessee E. C. ßodabaugh, Batteile Memorial Institute, Columbus, Ohio J. O. Schuyler, Pacific Gas and Electric Company, San Francisco, California R. V. Warrick, Manufacturers Standardization Society of the Valve and Fittings Industry, Arlington, Virginia AMERICAN SOCIETY OF SANITARY ENGINEERS J. C. Church, Consultant, Mamaroneck, New York G. R. Jerus, Meyer, Strong and Jones, New York, New York *Co-Secretariat V

COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services

ASME BLb.37 B O

0757670 0072807 b

AMERICAN WATER WORKS ASSOCIATION W. J. Burns, Department of Water and Power, Los Angeles, California M. C. Todd, Bureau of Engineering, Chicago, Illinois AMERICAN WELDING SOCIETY R. Giambelluca, C. F. Braun and Company, Alhambra, California ASSOCIATION OF WELLHEAD EQUIPMENT MANUFACTURERS A. F. Rhodes, McEvoy Oilfield Equipment Company, Houston, Texas CAST IRON PIPE RESEARCH ASSOCIATION T. F. Stroud, Cast Iron Pipe Research Association, Oak Brook, Illinois COPPER DEVELOPMENT ASSOCIATION Arthur Cohen, Copper Development Association, Incorporated, New York, New York ELECTRIC LIGHT AND POWER GROUP F. G. Doar, Southern Services, Inc., Birmingham, Alabama G. A. Olson, Alternate, Edison Electric Institute, Washington, D.C. FLUID CONTROLS INSTITUTE Paul Wing, Masoneiian International, Incorporated, Norwood, Massachusetts FLUID SEALING ASSOCIATION J. B. Painter, Condren Corporation, North Brunswick, New'Jersey GENERAL SERVICES ADMINISTRATION i . S. Falcone, General Services Administration, Washington, D.C. C. i . Carter, Alternate, General Services Administration, Washington, D.C. HYDRAULIC INSTITUTE, THE J. T. Strapach, Goulds Pump, Incorporated, Seneca Falls, New York INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS L. T. Test, General Electric Company, San Jose, California ' INSTRUMENT SOCIETY O F AMERICA O. P. iovett, Jr., E.I. DuPont de Nemours and Company, Incorporated, Wilmington, Delaware C. A. Prior, E. I. DuPont de Nemours and Company, Incorporated, Wilmington, Delaware *MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTINGS INDUSTRY P. H. Awtrey, Walworîh Company, Valley Forge, Pennsylvania R. E. Benson, Tube Turns, Louisville, Kentucky F. G. Burr, Stockham Valves and Fittings, Birmingham, Alabama H. W. Hope, Jr., Jenkins Bros., Bridgeport, Connecticut W. N. Mciean, Crane Company, Chicago, Illinois B. J. Milleville, Rockwell International, Pittsburgh, Pennsylvania R. E. Sanctuary, Worcester Valve Company, Manchester, New Hampshire MANUFACTURING CHEMISTS ASSOCIATION W. G. Canham, Monsanto Company, St. Louis, Missouri F. X. Schoen, Union Carbide Corporation, South Charleston, West Virginia *MECHANICAL CONTRACTORS ASSOCIATION OF AMERICA Representative-Vacant J. ß. Noble, Alternate, Mechanical Contractors Association of America, Washington, D.C. NATIONAL ASSOCIATION OF PLUMBING-HEATINGCOOLING CONTRACTORS i? E. . M i t e , National Association of Plumbing-Heating-Cooling Contractors, Washington, D.C. P. J. Higgins, Alternate, National Association of Plumbing-Heating-Cooling Contractors, Washington, D.C. NATIONAL AUTOMATIC SPRINKLER & FIRE CONTROL ASSOCIATION R. E. Hollister, The Viking Corporation, Hastings, Michigan *Co-Secretariat

