asme b16.40-85

c."-="-a

IND-STD ASME 816-40-85 NOTICE L 48 9999998 O005306 8 m"

I NOTICE OF I i ADOPTION I

ADOPTION NOTICE 1 17 September 1991 for

October 31, 1985 ASME B16.40-1985

ASME B16.40-1985 was adopted on 17 September 1991 and is approved for use by the Department of Defense (DoD). Both the American Society of Mechanical Engineers and American National Standards Institute have furnished clearances required by existing regulations. Copies of this document are stocked at the Standardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094, for issue to DoD activities only. All other requestors must obtain copies from:

The American Society of Mechanical Engineers United Engineering Center 345 East 47th Street New York, NY 10017

or

American National Standards Institute 1430 Broadway New York, NY 10018

Title of Document: Manually Operated Thermoplastic Gas Shutoffs and Valves in Gas Distribution Systems

Date of Specific fssue Adopted: October 31, 1985

Releasing Non-Government Standards Body: The American Society of Mechanical Engineers

Custodian: Navy - YD Military Coordinating Activity: Navy - M

(Project 4820-0616)

FSC 4820

DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.

COPYRIGHT American Society of Mechanical EngineersLicensed by Information Handling ServicesCOPYRIGHT American Society of Mechanical EngineersLicensed by Information Handling Services

A N A M E R I C A N N A T I O N A L S T A N D A R D

Manually Operated Thermoplastic Gas. Shutoffs

and Valves in Gas Distribution Systems

ANSIIASME B I 6.40-1 985 (REVISION OF ANSI 816.40-1977)

SPONSORED AND PUBLISHED BY

T H E A M E R I C A N S O C I E T Y O F M E C H A N I C A L E N G I N E E R S

United Engineering Center 3 4 5 East 47th Street New York, N. Y. 1 O01 7


Date of Issuance: October 31, 1985

The 1985 Edition of this Standard is being issued with an automatic addenda subscription service. The use of an addenda allows revisions made in response t o public review comments or committee actions t o be published on a regular yearly basis; revisions published in addenda will become effective 6 months after the Date of Issuance of the addenda. The next edition of this Standard is scheduled for publication in 1988.

ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard. The interpretations will be included with the abve addenda service. Interpretations are not part of the addenda to the Standard.

This code or standard was developed under procedures accredited as meeting the criteria for American National Standards. The Consensus Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or standard was made available for public review and comment which provides an opportunity for additional public input from industry, academia, regulatory agencies, and the public-at-large.

ASME does not "approve," "rate," or "endorse" any item, construction, proprietary device, or activity.

ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable Letters Patent, nor assume any such liability. Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility.

Participation by federal agency representative(?,) or person(s) affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard.

ASME accepts responsibility for only those interpretations issued in accordance with governing ASME procedures and policies which preclude the issuance of interpretations by individual volunteers.

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 1985 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS

All Rights Reserved Printed in U.S.A.


FOREWORD

(This Foreword is not part f ANSVASME 816.40-1985.)

The B 16 Standards Committee was organized in the spring of 1920 and held its organiza- tional meeting on November 21 of that year. The group operated as a Sectional Committee (later redesignated as a Standards Committee) under the authorization of the American En- gineering Standards Committee [subsequently named American Standards Association, United States of America Standards Institute, and now American National Standards Insti- tute (ANSI)]. Sponsors for the group were the American Society of Mechanical Engineers, Manufacturers Standardization Society of the Valve and Fittings Industry, and the Heating and Piping Contractors National Association (later the Mechanical Contractors Associa- tion of America).

The American Gas Association determined that standardization of gas valves used in distribution systems was desirable and needed. The A.G.A. Task Committee onstandards for Valves and Shutoffs was formed and development work commencedin 1958. In 1968 it was determined that a more acceptable document would result if approval were gained from ANSI, and to facilitate such action the A.G.A. Committee became Subcommittee No. 13 of the B16 activity. This B16 group was later renamed Subcommittee L, which is its current designation.

The first standard developed by Subcommittee L was B16.33. The B16.38 standard was subsequently developed to cover larger sizes of gas valves and shutoffs. Since about 1965, the increased use of plastic piping in gas distribution systems brought with it the need for valves and shutoffs of compatible material. To fill this need, the present standard was developed and initially appeared as ANSI B16.40-1977. Subcommittee L began review of this document in 1982.

