BS 5163-2-2004

BRITISHSTANDARDBS5163-2:2004Valvesforwaterworkspurposes—Part2:Stemcapsforuseonisolatingvalvesandassociatedwatercontrolapparatus—SpecificationICS23.060.30

 
 BS5163-2:2004ThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon23December2004©BSI23December2004FirstpublishedOctober1974FirstrevisionOctober1986FirstpublishedasPart2December2004ThefollowingBSIreferencesrelatetotheworkonthisBritishStandard:CommitteereferencePSE/7/3Draftforcomment04/30111467DCISBN058044712XCommitteesresponsibleforthisBritishStandardThepreparationofthisBritishStandardwasentrustedbyTechnicalCommitteePSE/7,Industrialvalves,toSubcommitteePSE/7/3,Castironisolating,checkandhydrantvalvesforindustrialuseandvalvesforwaterindustryapplications,uponwhichthefollowingbodieswererepresented:BritishChemicalEngineeringContractorsAssociationBVAA—BritishValveandActuatorAssociationCMF—CastMetalsFederationDuctileIronProducersAssociationEnergyIndustriesCouncilInstitutionofMechanicalEngineersPipelineIndustriesGuildSocietyofBritishWaterIndustriesWaterUKAmendmentsissuedsincepublicationAmd.No.DateCommentsBS5163-2:2004©BSI23December2004iContentsPageCommitteesresponsibleInsidefrontcoverForewordii1Scope12Normativereferences13Termsanddefinitions14Designrequirements35Preparingforstorageandtransport4AnnexA(normative)Testmethodfortheresistanceofstemcapstooperatingloads5Bibliography7Figure1—Ringkeyandbar2Figure2—Tkey3Figure3—Typicalstemcap4Table1—Dimensionsofstemcaps3BS5163-2:2004ii©BSI23December2004ForewordThispartofBS5163hasbeenpreparedunderthedirectionofTechnicalCommitteePSE/7tofacilitatetheapplicationofBSEN1074-1:2000,BSEN1074-2:2000andBSEN1074-6:2004.AlongwithBS5163-1:2004,BSEN1074-1:2000andBSEN1074-2:2000,thisstandardsupersedesBS5163:1986,whichiswithdrawn.ThisstandardgivesdetailsofstemcapsnotcoveredinBSEN1074-1:2000,BSEN1074-2:2000orBSEN1074-6:2004.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,pagesiandii,pages1to7andabackcover.TheBSIcopyrightnoticedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.BS5163-2:2004©BSI23December200411ScopeIsolatingvalvesandhydrantsinstalledinundergroundpipelinesprimarilycarryingwaterintendedforhumanconsumptionwithintheUnitedKingdomarerequiredtobefittedwithastemcaptoenablethemtobeoperatedbyaring-keyandbarorT-shapedkey.Thestemcapisfittedtothetopofthevalvestemtoconvertthemanufacturer’sstemconfigurationtomatewithoperatingkeys.Twosizesofstemcaparespecified,coveringrespectively,valvesfromDN50throughDN300andDN350throughDN600.NOTEStemcapsarealsocommonlyusedonotherwaterworksapparatus,e.g.penstocks(specifiedinBS7775).2NormativereferencesThefollowingreferenceddocumentsareindispensablefortheapplicationofthisdocument.Fordatedreferences,onlytheeditioncitedapplies.Forundatedreferences,thelatesteditionofthereferenceddocument(includinganyamendments)applies.BS6615:1996/ISO8062:1994,Specificationfordimensionaltolerancesformetalandmetalalloycastings.BSEN1074-1,Valvesforwatersupply—Fitnessforpurposerequirementsandappropriateverificationtests—Part1:Generalrequirements.BSEN1074-2,Valvesforwatersupply—Fitnessforpurposerequirementsandappropriateverificationtests—Part2:Isolatingvalves.BSEN1074-6,Valvesforwatersupply—Fitnessforpurposerequirementsandappropriateverificationtests—Part6:Hydrants.BSEN1503-3,Valves—Materialsforbodies,bonnetsandcovers—Part3:CastironsspecifiedinEuropeanStandards.3TermsanddefinitionsForthepurposesofthispartofBS5163,thefollowingtermsanddefinitionsapply.3.1stemcapdevicetoenablevalvesofdifferentsizesandstemconfigurationstobeoperatedbystandardoperatingkeysNOTE1Astemcapisanoperatingelement.SeealsoBSEN736-2.NOTE2ThesocketendofoperatingkeysshouldbedimensionallyinaccordancewithBS336forvalvesuptoDN300.3.2ringkeyandbaroperatingkeywithasocketatitslowerend,whichengageswiththestemcaponthevalveorhydrant,andaringattheupperendtoenableabartobeinserted,whichcanthenbeusedmanuallytoturnthevalvestemNOTEAringkeyandbarisillustratedinFigure1.3.3Tkeyoperatingkeysimilartoaringkeyandbarbuthavingafixedshort-lengthupperbarattachedcentrallyatrightanglestotheshaftNOTEATkeyisillustratedinFigure2.BS5163-2:20042©BSI23December20043.4mSTminimumstrengthtorqueasspecifiedinBSEN1074-1,BSEN1074-2andBSEN1074-6NOTEThissketchisdiagrammaticonly.Figure1—RingkeyandbarBS5163-2:2004©BSI23December200434Designrequirements4.1Materials4.1.1StemcapmaterialsshallbeselectedfromthoselistedinBSEN1503-3.4.1.2Castironcomponentsshallbefullycoatedtoprovideprotectionagainstcorrosion.4.1.3Componentsusedtosecurestemcapstovalvestemsshallberesistanttocorrosionandageingbytheselectionofmaterials,orshallbeprotectedbyappropriatemeans.4.2Dimensions4.2.1StemcapsshallcomplywiththedimensionsgiveninTable1andFigure3.Theyshallbesecurelyattachedtothevalvestemandbedesignedinsuchamannerthattheycan