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NEW ENGLAND WATER WORKS ASSOCIATION C. E. Cannon, Coffin and Richardson, incorporated, Boston, Massachusetts L. i . Peters, Alternate, Weston and Sampson, Engineers, Boston, Massachusetts PIPE FABRICATION INSTITUTE J. S. Cole, ITT Grinnell Industrial Piping, Incorporafed, Kernersville, North Carolina RUBBER MANUFACTURERS ASSOCIATION R. G. ßamsdell, Parker Seal Company, Culver City, California Will;am Johnson, Alternate, Goshen Rubber Company, Incorporated, Goshen, Indiana SCIENTIFIC APPARATUS MAKERS ASSOCIATION D. J. Gaffney, Fisher Governor Company, Marshalltown, Iowa SOCIETY OF THE PLASTICS INDUSTRY, THE S. f Klamke, Plastics Pipe Institute, New York, New York UNDERWRITERS LABORATORIES M. R. Suchomel, Underwriters Laboratories, Northbrook, Illinois UNITED STATES COAST GUARD J. bK Kirne, United States Coast Guard, Washington, D.C. UNITED STATES DEPARTMENT OF THE ARMY ß. L. Buttery, U.S. Army Mobility Equipment Research and Development Center, Forf Belvoir, Virginia UNITED STATES DEPARTMENT OF THE NAVY J. J. DiCola, Naval Ships Engineering Center, Washington, D.C. VALVE MANUFACTURERS ASSOCIATION J. O. Hendrickson, Valve Manufacturers Association, McLean, Virginia W. H. Hopf, Alternate, Walworth Company, Valley Forge, Pennsylvania INDLVIDUAL MEMBER D. K. Greenwald, Ladish Co., Cudahy, Wisconsin

PERSONNEL OF SUBCOMMITTEE O ON CONTROL VALVES O. P. Lovett, Jr., Chairman, E. I. DuPont de Nemours, Incorporated, Wiimington, Delaware C. A. Prior, Vice Chairman, E. I. DuPont de Nemours, Incorporafed, Wilmington, Delaware M. T. Yothers, Secretary, Instrument Society of America, Pittsburgh, Pennsylvania John Bacon, Mobay Chemicat Corporation, Pittsburgh, Pennsylvania Guy Borden, Bechtel Power Corporation, Houston, Texas ß. i? Brodin, . Fisher Controls Company, Marshalltown, Iowa L. ß. Driskell. Dravo Corporation, Pittsburgh, Pennsylvania A. J Hanssen, I ï T Hammel-Dahl/Conoflow, Warwick, Rhode Island H. R. Nickerson, Resistoflex Corporation, Roseland, New Jersey Gilbert Richards, Jordan Valve Company, Cincinnati, Ohio i . O. Seger, Wilíis Oil Tool Company, Long Beach, California G. F. Stiles, Fisher Controls Company, Marshalltown, Iowa W. C. Weidman, Gilberf Associates, Incorporated, Reading, Pennsylvania Paul Wing, Masoneilan International, Incorporated, Norwood, Massachusetts

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CONTENTS Foreword.........................................................

Page iii

Standards Committee Roster ............................................

v

1. Scope

........................................................ 2. Definitions.....................................................

1 1

3 . Test Fixtures and Instrumentation ..................................... 4. Test Requirements................................................. 5 . Testprocedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6. Acceptance Standards .............................................

2

7 . Test Pressures ....................................................

2

1

1 2

Tables

.

1 List of Material Specifications ........................................ 2. Hydrostatic Sheii Test Pressures @Sig) ...................................

Annex A . Table A2 . Hydrostatic Shell Test Pressure (bar gage) Annex B . References .........................

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9

ANSI 616.37-1980

AMERICAN NATIONAL STANDARD

HYDROSTATIC TESTING OF CONTROL VALVES

are used, the seal point shall be as close to the weld end as practical without overstressing the weld preparation.

1 SCOPE 1.1 This standard applies to control valves having bodies, bonnets and cover plates made of carbon steel, low alloy and high alloy (stainless) steel, cast iron and ductile iron.