Editorial changes were made throughout the text and tables to bring the format in line with the rest of the B16 series of standards and to clarify the intent of this Standard. Revi- sions include addition of rules for allowable pressure at temperatures above 74 F for valves of certain materials, updating of reference standards, and editorial changes to text and tables.

The cover, headings, and designation of the Standard have also been revised to reflect reorganization of the B16 Committee as an ASME Committee whose procedures are accredited by ANSI. This Standard is offered on a subscription service basis that includes interpretations and addenda up to the issuance of a new edition.

All requests for interpretations or suggestions for revisions should be sent to the Secre- tary, B16 committee, The American Societyof Mechanical Engineers, United Engineering Center, 345 East 47th Street, New York, N.Y., 10017.

Following approval by the B16 Committee and its ASME Supervisory Board, this Stand- ard was approved as an American National Standard by ANSI on July 30, 1985.

iii


ASME B I 6 COMMITTEE Standardization of Valves, Flanges, Fittings, Gaskets, and Valve Actuators

(The following is the roster of the Committee at the time of approval of this Standard.)

-~

ASflE Blb.qO 85 m 0757670 0042261 3

OFFICERS

W. G. Canham, Chairman W. N. McLean, Vice Chairman

M. J. Hogan, Secretary

COMMITTEE PERSONNEL

P. H. Awtrey, Walworth Co., Greensburg, Pennsylvania W. Ballis, Columbia Gas Distribution Co., Columbus, Ohio J. E. Batey, Oak Ridge National Laboratory, Oak Ridge, Tennessee S. L. Blachman, American Gas Association Laboratories, Cleveland, Ohio R. R. Brodin, Fischer Controls International Inc., Marshalltown, Iowa W. J. Burns, Department of Water and Power, Los Angeles, California W. G. Canham, Brentwood, Missouri J. C. Church, Mamaroneck, New York A. Cohen, Copper Development Association, Greenwich, Connecticut J. S. Cole, ITT Grinnell Industrial Piping, Inc., Kernersvilre, North Carolina F. G. Doar, Southern Services, Inc., Birmingham, Alabama W. C. Farrell, Stockham Valves and Fittings, Birmingham, Alabama D. R. Frikken, Monsanto Co., St. Louis, Missouri M. W . Garland, Frick Co., Waynesboro, Pennsylvania J. C. Inch, Mueller Brass Co., Hartsville, Tennessee J. S. John, Houston, Texas W. G. Knecht, Anchor/Darling Valve Co., Williamsport, Pennsylvania R. Koester, The William Powell Co., Cincinnati, Ohia J. D. Koski, U. S. Coast Guard, Washington, D.C. J. E. LeCoff, Elkins Park, Pennsylvania B. H. Leonard, Atherton, California J. Longacre, Nibco Inc., Elkhart, Indiana O. P. Lovett, Newark, Delaware J. H. McCauley, McCauley Mechanical, Chicago, Illinois W. N. McLean, Crane Co., Willowbrook, Illinois B. J. Milleville, Rockwell International, Pittsburgh, Pennsylvania A. D. Nalbandian, ITT Grinnell Corp., Providence, Rhode Island M. E. O'Hagan, Valve Manufacturers Association, Washington, D.C. J. A. Osterberg, American Bureau of Shipping, New York, New 'ork H. W. Palm, Crane Co., St. Louis, Missouri R. F. Rhodes, Anglo Energy, Ltd., Houston, Texas R. A. Schmidt, Ladish Co., Russellville, Arkansas F. F. Stroud, Ductile Iron Pipe Research Association, Birmingham, Alabama M. R. Suchomel, Underwriters Laboratories Inc., Northbrook, Illinois R. E. White, Repairs Inc., South Bend, Indiana D. Wilson, Mobile Pipeline Co., Dallas, Texas V. F. Wolff, Phillips Petroleum Co., Bartlesville, Oklahoma

a

a V

f Y.. ~-~ -~ ~ - ~ _ ~ _ _ _ COPYRIGHT American Society of Mechanical EngineersLicensed by Information Handling ServicesCOPYRIGHT American Society of Mechanical EngineersLicensed by Information Handling Services

