ASME_B16-33-2002.pdf

ASME B16.33-2002(Revision of ASME B16.33-1990)MANUALLY OPERATED METALLIC GAS VALVES FORUSE IN GAS PIPING SYSTEMSUP TO 125 PSI(SIZES NPS 1/2THROUGH NPS 2)A N A M E R I C A N N A T I O N A LS T A N D A R DASME B16.33-2002(Revision of ASME B16.33-1990)MANUALLY OPERATED METALLIC GAS VALVES FORUSE IN GAS PIPING SYSTEMSUP TO 125 PSI(SIZES NPS 1/2THROUGH NPS 2)A N A M E R I C A N N A T I O N A LS T A N D A R DCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.AN AMERICAN NA TIONALST ANDARDMANUALLY OPERATED METALLIC GAS VALVES FORUSE IN GAS PIPING SYSTEMSUP TO 125 PSI(SIZES NPS 1/2THROUGH NPS 2)ASME B16.33-2002(Revision of ASME B16.33-1990)Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.Date of Issuance:July 30,2002The next edition of this Standard is scheduled for publication in 2007.Therewill be no addenda or written interpretations of the requirements of thisStandard issued to this edition.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 forAmerican National Standards.The Standards Committee that approved the code or standardwas balanced to assure that individuals from competent and concerned interests have had anopportunity to participate.The proposed code or standard was made available for public reviewand comment that 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 inconnection withany itemsmentioned inthis document,and doesnot undertaketo insureanyoneutilizing a standardagainst liability for infringementof any applicable letterspatent,nor assumesany such liability.Users of a code or standard are expressly advised that determination of thevalidity of any such patent rights,and the risk of infringement of such rights,is entirely theirown responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not tobe interpreted as government or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued inaccordance with the established ASME procedures and policies,which precludes the issuanceof 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 2002 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll Rights ReservedPrinted in U.S.A.Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.CONTENTSForeword.ivCommittee Roster.viCorrespondence with the B16 Committee.vii1Scope.11.1General.11.2Design.11.3Standards and Specifications.11.4Quality Systems.11.5Convention.11.6Codes and Regulations.12Construction.12.1General.12.2Tamper-Proof Features.12.3Configuration.22.4Marking.22.5Lubrication(Sealant).23Materials.23.1Metallic Materials for Valve Parts.23.2Lubricants,Sealants,and Seating Materials.24Design Qualification.34.1General.34.2Gas Tightness.34.3Temperature Resistance.34.4Structural Provision.44.5Flow Capacity.55Production Testing.5Figure1Test Assembly.4Tables1Materials for Metallic Valve Parts.22Torque Values.43Bending Moment Values.44Tensile Load Values.55Maximum Turning Torque Values.56Minimum Gas Flows.5AnnexesAReferences.6BQuality System Program.8iiiCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.FOREWORDThe B16 Standards Committee was organized in the Spring of 1920 and held itsorganizational meeting on November 21 of that year.The group operated as a SectionalCommittee(later redesignated as a Standards Committee)under the authorization of theAmerican Engineering Standards Committee(subsequently named American Standards Associ-ation,United States of America Standards Institute,and now,American National StandardsInstitute).Sponsors for the group were The American Society of Mechanical Engineers,Manufacturers Standardization Society of the Valve&Fittings Industry,and the Heatingand Piping Contractors National Association(later the Mechanical Contractors Associationof America).The American Ga