3.2 Pressure measuring instruments used in testing shall be of the indicating or recording type.

1.2 It establishes requirements and definitions for standard hydrostatic shell testing of Control Valves by the valve manufacturer to prove the structural integrity and leak tightness of the valve pressure retaining parts including any closure parts such as the valve body to bonnet joint and packing leakoff connection but excluding packings, bellows or other moving seals. Bellows or similar moving stem seals shall be pressure tested after their assembly at a pressure to be agreed upon between the valve manufacturer and the purchaser. Internally lined valves and pneumatic or hydraulic actuators are not subject to the requirements of this standard.

3.3 It shall be the valve manufacturer’s responsibility to maintain the accuracy of the pressure measuring instruments. 3.4 It is recommended that gages and recording instruments have a range of approximately double but not more than 4 times the test pressure. 4 TEST REQUIREMENTS 4.1 The control valve or valve without an actuator, must be complete before hydrostatic shell testing, except as permitted in 4.2,4.3 and 4.4. 4.2 It is permissible to disassemble the valve after hydrostatic shell testing provided that new gaskets or seals used to reassemble the valve are of the same kind and size and the same studs, nuts and torquing procedure are used as in the tested assembly or steps are taken to assure the same resulting bolt loads. In either case, a leak test at lower than hydrostatic shell test pressure shall be performed to assure proper gasket installation.

2 DEFINITIONS 2.1 Control Valve

A control valve is a valve with a pneumatic, hydraulic, electric (excluding solenoids) or any other externally powered actuator that automatically fully or partially opens or closes the valve to a position dictated by a signal transmitted from a controlling instrument.

3 TEST FIXTURES AND INSTRUMENTATION

4 3 AU cavities pressurized in service shall be simultaneously subjected to the hydrostatic shell test pressure. Moving stem seals such as bellows, diaphragms, stem packing, etc., which may be damaged by the hydrostatic shell test pressure or trim parts which do not affect the pressure boundary may be removed.

3.1 Test furtures include, but are not limited to, plugs with tie-bars and tie-rods, hydraulic presses, plugs or flanges attached to the pipe connections, bosses or lugs on the valve, and expandable rubber plugs. For butt welding end valves when end plugs

4.4 Valves with welded-on nipples, reducers and/or expanders shall be hydrostatically shell tested in accordance with paragraph 4.4 (a) unless paragraphs 4.4 (b), (c), or (d) are agreed upon between the valve manufacturer and the purchaser.

2.2 Test Fixture

A test furture is a device to close off the pipe connections and/or moving stem seal areas of the Control Valve to allow pressurization for hydrostatic shell testing.

1

COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services

..

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ASME B 1 6 * 3 7 8 0

= 0757b70

0072811 8

AMERICAN NATIONAL STANDARD HYDROSTATIC TESTING OF CONTROL VALVES

ANSI B16.37-1980

(a) Hydrostatically shell test the valve alone with the appropriate pressure for its class and do not retest after welding on the nipples, reducers and/or expanders. (b) Hydrostatically shell test the valve alone with the appropriate pressure for its class and retest the valve assembly after welding-on the nipples, reducers and/or expanders with the pressure in accordance with the specification applicable to the nipples, reducers and/or expanders. The purchaser shall provide the design pressure and temperature and the applicable specification to the valve manufacturer.

5 TEST PROCEDURES 5.1 After filling the valve with water, which may

contain a corrosion inhibitor, or with kerosene or with other suitable liquid provided such liquid has a viscosity not greater than water, and venting ali air, each valve shall be pressurized to no less than the pressures given in Table 2 or A2. 5.2 The minimum duration of test pressure before start of inspection shall be as follows:

15 seconds for valves NPS 2 and smaller, 1 minute for valves NF'S 2%-8,3 minutes for valves NF'S 10 and larger.

(c) Hydrostatically shell test the valve including the welded-on nipples, reducers and/or expanders with the pressure in accordance with the specification applicable to the nipples, reducers and/or expanders. The valve nameplate and required valve body marking must then indicate the pressure and temperature limit as determined by the nipples, reducers and/or expanders. (d) Hydrostatically shell test the valve including the welded-on nipples, reducers and/or expanders with the pressure in accordance with this standard, provided that the nipples, reducers and/or expanders are adequate for that pressure.