PERSONNEL OF ASME B I 6 SUBCOMMITTEE L ON GAS SHUTOFFS AND VALVES

S. L. Blachman, Chairman, American Gas Association Laboratories, Cleveland, Ohio J. E. Allen, Public Service Electric and Gas, Newark, New Jersey G. L. Anderson, Dresser Industries, Inc., Bradford, Pennsylvania C. W. Arnott, Brooklyn Union Gas, Brooklyn, New York D. W. Duffy, Rockwell International Corp., Pittsburgh, Pennsylvania C. E. Floren, Mueller Corp., Decatur, Illinois W. B. Heidbrier, A. Y. McDonald Mfg. Co., Dubuque, Iowa C. R. Heseman, Illinois Power Co., Decatur, Illinois R. D. McNerney, Milwaukee Valve Co., Milwaukee, Wisconsin E. E. Moore, Eclipse Inc., Rockford, Illinois R. B. Pinkston, Consolidated Natural Gas Services, Pittsburgh, Pennsylvania M. A. Robinson, Conbraco Industries, Inc., Matthews, North Carolina E. L. Schmitt, Kerotest Mfg. Corp., Pittsburgh, Pennsylvania R. C. Stewart, Worthington, Ohio F. R. Volgstaat, Perfection Corp., Madison, Ohio A. G. Yeager, Jr., New Orleans Public Service, Inc., New Orleans, Louisiana

vi


CONTENTS

Foreword ............................................................... iii Standards Committee Roster. .............................................. v

1 Scope .............................................................. 1 2 Construction.. ...................................................... 1 3 Performance and Testing ............................................. 3

Tables

2 Duration of Test .................................................... 4 3 Maximum Turning Torque Values ...................................... 5 4A Minimum Sustained Pressure Test Requirements at 74 "F (23 "C) ........... 6 4B Minimum Sustained Pressure Test Requirements at 100 "F (38 "C) .......... 6 5 Flow and Head Loss Coefficients ...................................... 7

1 Design Pressures for Valves ........................................... 3

Annex A References.. ........................................................ 9

vii

>-


ANSI/ASME B I 6.40-1 985 AN AMERICAN NATIONAL STANDARD

-AN AMERICAN NATIONAL STANDARD

MANUALLY OPERATED THERMOPLASTIC GAS SHUTOFFS AND VALVES IN GAS DISTRIBUTION SYSTEMS

1 SCOPE

(a) This Standard covers manually operated thermoplastic shutoffs and valves in sizes I/2 through~6 which are suitable for use in thermoplastic distribution mains and service lines (as defined in the Mini- mum Federal Safety Standards cited below) where the maximum pressure at which such distribution piping systems may be operated is in accordance with the Code of Federal Regulations (CFR)Title49, Part 192, Transportation of Natural and Other Gas by Pipeline; Minimum Safety Standards, for temperature ranges of - 20 "F to 100 "F ( - 29 OC to 38 "C). The term valve is used in this Standard to represent shutoffs and valves to avoid repetition throughout the document. Valves covered by this Standard are intended for use below ground only.

(b) This Standard sets forth the minimum capabili- ties, characteristics, and properties which a newly manufactured valve must possess in order to be considered suitable for use in piping systems indicated above with natural gas, manufactured gas [includes synthetic natural gas (SNG)], and liquefied petroleum gases (distributed as a vapor, with or without the ad- mixture of air) or mixtures thereof. (Components may be adversely affected by gas? having high hydrogen content or compounds likely to form condensates. Specific application details must be considered.) Details of design and manufacture, other than those stated in this Standard, including design and production tests, remain the responsibility of the manufacturer.

(c) Standards and Specifications referenced under this Standard are shown in Annex A.

2 CONSTRUCTION

2.1 General

Each valve shall be capable of meeting the requirements set forth in this Standard. The workmanship

1

employed in the manufacture and assembly of each valve shall provide gas tightness, safety and reliability of performance, and freedom from injurious imper- fections. and defects.

