ANSI B16.15-1985 CAST BRONZE THREADED FITTINGS

ANAMERICANNATIONALSTAND'ARDCASTBRONZETHREADEDFITTINGSANSIIASMEB16.15-1985(REVISIONOFANSIB16.15-I978)CLASSES125and250SPONSOREDANDPUBLISHEDBYTHEAMERICANSOCIETYOFMECHANICALENGINEERSUnitedEngineeringCenter345East47thStreetNewYork,N.Y.10017COPYRIGHTAmericanSocietyofMechanicalEngineersLicensedbyInformationHandlingServicesCOPYRIGHTAmericanSocietyofMechanicalEngineersLicensedbyInformationHandlingServicesDateofIssuance:August15,1986The1985EditionofthisStandardisbeingissuedwithanautomaticaddendasubscriptionservice.Theuseofanaddendaallowsrevisionsmadeinresponsetopublicreviewcom-mentsorcommitteeactionstobepublishedasnecessary;revisionspublishedinaddendawillbecomeeffective6monthsaftertheDateofIssuanceoftheaddenda.Thenextedi-tionofthisStandardisscheduledforpublicationin1990.ASMEissueswrittenrepliestoinquiriesconcerninginterpretationsoftechnicalaspectsofthisStandard.Theinterpretationswillbeincludedwiththeaboveaddendaservice,InterpretationsarenotpartoftheStandardortheaddendatotheStandard.ThiscodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNationalStandards.TheConsensusCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanopportunitytoparticipate.Theproposedcodeorstandardwasmadeavailableforpublicreviewandcommentwhichprovidesanopportunityforadditionalpublicinputfromindustry,academia,regulatoryagencies,andthepublic-at-large.ASMEdoesnotapprove,rate,orendorseanyitem,construction,proprietarydevice,oractivity.ASMEdoesnottakeanypositionwithrespecttothevalidityofanypatentrightsassertedinconnectionwithanyitemsmentionedinthisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyapplicableLettersPatent,norassumeanysuchliability.Usersofacodeorstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtheriskofinfringementofsuchrights,isentirelytheirownresponsibility.Participationbyfederalagencyrepresentative(s)orperson(s)affiliatedwithindustryisnottobeinterpretedasgovernmentorindustryendorsementofthiscodeorstandard.ASMEacceptsresponsibilityforonlythoseinterpretationsissuedinaccordancewithgoverningASMEproceduresandpolicieswhichprecludetheissuanceofinterpretationsbyindividualvolunteers.Nopartofthisdocumentmaybereproducedinanyform,inanelectronicretrievalsystemorotherwise,withoutthepriorwrittenpermissionofthepublisher.CopyrightO1986byTHEAMERICANSOCIETYOFMECHANICALENGINEERSAllRightsReservedPrintedinU.S.A.COPYRIGHTAmericanSocietyofMechanicalEngineersLicensedbyInformationHandlingServicesCOPYRIGHTAmericanSocietyofMechanicalEngineersLicensedbyInformationHandlingServicesFOREWORD(ThisForewordisnotapartofANSVASMEBI6.15-1985.)Asearlyasthespringof1921,theconsolidationandfurtherdevelopmentofthreadedandflangedfittingsstandardsinforceinthiscountryseemeddesirable.Tomeetthisneed,theAmericanStandardsAssociation(ASA)[nowtheAmericanNationalStandardsInsti-tute(ANSI)]authorizedtheorganizationofaSectionalCommitteeontheStandardizationofPipeFlangesandFlangedFittings(B16),withtheHeating,Piping,andAirConditioningContractors'NationalAssociation(nowknownastheMechanicalContractorsAssociationofAmerica),theManufacturersStandardizationSocietyoftheValveandFittingsIndustry(MSS),andTheAmericanSocietyofMechanicalEngineersactingasjointsponsors.InJune1927,theManufacturersStandardizationSocietyoftheValveandFittingsIn-dustryappointedacommitteeonNonferrousScrewFittingsforthepurposeofdevelopingstandardsforproductscommonlydesignatedasthreadedpipefittingsofbrass,bronze,orothernonferrousmaterials.At.thetimebrassthreadedfittingswerefurnishedfromanum-berofdifferentpatternswithwide-variationsindimensionsandweights.MSSSP-10for125lbBronzeScrewedFittingsandMSSSP-11for250lbBronzeScrewedFittingsweredevelopedandadoptedbytheMSSinSeptember,1930.Thelighterfittingswerepatternedaftermalleableironthreadedfittings,thenstandardizedinASABEC,whiletheheavierproductswerepatternedafterthecastironthreadedfittingscoveredbyASAB16d.Thusapracticewasstandardizedthathadbeenfoundsatisfactoryinthevalveandfittingsindustryovermanyyears.Followingthepublicationofrevisededitionsin1941and1943,SP-10wassubmittedtoSubcommitteeNo.2ofASASectionalCommitteeB16foradoptionasanAmericanStand-ard.FinalapprovalofthateditionwasgrantedonJanuary23,1947withthedesignationASAB16.15.AreaffirmationoftheStandardwasgrantedin1952andacompleterevisionforupdatingtheStandardwasapprovedbyASAonMarch25,1958.Afterrevisionin1944,SP-11wassubmittedtoSubcommitteeNo.2inAugust,1947andASAgrantedtheapprovalofB16.17onApril6,1949.In1961,SubcommitteeNo.2reviewedthetwoStandardsandnotedthatthehistoricalreasonfortheirseparateexistencenolongerapplied.Accordingly,thetwowerecombinedintoASAB16.15withfinalASAapprovalgrantedonFebruary6,1964.In1969,thedocumentwasreviewedbySubcommitteeNo.2andminorchangeswereproposed,FinalANSIapprovalwasgrantedonApril14,1971,In1977,theMSSsubmittedaproposedrevisiontoSubcommitteeB(formerlyNo.2)forB16reviewandapproval.Changesincludedtheadditionofmetric(SI)unitsandeditorialupdating.ANSI