5.3 The temperature of the test liquid shall not ex-

ceed 125 F"(52'C). 6 ACCEPTANCE STANDARDS 6.1 Any visually detectable weeping or leakage through the pressure boundary walls that are part of the valve body assembly shall be cause for rejection. Leakage through the static seals and gasketed joints is not permitted unless specifically allowed by the design specifications. 6.2 Distortion due to hydrostatic shell testing which impairs satisfactory functional operation of the valve shall be cause for rejection.

4.5 The valve shall not be painted before hydrostatic shell testing but may be surface treated provided such treatment does not plug or obscure hydrostatic leaks. If valve parts are to be painted for storage they shall be hydrostatically shell tested before painting provided the fully assembled valve is again tested to prove the leak tightness of the body to bonnet joint. If hydrostatic shell tests in the presence of purchaser's representative are specified, painted valves may be retested without removal of the paint, unless otherwise agreed to by the valve manufacturer and purchaser. Wrought welded-on nipples, expanders and/or reducers need not have their protective coating removed for hydrostatic shell testing.

7 TEST PRESSURES 7.1 Hydrostatic shell test pressures for steel valves are calculated by multiplying the 100°F (38°C) working pressures by 1.5 and rounding off the next higher 25 psig increment in accordance with ANSI B16.34.

7.2 Hydrostatic shell test pressures for cast iron valves shall be in accordance with ANSI B16.1. 7.3 Hydrostatic shell test pressures for nodular (ductile) iron shall be in accordance with ANSI B31.1, Appendix E or ANSI B3 1.3. 7.4 The metric equivalents of all test pressures in Table 2 are given in Annex A (Table A2) and are calculated by converting 1.5 times the 100°F (38°C) working pressure in psig to bar and then rounding off to the next higher bar increment except for values below 10 bar which are rounded off to the next higher 0.1 bar increment(a).

4.6 The valve shall not be seated on the main seat or

on the back seat during the hydrostatic shell test. 4.7 If a valve is dual pressure rated (inlet rating higher than outlet rating) it may be necessary to separate the high pressure portion of the valve from the low pressure portion with a temporary barrier and test each portion with its respective pressure.

(a)

2

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1bar = 100kPa= 100,000 Pa = 0.1 MPa = 14,5038 psi

AM ER ICAN NATIONAL STANDARD HYDROSTATIC TESTING OF CONTROL VALVES

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AMERICAN NATIONAL STANDARD HYDROSTATIC TESTING OF CONTROL VALVES

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ANNEX B

REFERENCES This Annex is an integral part of American National Standard B I 6.37 which is placed after the main text for convenience.

List of standards and specification referenced in sfandard showing thë year of approval. ASME Publications

ANSI B16.1-1975

Cast Iron Pipe Flanges and Flanged Fittings, Class 25,125,250 and 800

ANSI B16.34-1977

Steel Valves, Flanged and Buttwelding End

ANSI B31.1-1977

Power Piping

ANSI B31.3-1976

Chemical Plant and Petroleum Refinery Piping

ASTM Publications

ASTM A105-77

Specification for Forgings, Carbon Steel, for Piping Components

ASTM A106-77

Specification for Seamless Carbon Steel Pipe for High-Temperature Service

ASTM A126-73

Specification for Gray Iron Castings for Valves, Flanges, and Pipe Fitfings.

