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BRITISHSTANDARDBS5150:1990SpecificationforCastirongatevalvesUDC621.646.5:669.13BS5150:1990ThisBritishStandard,havingbeenpreparedunderthedirectionofthePipingSystemsComponentsStandardsPolicyCommittee,waspublishedundertheauthorityoftheBoardofBSIandcomesintoeffecton31May1990©BSI01-1999Firstpublished,asBS464,January1962FirstrevisionNovember1965Secondrevision,publishedasBS5150,September1974ThirdrevisionMay1990ThefollowingBSIreferencesrelatetotheworkonthisstandard:CommitteereferencePSE/7Draftforcomment88/74715DCISBN0580183718CommitteesresponsibleforthisBritishStandardThepreparationofthisBritishStandardwasentrustedbythePipingSystemsComponentsStandardsPolicyCommittee(PSE/-)toTechnicalCommitteePSE/7,uponwhichthefollowingbodieswererepresented:AmalgamatedUnionofEngineeringWorkersAssociationOfficesTechnicalCommitteeAssociationofBronzeandBrassFoundersAssociationofBuildingComponentManufacturersLtd.BritishChemicalEngineeringContractors’AssociationBritishCompressedGases’AssociationBritishFoundryAssociationBritishGasplcBritishMaritimeTechnologyBritishPlumbingFittingsManufacturers’AssociationBritishValveandActuatorManufacturers’AssociationCharteredInstitutionofBuildingServicesEngineersCopperDevelopmentAssociationDepartmentoftheEnvironment(PropertyServicesAgency)ElectricitySupplyIndustryinEnglandandWalesEnergyIndustriesCouncilEngineeringEquipmentandMaterialsUsers’AssociationGAMBICA(BEAMALtd.)HealthandSafetyExecutiveInstituteofBritishFoundrymenInstitutionofChemicalEngineersInstitutionofGasEngineersInstitutionofMechanicalEngineersInstitutionofWaterandEnvironmentalManagement(IWEM)SocietyofBritishGasIndustriesWaterCompanies’AssociationWaterServicesAssociationofEnglandandWalesWestMidlandsCBIThefollowingbodieswerealsorepresentedinthedraftingofthestandard,throughsub-committeesandpanels:BritishEffluentandWaterAssociationBritishNon-ferròusMetalsFederationAmendmentsissuedsincepublicationAmd.No.DateofissueCommentsBS5150:1990©BSI01-1999iContentsPageCommitteesresponsibleInsidefrontcover...