2.2 Materials

(a) All pressure-containing valve shell parts shall be made from materials specified in and qualified to the requirements for pipe and fittings as listed in ASTM D 2513, Specifications for Thermoplastic Gas Pressure Pipe, Tubing and Fittings. Other thermoplastic materials may be used for such parts providing that they meet the following criteria, taken from Appendix XI of ASTM D 2513: an ASTM material specification; a long-term (100,000 hr) strength value determined in accordance with Appendices X1 and X 2 or X3 and X4 of ASTM D 2837. In addition, evidence shall be pre- sented to demonstrate that such materials will per- form satisfactorily in a fuel gas environment and that they are resistant to chemicals listed in para. 8.10 (Chemical Resistance) of ASTM D 2513.

(b) Parts, other than valve shell parts, which con- tribute to pressure containment or to retaining differential pressure across the closure element shall be resistant to the gases in Section 1, para. (b) and the chemicals referred to in para. 2.2(a). Such parts shall be designed to withstandnormal valve operating loads and, in addition, shall provide long-term pressure containment integrity consistent with shell parts. The sustainedpressure tests of paras. 3.3.3(a) and 3.3.3(b) shall qualify the materials selections for these parts, which include, but are not limited to, the closure mem- ber, stems or shafts (if they are designed to retain pressure), and fasteners retaining shell sections.

(c) Lubricants and/or sealants shall be resistant to the action of the gases referred to in Section I, para. (b) and the chemicals referred to in para. 2.2(a) and shall not adversely affect the valve.


ANSVASME B I 6.40-1 985 AN AMERICAN NATIONAL STANDARD

2.3 Configuration

2.3.1 Operating Indication (a) Valves designated for one-quarter turn opera-

tion shall be designed to visually show the open and closed position of the valve. A rectangular stem head or an arrow thereon or a separate position indicator shall indicate the closed position of the valve port when the longitudinal axis of the stem head or indicator is perpendicular to the axis of the connecting pipe. If a separate indicator is employed, it shall be designed such that it cannot be assembled to incorrectly indicate the position of the valve.

(b) Valves designed for more than one-quarter turn operation shall close by clockwise stem rotation unless otherwise specified by the user. The direction for clos- ing the valve shall be indicated.

2.3.2 Valve End Design. Valve ends shall be designed to one or more of the following unless otherwise specified:

(a) polyethylene valve stub ends which conform to the applicable dimensions listed in Tables 1 , 2, and 3 of ASTM D 3261;

(b) polyethylene valve stub ends which conform to the applicable dimensions listed in Tables 2, 3, and 4 of ASTM D 2513;

(c) polyethylene socket-type ends which conform to the applicable dimensions listed in Table 1 of ASTM D 2683; (d) polyethylene insert-type socket ends which con-

form to applicable dimensions given in Tables 1 and 2 of ASTM D 3 197;

(e) Schedule 40 PVC socket ends which conform to applicable dimensions given in Table 1 of ASTM D 2466;

(t> Schedule 80 PVC socket ends which conform to applicable dimensions given in Table 1 of ASTM D 2467;

(g) integral mechanical joints which meet the requirements of the applicable paragraphs under CFR Title 49, Part 192, Subpart F, Joining of Materials other than by Welding.

2.4 Pressure Rating

(a) The maximum pressure rating capability of each valve made from a given material shall be ex- pressed as a standard dimension ratio (SDR) equivalent rating corresponding to the SDR of the maximum pressure rating pipe with which the valve is designed to be used and assuming that this pipe is made of the same strength material as the fitting.


The SDR equivalent rating is equal to D/t , where D =standard specified outside diameter of the

pipe to which the valve is designed to be connected

t = standard resultant minimal wall thickness for highest pressure rated pipe (i.e., thickest wall) of outside diameter D to which the valve is designed to be connected, determined assuming the strength of the pipe material is equal to that of the fitting material

(b) The design pressure of the valve, for purposes of production and qualification testing, shall be equal to the maximum service pressure permitted for pipe of the same material and SDR rating as the valve, as defined in the Minimum Federal Safety Standards cited in Section 1 , para. (a). Design pressures for representative materials and SDR equivalent ratings are given in Table l .

These values are calculated based on the requirements stated in Section 192.121 of the Minimum Fed- eral Safety Standards cited in Section 1, para. (a), or 100 psig [6.9 bar (gage)], whichever is the lesser.

