ASME_B16.15-2018.pdf

AN AM E R IC A N NAT IO NAL STANDARDASME B16.15-2018(Revision of ASME B16.15-2013)Cast Copper Alloy Threaded FittingsClasses 125 and 250ASME B16.15-2018(Revision of ASME B16.152013)Cast CopperAlloy ThreadedFittingsxClasses 125 and 250AN AMERICAN NATIONAL STANDARDTwo Park Avenue New York,NY 10016 USAxDate of Issuance:October 12,2018The next edition of this Standard is scheduled for publication in 2023.ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard.Periodically certainactionsoftheASMEB16CommitteemaybepublishedasCases.CasesandinterpretationsarepublishedontheASMEwebsiteunder 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,ortocorrecttypographicalorgrammaticalerrorsincodesandstandards.Sucherratashallbeusedon the date posted.TheCommitteePagescanbefoundathttp:/cstools.asme.org/.Thereisanoptionavailabletoautomaticallyreceiveane-mailnotification when errata are posted to a particular code or standard.This option can be found on the appropriate CommitteePage after selecting“Errata”in the“Publication Information”section.ASME is the registered trademark of The American Society of Mechanical Engineers.ThiscodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNationalStandards.TheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanopportunityto participate.The proposed codeorstandardwasmadeavailable forpublic reviewandcommentthatprovidesanopportunityfor 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 thisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyapplicableletterspatent,norassumeanysuchliability.Usersofacodeorstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtherisk of infringement of such rights,is entirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry 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 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 EngineersTwo Park Avenue,New York,NY 10016-5990Copyright 2018 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword.vCommittee Roster.viiCorrespondence With the B16 Committee.viiiSummary of Changes.xList of Changes in Record Number Order.xi1Scope.12General.13PressureTemperature Ratings.14Size.25Marking.26Material.27Threads.28Ribs.29Surface Finish.310Fitting Dimensions.311Tolerances.312Pressure Test.3Mandatory AppendixIReferences.17Nonmandatory AppendixAQuality System Program.18Figure4.2-1Identification of Reducing Fittings.4Tables3.1-1PressureTemperature Ratings.37.1.3-1Dimensions of 90-deg Elbows,Tees,Crosses,45-deg Elbows,and Couplings(Straight Sizes)Class125.57.1.3-2Dimensions of Caps Class 125.67.1.3-3Dimensions of Outside Head,Inside Head,and Face Bushings Class 250.710.1.2-1Dimensions of 90-deg Elbows(Reducing Sizes)Class 125.910.1.2-2Dimensions of Tees(Reducing Sizes)Class 125.1010.1.2-3Dimensions of 90-deg Elbows(Reducing Sizes)Class 250.1110.1.2-4Dimensions of Tees(Reducing Sizes)Class 250.1210.1.2-5Dimensions of Square Head and Square Socket Plugs.13iii10.1.2-6Dimensions of Reducers,Closed and Open Pattern Return Bends,and 45-deg Y Branches(StraightSizes)Class 125.1410.1.2-7Dimensions of 90-deg and 45-deg Street Elbows Class 125.1510.1.2-8Dimensions of 90-deg Elbows,Tees,Crosses,45-deg Elbows,and Couplings(Straight Sizes)Class250.1611.3-1Inspection Tolerances,Center-to-End and Center-to-Center.16ivFOREWORDAsearlyasthespringof1921,theconsolidationandfurtherdevelopmentofthreadedandflangedfittingsstandardsinforce in the United States seemed desirable.To meet this need,the American Standards Association(ASA)now theAmerican National Standards Institute(ANSI)authorized the organization of a Sectional Committee on theStandardization of Pipe Flanges and Flanged Fittings(B16),with the Heating,Piping,and Air ConditioningContractors National Association(now known as the Mechanical Contractors Association of America),theManufacturers Standardization Society of the Valve and Fittings Industry(MSS),and The American Society ofMechan