ASTM A155-75

Specification for Electric-Fusion-Welded Steel Pipe for High-pressure Service

ASTM A182-77a

Specification for Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fittings and Valves and Parts for High-Temperature Service

ASTM A203-77

Specification for Pressure Vessel Plates, Alloy Steel, Nickel

ASTM A20474a

Specification for Pressure Vessel Plates, Alloy Steel, Molybdenum

ASTM A2 16-77

Specification for Carbon-Steel Castings Suitable for Fusion Welding for High-Temperature Service

ASTM A217-77a

Specification for Martensitic Stainless Steel and Alloy Steel Castings for PressureContaining Parts Suitable for High-Temperature Service

ASTM A240-77

Specification for Heat-Resisting Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip for Fusion-Welded Unfired Pressure Vessels

ASTM A302-77

Specification for Pressure Vessel Plates, Alloy Steel, Manganese-Molybdenum and Manganese-Molybdenum-Nickel

ASTM A3 12-77

Specification for Seamless and Welded Austenitic Stainless Steel Pipe

ASTM A335-76

Specification for Seamless Ferritic Alloy Steel Pipe for High-Temperature Service

ASTM A350-77a

Specification for Forgings, Carbon and Low-Alloy Steel Requiring Notch Toughness Testing for Piping Componenfs

ASTM A35 1-77

Specificafion for Austenitic Steel Castings for High-Temperature Service

ASTM A352-77

Specification for Ferritic Steel Castings for Pressure Containing Parts Suitable for Low-Temperature Service

ASTM A35 8-77a

Specification for Electric-Fusion-Welded Austenitic Chromium-Nickel Alloy Steel Pipe for High-Temperature Service 9

COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services

ASME B 3 b - 3 7 80

0757b70 0 0 7 2 8 3 7 2

AMERICAN NATIONAL STANDARD HYDROSTATIC TESTING OF CONTROL VALVES

ANSI 616.37-1980

ASTM A369-76

Specification for Carbon and Ferritic Alloy Steel Forged and Bored Pipe for HighTemperature Service

ASTM A376-77

Specification for Seamless Austenitic Steel Pipe for &$-Temperature tion Service

ASTM A387-77b

Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum

ASTM A395-77

Specification for Ferritic Ductile Iron Pressure Retaining Castings for Use at Elevated Temperatures

ASTM A430-77 .

Specification for Austenitic Steel Forged and Bored Pipe for High-Temperature Service

ASTM A479-77

Specification for Stainless and Heat-Resisting Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels

ASTM A5 15-74b

Specification for Pressure Vessel Plates, Carbon Steel, for Intermediate and HigherTemperature Service

ASTM A5 16-77

Specification for Pressure Vessel Plates, Carbon Steel, for Moderate and LowerTemperature Service

ASTM A537-77

Specification for Pressure Vessel Plates, Heat-Treated, Carbon-Managanese-Silicon Steel

ASTM A675-77

Specification for Steel Bars and Bar Size Shapes, Carbon, Hot-Rolled, Special Quality, Subject to Mechanical Property Requirements

Central-Sta-

Publications of the following organizations appear on the preceding list: ASME

The American Society of Mechanical Engineers 345 East 47th Street, New York, New York 10017

ASTM

American Society for Testing and Materials 1916 Race Street, Philadelphia, Pennsylvania 19103

Publications appearing on the preceding list which have been approved as American National Standards may also be obtained from: ANSI

American National Standards Institute, Inc. 1430 Broadway, New York, New York 10018

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AMERICAN NATIONAL STANDARDS FOR PIPING. PIPE FLANGES. FITTINGS. AND VALVES (Published by The American Society of Mechanical Engineers) TITLE OF STANDARD