(c) Service pressures for thermoplastic valves shall not exceed pressures permitted for pipe of the same material and SDR rating as the valve. Valves made from certain materials may have reduced allowable service pressures at temperatures in excess of 74F (23 "C) as follows. For service temperatures from 75 "F to 100 "F (24 "C to 38 "C), the maximum pressure may be determined from the following equation:

P = 2S/(SDR- 1) X 0.32 [not to exceed 100 psi (6.9 bar)]

where P = design pressure S =long-term hydrostatic strength of the specific

thermoplastic valve shell material at 100F (38"C), as defined in ASTM D 2513. (The value of S should be obtained from the valve manufacturer.)

2.5 Marking

(a) Each valve shall be clearly marked to show the

( I ) the designation B16.40 and the manufactur-

(2) the size; (3) the pressure shell material designation code

(4) SDR equivalent; (5) each pressure shell part shall be marked with

following:

er's name or trademark;

as specified in para. 3.5 of ASTM D 2513;


ASME B 1 6 . 4 0 85 m 0 7 5 7 6 7 0 0 0 4 2 2 6 6 2 m


ANSUASME B I 6.40-1 985 AN AMERICAN NATIONAL STANDARD

TABLE I DESIGN PRESSURES FOR VALVES' Maximum Allowable Gage Pressure for Pipe for Service Temps. from - 20 OF to 74OF ( - 29 OC to 23 OC)

PE2306 PE3306 PVC1 120

P621 1 O PE3406 PE3408 PVC1 220 PVC21 10 SDR

Equivalent psig bar (gage) psig bar (gage) psig bar (gage) psig bar (gage) psig bar (gage)

6 9.3

10 11

13.5 17 21 26

. . . . . .

. . . . . .

. . . . . . 1 O0 6.9

1 O0 6.9 80 5.5 64 4 .4

. . . . . .

1 O0 6.9 96 6.6 89 6.1 80 5.5

64 4 .4 50 3 .4 40 2 .8 ... . . .

1 O0 1 O0 1 O0 1 O0

81 6 4 51

. . .

6.9 6.9 6.9 6.9

5.6 4.4 3.5 . . .

. . . . . .

. . . . . .

... . . . 1 O0 6.9

1 O0 6.9 1 O0 6.9 1 O0 6.9 1 O0 6.9

. . . . . .

. . . . . .

. . . . . . 1 O0 6.9

1 O0 6.9 80 5.5 64 4 .4 51 3.5

GENERAL NOTE: 1 bar = lo5 Pa

NOTE: (1 The fiber stresses used to derive these test pressures are:

Material

PB21 10 PE2306, PE3306, and PE3406 PE3408 PVC1 120 and PVC1 220 PVC21 1 o

a coded compound identification in accordance with X4.6.1.1,X4.6.1.2,X4.6.1.3,andX4.6.1.4inASTM D 2513.

(b) The marking specified in paras. (a)(l) and (5) above shall be permanently affixed to or be incorpo- rated as part of the valve. Other markings may be affixed to the valve by any means. Markings shall in no way impair the StructuraLintegrity or the operation of the valve.

2.6 Lubrication (Sealant)

Valves which require pressure lubrication (by thein- sertion through fittings of lubricant to the sealing sur- faces of the valve) shall be capable of being lubricated while subjected to the design pressure. This provision can be met if lubrication can be accomplished with the valve in both the full open and the full closed position.

3 PERFORMANCE AND TESTING

3.1 General

(a) Gas tightness of production valves shall be demonstrated by subjecting each valve to shell and seat seal tests in accordance with para. 3.2.

3

psi M Pa

2000 13.8 1250 8.6 1600 11.0 4000 27.6 2000 13.8

-

(b) Each basic valve design shall be qualified and demonstrated as suitable for the service by testing ran- domly selected production valves of each size, type, and pressure shell material according to the qualification tests in para. 3.3.

(c) The term design pressure when used in paras. 3.2 and 3.3 shall be the pressure defined in para. 2.4@).

