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ASME_B16-44-2012.pdf

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1、AN AMERICAN NATIONAL STANDARD ASME B16.44-2012Revision of ASME B16.44-2002(R2007)Manually Operated Metallic Gas Valves for Use in Aboveground Piping Systems Up to 5 psiCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without l

2、icense from IHS-,-,-Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B16.44-2012Revision of ASME B16.44-2002(R2007)Manually OperatedMetallic Gas Valves forUse in AbovegroundPiping SystemsUp to

3、 5 psiAN AMERICAN NATIONAL STANDARDThree Park Avenue New York,NY 10016 USACopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Date of Issuance:November 19,2012The next edition of this Standard is sche

4、duled for publication in 2017.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.Casesand interpretations are published on the ASME Web site under the Committee Page

5、s athttp:/cstools.asme.org/as they are issued.Errata to codes and standards may be posted on the ASME Web site under the Committee Pages toprovide corrections to incorrectly published items,or to correct typographical or grammatical errorsin codes and standards.Such errata shall be used on the date

6、posted.The Committee Pages can be found at http:/cstools.asme.org/.There is an option available toautomatically receive an e-mail notification when errata are posted to a particular code or standard.ThisoptioncanbefoundontheappropriateCommitteePageafterselecting“Errata”inthe“PublicationInformation”s

7、ection.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria for American NationalStandards.The Standards Committee that approved the code or standard was balanced to assure that indivi

8、duals fromcompetent and concerned interests have had an opportunity to participate.The proposed code or standard was madeavailable forpublic review andcomment thatprovides an opportunityfor additional publicinput from industry,academia,regulatory agencies,and the public-at-large.ASME does not“approv

9、e,”“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 anyitems mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability f

10、orinfringement of any applicable letters patent,nor assumes any such liability.Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights,and the risk of infringement of such rights,isentirely their own responsibility.Participation by federal agency

11、 representative(s)or person(s)affiliated with industry is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies,which preclu

12、des the issuance of interpretations by individuals.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 EngineersThree Park Avenue,New York,NY 10016-5990Copyright

13、 2012 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-CONTENTSForeword.ivCommittee Roster.vCorrespondence With the

14、 B16 Committee.vi1Scope.12General Construction and Assembly.13Materials.24Marking.45Design Qualifications.46Manufacturing and Production Tests.7Figure1Test Device.6Tables1Flare Fitting Dimensions.22Materials for Valve Bodies,Plugs,Bonnets,Unions,and Other ExternalParts Excluding Handles.33Operating

15、Torque Values.44Minimum Flow Capacity.55Installation Torque.56Impact Load.57Static Load for Bending Test.6Mandatory AppendixIReferences.9Nonmandatory AppendixAQuality System Program.11iiiCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking

16、permitted without license from IHS-,-,-FOREWORDThe B16 Standards Committee was organized in the spring of 1920 and held its organizationalmeeting on November 21st of that year.The group operated as a sectional Committee(laterredesignated as a Standards Committee),under the authorization of the American EngineeringStandards Committee subsequently named American Standards Association(ASA),then theUnited Statesof America StandardsInstitute,and now,the American NationalStandards Institute(ANSI).Spon

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