Pipe Threads (Except Dryseal) 1968 ................................................. B2.1 Dryseal Pipe Threads. 1968 ....................................................... B2.2 .B1 6.1 Cast Iron Pipe Flanges and Flanged Fittings. Class 25.125. 250 and 800.1975 .................... Malleable-Iron Threaded Fittings. Class 150 and 300. 1977 ................................. .B16.3 Cast Iron Threaded Fittings. Class 125 and 250. 1977 .................................... .B16.4 Steel Pipe Flanges and Flanged Fittings. Including Ratings for Class 150.300.400.600.900. 1500. and 2500. 1977 ..................................................... .B16.5 B 16.9 Factory-Made Wrought Steel Buttwelding Fittings. 1978.................................... .B16.10 Face-to-Face and End-to-End Dimensions of Ferrous Valves. 1973 ........................... Forged Steel Fittings. Socket-Welding and Threadad~l980................................ .B16.11 Cast Iron Threaded Drainage Fittings. 1977 .......................................... .B16.12 .B1 6.14 Ferrous Pipe Plugs. Bushings. and Locknuts with Pipe Threads. 1977 ......................... Cast Bronze Threaded Fittings. Class 125 and 250.1978 .................................. 'B16.15 Cast Copper Alloy Solder Joint Pressure Fittings. 1978. .................................. .B1 6.18 Ring-Joint Gaskets and Grooves for Steel Pipe Flanges. 1973............................... .B16.20 Nonmetallic Flat Gaskets for Pipe.Flanges. i978 ........................................ .B16.21 Wrought Copper and Copper AUoy Solder Joint Pressure Fittings. 1980........................ .B16.22 Cast Copper Alloy Solder Joint Drainage Fittings. DWV. 1976 .............................. .B16.23 Bronze Pipe Flanges and Flanged Fittings. Class 150 and 300. 1979 .......................... .B16.24 Buttwelding Ends. 1979 ........................................................ .B1 6.25 Cast Copper Alloy Fittings for Flared Copper Tubes. 1975 ................................ B16.26 Wrought Steel Buttwelding Short Radius Elbows and Returns. 1978 .......................... .Bï 6.28 Wrought Copper and Wrought Copper Alloy Solder Joint Drainage Fittings. DWV. 1980. . . . . . . . . . . . . .B16.29 Non-Ferrous Pipe Flanges. 150.300.400.600.900. 1500 and 2500 lb. 1971 .................... .B1 6.31 .B16.32 Cast Copper Alloy Solder Joint Fittings for Sovent Drainage Systems. 1979 ..................... Small Manually Operated Metallic Gas Valves in Gas Distribution Systems Whose Maximum Allowable Operating Pressure Does Not Exceed 60 psig or 125 psig. 1973 . . . . . . . . . . . . . . . . . . .B1 6.33 Steel Valves. Flanged. and Buttwelding End. 1977....................................... B 16.34 Steel Orifice Flanges. Class 300.400.600.900, 1500 and 2500. 1975 and 1979 . . . . . . . . . . B16.36 and B16.36a .B1 6.37 Hydrostatic Testing of Control Valves. 1980.......................................... Large Manually Operated Metallic Gas Valves in Gas Distribution Systems Whose Maximum . . . . . . . . . . . Allowable Operating Pressure Does Not Exceed 125 psig (8.6 bar. gage). 1978 . . . . . . . . . . . . . . . ,B16.38 .B16.39 Malleable Iron 'Ihreaded Pipe Unions. Class 150. 250 and 300. 1977 ......................... Manually Operated 'kermoplastic Gas Shut-Offs and Valves in Distribution Systems. 1977 . . . . . . . . . . .B16.40 .B16.42 Ductile Iron Pipe Flanges and Flanged Fittings. Class 150 and 300.1979 ....................... Powerpiping. 1980 ............................................................ B31.1 Fuel Gas Piping. 1968 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B3 1.2 Chemical Plant and Petroleum Refinery Piping. 1976 ..................................... .B3 1.3 Liquid Petroleum Transportation Piping Systems. 1979 .................................... B3 1.4 Refrigeration Piping. 1974 ...................................................... .B3 1.5 Gas Transmission and Distribution Piping Systems. 1975 ................................... B3 1.8 ASME Guide for Gas Transmission and Distribution Piping Systems. 1980 (Not an American National Standard) Welded and Seamless Wrought Steel Pipe. 1979........................................ .B36.10 Stainless Steel Pipe. 1976 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B3 6.19 Self-operated and Power-Operated Safety-Related Valves. Functional Specification Standard. 1975 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .N278.1 The ASME Publication Catalog shows a complete list of all Standards published by the Society. The catalog. and binders for holding these Standards. are available upon request.

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