3.2 Production Testing

3.2.1 Shell Test. Each valve shall be tested at gage pressures of 4 f 2 psi (0.28 & 0.14 bar) and a minimum of 1.5 times the design pressure. The test pressure shall communicate to all pressure-containing areas of the valve (including stem seals, valve ends, etc.). The test fluid shall be air or gas and there shall be no visible leakage (no breaking away or buildup of bubbles) as measured by the immersion or leak detection solution methods. If immersion is used, the depth from the water surface shall be no more than 12 in. (300 mm). Other means of leak detection may be used provided they can be shown to be equivalent in leak detection sensitivity. The shell test shall be conducted at a temperature of 74 -t 15 "F (23 f 8 "C). The test fixturing shall not restrain the valve against any mode

\ f


ASME B L b g 4 0 85 m

ANSUASME B I 6.40-1985 AN AMERICAN NATIONAL STANDARD

TABLE 2 DURATION OF TEST

Minimum Nominal Time Duration,

Valve Size sec

2 and smaller 15 Larger than 2 30

of failure or leakage, etc. The minimum duration of each portion of the test shall be as shown in Table 2.

3.2.2 Seat Test. Each valve shall be given seat closure tests at gage pressures of 4 f 2 psi (0.28 f 0.14 bar) and a minimum of 1.5 times the design pressure. These pressures shall be applied successively on each side of the valve seat@) to check the valve sealing performance in both directions (unless the valve is designed and marked for sealing in one direction only or the valve is symmetrical single-seal design requiring test in one direction only). The full test differential shall be applied across the downstream seat if there is more than one seat. The test fluid shall be air or gas and there shall be no visible leakage (no breaking away or building of bubbles) at the downstream seat as measured by the water over air or the leak detector solution methods. Other means of leak detection may be used provided they can be shown to be equivalent in leak detection sensitivity. The test shall be conducted at a temperature of 74 f 15 "F (23 f 8 "C). The minimum duration of each portion of the test shall be as shown in Table 2.

3.3 Qualification-.Testing

3.3.1 Operating Test. It shall be demonstrated that each nominal size of valve is capable of success- fully passing the seat leakage tests outlined in para. 3.2.2 after having completed ten full-open/full-closed cycles at 74 +- 15 "F (23 f 8 "C). The valve shall be pressurized with air or gas to the design pressure at one port with the other port open to atmosphere (O psig) before opening on each cycle. The operating torques shall not exceed those in Table 3.

3.3.2 Temperature Resistance. It shall be demonstrated that each nominal size of valve is capable of being operated at temperatures of - 20 "F ( - 29 "C) and + 100 "F (+ 38 "C) without -visible leakage to atmosphere and without affecting the internal seat sealing performance of the valve. The method of test is as follows. The valve shall be cooled to a temperature of

0759b70 0042267 4 m


- 20 f 5 "F (- 29 +- 3 "C) with enough time allowed for all parts of the valve to come to equilibrium temperature. The valve shall then be pressurized with air or gas to a seat differential pressure equal to the design pressure. The valve shall then be opened against the applied differential pressure and then closed (no seat differential pressure required) and it shall subsequently pass the tests outlined in para. 3.2 while at - 20 "F ( - 29 "C), except nonfreezing leak detection agents shall be used. The valve shall be brought to an equilibrium temperature of 100 f 5F (38 f 3 "C) with enough time allowed for all parts of the valve to come to equilibrium temperature. The valve shall then again be pressurized with air or gas at a seat differential pressure equal to the design pressure. The valve shall then be opened against the applied differential and then closed (no seat differential pressure required) and it shall subsequently pass the tests outlined in para. 3.2 while at 100 "F (38 "C). During tests at 100 "F (38C) the operating torques shall not exceed those specified in Table 3. In tests at - 20 "F ( - 29 "C) the operating torques shall not exceed the values specified in Table 3.

3.3.3 Sustained Pressure Test. Each basic valve design shall be subjected to sustained pressure tests to demonstrate structural and dimensional adequacy under long-term pressure loading. Each variation in material, size, or configuration of molded pressure- containing parts shall constitute a different basic valve design. Where minor design variations are produced by differences in machining of valve end connections to match pipe of different size or SDR rating, only valves with the lowest SDR rating (corresponding to the SDR equivalent rating of the valve) and in the larg- est size need be tested.

