BS 4825-5-1991+A1-2009 食品工业及其他卫生设施用不锈钢管及配件.夹紧型连接件规

BRITISHSTANDARDBS4825-5:1991Stainlesssteeltubesandfittingsforthefoodindustryandotherhygienicapplications—Part5:Specificationforrecessedringjointtypecouplings+A1:2009ICS67.260;77.140.75BS4825-5:1991ThisBritishStandard,havingbeenpreparedunderthedirectionofthePipingSystemsComponentsStandardsPolicyCommittee,waspublishedundertheauthorityoftheStandardsBoardandcomesintoeffecton31January1992ThefollowingBSIreferencesrelatetotheworkonthisstandard:CommitteereferencePSE/8Draftforcomment88/72923DCISBNCommitteesresponsibleforthisBritishStandardThepreparationofthisBritishStandardwasentrustedbythePipingSystemsComponentsStandardsPolicyCommittee(PSE/-)toTechnicalCommitteePSE/8,uponwhichthefollowingbodieswererepresented:AdhesiveTapeManufacturers’AssociationBritishCompressedAirSocietyBritishGasplcBritishMalleableTubeFittingsAssociationBritishSteelIndustryBritishValveandActuatorManufacturers’AssociationBritishWeldedSteelTubeAssociationEngineeringEquipmentandMaterialsUsers’AssociationFoodandDrinkFederationInstitutionofCivilEngineersInstitutionofGasEngineersInstitutionofWaterandEnvironmentalManagementLargeDiameterSteelTubeAssociationMechanicalHandlingEngineers’AssociationStainlessSteelFabricators’AssociationofGreatBritainSteelTubeFittingsManufacturers’TechnicalAssociationWaterCompaniesAssociationWaterResearchCentreWaterServicesAssociationofEnglandandWalesCooptedmemberThefollowingbodieswerealsorepresentedinthedraftingofthestandard,throughsubcommitteesandpanels:BrewersSocietyDairyTradeFederationInstitutionofProductionEngineersMilkingMachineManufacturers’Association+A1:2009©BSI20099780580656439Amendment31August2009SeeforewordNo.1s,09/30194311DCBS4825-5:1991©BSIiContentsPageCommitteesresponsibleInsidefrontcoverForewordiii1Scope12Informationtobesuppliedbythepurchaser13Definitions14Symbols15Design26Materials77Dimensionsandtolerances78Surfacefinish79Assembly710Hygiene711Manufacturer’scertificate7AppendixAEssentialinformationtobesuppliedbythepurchaserintheenquiryand/ororder8AppendixBPurchaseroptions8AppendixCCrosssectionofcouplingassemblies8AppendixDScrewthreadsformalepartsandnuts9AppendixEGroovesforexpandedtypemalepartsandliners10AppendixFLockringsforexpandedtypemalepartsandliners11AppendixGGuideforexpandingwithstraighttube12AppendixHEffectofnon-metallicproductsonwaterquality15AppendixJMarking15Figure1—Expandedtypemalepart2Figure2—Expandedtypeliner3Figure3—Weldedtypemalepart4Figure4—Weldedtypeliner5Figure5—Hexagonnut6Figure6—Seal7Figure7—Crosssectionofexpandedtypecoupling8Figure8—Crosssectionofweldedtypecoupling8Figure9—Malepartthreadform9Figure10—Nutthreadform9Figure11—Dimensionsofgrooves10Figure12—Lockring11Figure13—Positioningoftubeandpartialexpansionofmalepart12Figure14—Finalexpansionoftubeontomalepart13Figure15—Positioningoftubeandpartialexpansionofliner14Figure16—Finalexpansionoftubeontoliner14Figure17—Cuttingchamferonexpandedtubeforliner14Table1—Expandedtypemalepart2Table2—Expandedtypeliner3Table3—Weldedtypemalepart4Table4—Weldedtypeliner5Table5—Hexagonnut6Table6—Seal7Table7—Malepart9+A1:20092009BS4825-5:1991ii©BSIPageTable8—Nut9Table9—Dimensionsofgrooves10Table10—Dimensionsoflockring11Table11—Steelhardness11Publication(s)referredto+A1:2009200917iiiForewordThisPartofBS4825hasbeenpreparedunderthedirectionofthePipingSystemsComponentsStandardsPolicyCommittee.BS4825ispublishedinfiveParts:—Part1:Specificationfortubes;—Part2:Specificationforbendsandtees;—Part3:Specificationforclamptypecouplings;—Part4:Specificationforthreadedtypecouplings;—Part5:Specificationforrecessedringjointtypecouplings.ThisPartofBS4825specifiesthedimensionaldetailsofallcomponentsforringjointtypefittingsandcoverssurfacefinish,manufacturer’scertificateandmarking.CouplingsspecifiedinBS4825areintendedforthefollowinguses:—Part3:whereeitherin-placecleaningorfrequentdismantlingisnecessary;—Part4:wherecleaningin-placetechniquesarenormallypractised;—Part5:wherepipingsystemsarefrequentlydismantled.TheessentialdifferencesbetweenthisPartofBS4825andBS1864:1966areasfollows.a)SpecificationsfortubesizesandmaterialsarenowgiveninBS4825-1.b)DimensionsforbendsandteesaregiveninBS4825-2.c)Dimensionsforstraightthroughandthreewaycockshavebeenwithdrawn.d)Therangeofsizeshasbeenextendedtoinclude4incouplings.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,pagesitoiv,pages1to1andabackcover.Thisstandardhasbeenupdated(seecopyrightdate)andmayhavehadamendmentsincorporated.Thiswillbeindicatedintheamendmenttableontheinsidefrontcover.BS4825-5:1991+A1:2009supersedesBS4825-5:1991,whichiswithdrawn.ThestartandfinishoftextintroducedoralteredbyAmendmentNo.1isindicatedinthetextbytags!.Minoreditorialchangesarenottagged.CompliancewithaBritishStandardcannotconferimmunityfromlegalobligations.BS4825-5:1991+A1:2009©BSI20097(IDFtype)ivblank11ScopeThisPartofBS4825specifiesthedimensions,tolerances,surfacefinish,materials,assemblyandhygienicrequirementsforweldedandexpandedtypemaleparts,liners,nutsandsealsforrecessedringjointtypefittingsforthefoodindustryandotherhygienicapplications.NOTE1Themalepar