1、AN AM E R IC AN NAT IO NAL STANDARDASME B16.51-2021(Revision of ASME B16.51-2018)Copper and Copper Alloy Press-Connect Pressure FittingsASME B16.51-2021(Revision of ASME B16.51-2018)Copper andCopper AlloyPress-ConnectPressure FittingsAN AMERICAN NATIONAL STANDARDTwo Park Avenue New York,NY 10016 USA
2、xDate of Issuance:February 28,2022The next edition of this Standard is scheduled for publication in 2026.ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard.Periodically certainactionsoftheASMEB16CommitteemaybepublishedasCases.Casesandinterpretat
3、ionsarepublishedontheASMEwebsiteunder the Committee Pages at http:/cstools.asme.org/as they are issued.Errata to codes and standards may be posted on the ASME website under the Committee Pages to provide corrections toincorrectlypublisheditems,ortocorrecttypographicalorgrammaticalerrorsincodesandsta
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5、ata”in the“Publication Information”section.ASME is the registered trademark of The American Society of Mechanical Engineers.ThiscodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNationalStandards.TheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassuretha
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7、”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 thisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyap
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9、ustry is not to be interpreted as government or industryendorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME proceduresand policies,which precludes the issuance of interpretations by individual
10、s.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.The American Society of Mechanical EngineersTwo Park Avenue,New York,NY 10016-5990Copyright 2022 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEER
11、SAll rights reservedCONTENTSForeword.vCommittee Roster.viCorrespondence With the B16 Committee.viiSummary of Changes.ixList of Changes in Record Number Order.x1Scope.12General.13Terminology.14Size.25Marking.26Material.27Laying Lengths.28Tube Stops.29Design.310Threaded Ends.311Alignment.312Gaging.313
12、Installation Instructions.414Design Qualification.4Mandatory AppendixIReferences.15Nonmandatory AppendixAQuality System Program.16Figures3.1-1Method of Designating Laying Lengths of Fittings and Openings of Reducing Fittings.68-1Tube Stops.1011-1Alignment.1014.2.1-1Test Setup for Pressure Test.1014.
13、4.1-1Test Setup for Static Torque Test.1114.5.1-1Test Setup for Bending Test.1214.8.1-1Test Setup for Vibration Test.1314.9.1-1Test Setup for Thermocycling Test.1414.10.1-1Test Setup for Dynamic Torque Test.14iiiTables9.1-1Dimensions of Press-Connect Ends.814.2.2-1Maximum Slippage.1114.4.1-1Torque.1
14、114.5.1-1Concentrated Load.12ivFOREWORDStandardizationofcastandwroughtpress-connectpressurefittingswasinitiatedbySubcommitteeJoftheASMEB16Committee in 2000.The first draft of the Standard was based on International Association of Plumbing and MechanicalOfficials(IAPMO)Interim Guide Criteria IGC 137-
15、2000.The general requirements of ASME B16.22-2000 and ASMEB16.24-1998 were added to the first draft.The development of the Standard was necessary to regulate the strengthofthejointincopperpress-connectfittings.TheperformancetestrequirementsofthisStandardareanimportantaspectfor determining the qualit
16、y of the fittings.Following approval by the Standards Committee and the ASME Board on PTCS,approval as an American NationalStandard was given by the American National Standards Institute(ANSI)on December 21,2011 with the designationASME B16.51-2011.Inthe2013edition,provisionswereincludedtorecognizelow-leadalloystocomplywithanamendmenttotheU.S.SafeDrinking Water Act that went into effect in January 2014.Following approval by the ASME B16 Standards Committee,approvalasanAmericanNationalStandardwas