(a) Pressure Boundary Verification. Six samples of each basic valve design shall be connected at both ends to thermoplastic pipe of appropriate wall thickness of a length of at least five times its outside diameter or 20 in. (510 mm), whichever is less. These samples shall be subjected to a sustained pressure test for 1000 hr (valves in open position) using water at 74 "F (23 "C) as described in para. 8.6 of ASTM D 2513. The SDR equivalent for the valve shall be used in determining the test pressure from Table 4A. Failure of two of the six samples tested shall constitute failure in the test. Failure of one of the six samples tested is cause for retest of six additional samples. Failure of one of the six samples in retest shall constitute failure in the test. Evidence of failure shall be as defined in para. 8.6 of ASTM D 25 13, applied to a valve test sample.

4


ASME B I b * Y O 85 m 0757670 00'42268 6 W


ANSIIASME BI 6.40-1985 AN AMERICAN NATIONAL STANDARD

Nominal Valve

Size (1

'12

1 1 114 1 'h

TABLE 3 MAXIMUM TURNING TORQUE VALUES

Max. Turning Torque at IOOOF (38 "C)

Ibf-in. N.m

130 15 160 18 ~ 300 34 400 45 500 56

600 900 1200 1350 1500

68 102 136 153 169

Max. Turning Torque at - 20 "F (-29OC)

Ibf-in. N m

390 45 480 54 600 68 800 90

1 O00 112

1200 1350 1800 2025 2250

136 153 204 229 253

NOTE: (1) For valves having different size inlet and outlet, the smaller size shall determine the maximum turning torque.

An additional six samples of each basic valve design shall also be subjected to a similar sustained pressure test for 1000 hr using water at a temperature of 100 f 3.6"F (38 f 2C) and an appropriate test pressure fromTable 4B. Criteria for failure shall be the same as described above for the 74 "F (23 "C) test.

(b) Valve Closure Verification. To demonstrate that sustained pressure application does not produce failure or harmful distortion of the valve closure ele- ments, one valve of each basic valve design shall be subjected to the 100F (38 "C) test defined in (a) above, but with the valve in the closed position and with a test pressure equal to 110% of the design pressure applied at one port and the other port open to the atmosphere.

At the conclusion of this test, the valve shalI be capable of being turned at differential pressure of O psi and design pressure without exceeding the turning

5

torque values in Table 3. Any failure or seepage through a closure part shall constitute failure of this test.

3.3.4 Flow Capacity. The shape, size, and configuration of the valve when in the full-open position shall be designed to provide flow and head loss coefficients specified in Table 5. A valve of each size and type shall be tested to verify the coefficient in a straight run of pipe of the size and wall thickness for which the valve is designed to be connected. The test shall be conducted using a technically competent procedure such as that contained in ANSVISA S75.02, Standard Control Valve Capacity Test Procedure. The test fluid and the type of test facility and instru- mentation are at the discretion of the manufacturer and shall be fully described in his records.


ASME B L 6 - 4 0 85 m 0759670 0042269 8 m

ANSI/ASME B I 6.40-1 985 MANUALLY OPERATED THERMOPLASTIC GAS SHUTOFFS AN AMERICAN NATIONAL STANDARD AND VALVES IN GAS DISTRIBUTION SYSTEMS

TABLE 4A MINIMUM SUSTAINED PRESSURE TEST REQUIREMENTS AT 74OF (23OC)

PE2306 PE3306 PVC1 120

PB21 1 O PE3406 PE3408 PVC1 220 PVC21 10

Equivalent psig bar (gage) psig bar (gage) psig bar (gage) psig bar (gage) psig bar (gage) SDR

. . . . . . . . . . . . 6 . . . . . . 530 36.4 640 44.1 9.3 . . . . . . 320 21.9 385 26.5

10 . . . . . . 295 20.2 355 24.5 . . . . . . . . . * . . . . . . . . . . . . . .

11 400 27.6 265 18.3 320 22.0 840 57.9 460 31.7

13.5 320 22.1 210 14.5 260 17.6 .670 46.2 370 25.5 17 250 17.2 165 11.4 200 13.8 530 36.5 290 20.0 21 . . . . . . . . . . . . 160 11.0 420 29.0 230 15.9 26 . . . . . . * . . 340 23.4 180 12.4 . . . . . . . . .

