1、AN AMERICAN NATIONAL STANDARDCast Copper Alloy Fittings for Flared Copper TubesASME B16.26-2011(Revision of ASME B16.26-2006)ASME B16.26-2011(Revision of ASME B16.26-2006)Cast CopperAlloy Fittings forFlared CopperTubesAN AMERICAN NATIONAL STANDARDThree Park Avenue New York,NY 10016 USADate of Issuan
2、ce:October 7,2011The next edition of this Standard is scheduled for publication in 2016.ASME issues written replies to inquiries concerning interpretations of technical aspects of thisStandard.Periodically certain actions of the ASME B16 Committee may be published as Cases.Cases and interpretations
3、are published on the ASME Web site under the Committee Pages athttp:/cstools.asme.org as they are issued and will be published within the next edition of thestandard.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures
4、accredited as meeting the criteria for American NationalStandards.The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate.The proposed code or standard was madeavailable forpublic
5、review andcomment thatprovides an opportunityfor additional publicinput 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
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8、.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies,which precludes the issuance of interpretations by individuals.No part of this document may be reproduced in any form,in an electronic retrieval system o
9、r otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2011 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword.ivCommittee Roster.vCorrespondence W
10、ith the B16 Committee.viSummary of Changes.vii1Scope.12General.13Pressure Rating.14Size.15Marking.16Material.17Dimensions.18Threading.29Hydrostatic Test.2Tables1General Dimensions Cast Copper Alloy Fittings for Flared Copper Tubes.32Thread Specifications:External Threads on Fittings Class 2A.43Threa
11、d Specifications:Internal Threads on Nuts Class 2B.4Mandatory AppendicesIU.S.Customary Units.5IIReferences.7Nonmandatory AppendicesAFlared Tube Dimensions.8BQuality System Program.9iiiFOREWORDThe development of a standard for brass fittings for flared copper water tubes was initiatedby a subcommitte
12、e of the Copper Tube and Fitting Manufacturers Standardization Committeein 1929.When a general agreement had been reached,the draft of the proposed standard wassubmitted to Sectional Committee A40 on Minimum Requirements for Plumbing andStandardization of Plumbing Equipment,of the American Standards
13、 Association(ASA).SectionalCommittee A40 was jointly sponsored by the American Society of Sanitary Engineering and TheAmerican Society of Mechanical Engineers(ASME).Final ASA approval and designation as an American Standard,ASA A40.2-1936,was grantedJanuary 20,1936.The Standard remained unchanged an
14、d without reaffirmation until 1955 when this activitywas transferred from Sectional Committee A40 to Sectional Committee B16 on Standardizationof Pipe Flanges and Fittings,under the sponsorship of ASME,the Mechanical ContractorsAssociation of America,Inc.,and the Manufacturers Standardization Societ
15、y of the Valve andFittings Industry.Subcommittee No.9 B16 on Solder-Joint Fittings was instructed to develop a revised standard.The revised draft of this Standard was submitted to industry for criticism and comment.Thefinal draft was approved by Sectional Committee B16 and its sponsors by letter bal
16、lot.ASAapprovalanddesignationasASAB16.26-1958wasgrantedonFebruary12,1958.Beginningin 1965,consideration was given to reviewing the Standard in light of progress made in theproduction of these fittings.Subcommittee No.9 completed its work by recommending theupdating of referenced standards and thread specifications and including additional material.Following approval by the USA Standards Committee and Sponsors,the revision was approvedby the new USA Standards Institute on April 21,1967.In 1982,Am