GENERAL NOTE: 1 bar = I O 5 Pa

NOTE: (1) Based on Table 5 in ASTM D 2513. The fiber stresses used to derive these test pressures are:

Material psi M Pa

PB21 10 2000 13.8 PE2306, PE3306, and PE3406 1320 9.1 PE3408 1600 11.0 PVCl 120 and PVCl 220 4200 29.0 PVC21 1 o 2300 15.9

-

TABLE 4B MINIMUM SUSTAINED PRESSURE TEST REQUIREMENTS AT I O O O F (38C)

PB21 1 O SDR

Equivalent psig bar (gage)

6 . . . . . . 9.3 . . . . . .

10 . . . . . . 11 360 24.8

PE2306 PE3306 PE3406 PE3408

psig bar (gage) psig bar (gage)

430 29.6 530 36.4 260 17.9 320 21.1 240 16.5 295 20.2 215 14.8 245 18.2

PVC1 120 PVC1 220 PVC21 1 o

psig bar (gage) psig bar (gage)

. . . . . . . . . . . .

. . . . . . . . . . . .

. . . . . . . . . . . . 680 47.0 375 25.7

13.5 290 19.8 170 11.7 21 5 14.5 545 37.6 300 20.6 17 225 15.5 135 9.3 145 11.3 425 29.4 235 16.1 21 180 12.4 110 7.6 135 9.1 340 23.5 190 12.9 26 . . . . . . 275 18.8 150 10.3 . . . . . . . . . . . .

GENERAL NOTE: 1 bar = I O 5 Pa

NOTE: (1) The fiber stresses used to derive these test pressures are:

Material psi M Pa

PB21 1 O 1800 12.4 PE2306, PE3306, and PE3406 1070 7.4 PE3408 1320 9.1 PVCl 120 and PVC1 220 3405 23.5 PVC21 10 1865 12.9

-

6


TABLE 5 FLOW AND HEAD LOSS COEFFICIENTS

Alternate Coefficients

Minimum Gas Flow Equivalent Length

at Reference Valve Head Loss in Pipe of SDR 11 Pipe Nominal Conditions (2) Coefficient Velocity Heads (Maximum)

Size (1 ) fWhr mVh (Minimum) (3) (Maximum) (4) ft m Valve C" K

ASME BLb.40 B5 9 0757670 0042270 4 9


ANSVASME B1 6.40-1 985 AN AMERICAN NATIONAL STANDARD

190 290 600

1,200 1,500

2,400 6,000 9,900

15,000 19,000

5.4 8.2

17.0 34.0 42.5

68.0 170.0 280.0 425.0 538.0

6 10 20 39 51

80 200 330 440 650

5.0 5.0 3.0 2.0 2.0

~ ~~

10 15 12 11 13

~

3.0 4.6 3.7 3.4 4.0

2.0 1.5 1.5 1.5 1.9

17 21 28 37 57

5.2 6.4 8.5

11.3 17.4

NOTES: (1) For valves having different size inlet and outlet, the smaller size shall determine the coefficient. (2) Minimum gas flow in standard cubic feet per hour (cubic meters per hour) with the valve in the fully open position at an inlet pres-

sure of 0.5 psig L0.035 bar (gagell, 7OoF (21.1 "C), 0.64 specific gravity, and 0.3 in. (7.6 mm) water column net valve pressure drop, assuming valve in SDR 11 pipe.

(3) C, = Flow of water at 6OoF (16OC) in U.S. gallons per minute which a valve will pass a t a pressure drop of 1 .O psi (0.07 bar). (4) K = Head loss coefficient consistent with the equation:

where

h, = head loss produced by valve, f t (m) V = fluid velocity in pipe, ftlsec (mls) g = acceleration due to gravity, ftlsecZ (mls2)


ASME B L b * 4 0 85 W 0757670 0042273 b W

MANUALLY OPERATED THERMOPLASTIC GAS SHUTOFFS ANSUASME B1 6.40-1 985 AND VALVES IN GAS DISTRIBUTION SYSTEMS ~ - AN AMERICAN NATIONAL STANDARD
