BS EN 558-2-1996 Industrial valves — Face-to-face

BRITISHSTANDARDBSEN558-2:1996Industrialvalves—Face-to-faceandcentre-to-facedimensionsofmetalvalvesforuseinflangedpipingsystems—Part2:Class-designatedvalvesTheEuropeanStandardEN558-2:1995hasthestatusofaBritishStandardICS23.060.00LicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,MonJul2310:26:08GMT+00:002007,UncontrolledCopy,(c)BSIBSEN558-2:1996ThisBritishStandard,havingbeenpreparedunderthedirectionoftheEngineeringSectorBoard,waspublishedundertheauthorityoftheStandardsBoardandcomesintoeffecton15May1996©BSI06-1999ThefollowingBSIreferencesrelatetotheworkonthisstandard:CommitteereferencePSE/7Draftforcomment91/81549DCISBN058024721XCommitteesresponsibleforthisBritishStandardThepreparationofthisBritishStandardwasentrustedtoTechnicalCommitteePSE/7,Valves,uponwhichthefollowingbodieswererepresented:AmalgamatedEngineeringUnionAssociationofBronzeandBrassFoundersBritishFoundryAssociationBritishGasplcBritishPlumbingFittingsManufacturers’AssociationBritishValveandActuatorManufacturers’AssociationBritishWaterCharteredInstitutionofBuildingServicesEngineersElectricityAssociationEnergyIndustriesCouncilEngineeringEquipmentandMaterialsUsers’AssociationGAMBICA(BEAMA)Ltd.HealthandSafetyExecutiveInstitutionofMechanicalEngineersLPGasAssociationPipelineIndustriesGuildSocietyofBritishWaterIndustriesWaterServicesAssociationofEnglandandWalesWestMidlandsCBICooptedmembersAmendmentsissuedsincepublicationAmd.No.DateCommentsLicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,MonJul2310:26:08GMT+00:002007,UncontrolledCopy,(c)BSIBSEN558-2:1996©BSI06-1999iContentsPageCommitteesresponsibleInsidefrontcoverNationalforewordiiForeword2TextofEN558-23ListofreferencesInsidebackcoverLicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,MonJul2310:26:08GMT+00:002007,UncontrolledCopy,(c)BSIBSEN558-2:1996ii©BSI06-1999NationalforewordThisBritishStandardhasbeenpreparedbyTechnicalCommitteePSE/7andistheEnglishlanguageversionofEN558-2:1995Industrialvalves—Face-to-faceandcentre-to-facedimensionsofmetalvalvesforuseinflangedpipesystems—Part2:Class-designatedvalves,publishedbytheEuropeanCommitteeforStandardization(CEN).EN558-2wasproducedastheresultofinternationaldiscussionsinwhichtheUnitedKingdomtookanactivepart.TogetherwithBSEN558-1:1989,itpartiallysupersedesBS2080:1989,whichhasbeenamended.ABritishStandarddoesnotpurporttoincludeallthenecessaryprovisionsofacontract.UsersofBritishStandardsareresponsiblefortheircorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.Cross-referencePublicationreferredtoCorrespondingBritishStandardEN26554:1991BSEN26554:1991Specificationforface-to-facedimensionsforflangedautomaticsteamtrapsSummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,pagesiandii,theENtitlepage,pages2to24,aninsidebackcoverandabackcover.Thisstandardhasbeenupdated(seecopyrightdate)andmayhavehadamendmentsincorporated.Thiswillbeindicatedintheamendmenttableontheinsidefrontcover.LicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,MonJul2310:26:08GMT+00:002007,UncontrolledCopy,(c)BSIEUROPEANSTANDARDNORMEEUROPÉENNEEUROPÄISCHENORMEN558-2March1995ICS23.060.00Descriptors:Industrialvalves,valves-andfittings,flangedvalves,metallurgicalproducts,dimensions,dimensionaltolerancesEnglishversionIndustrialvalves—Face-to-faceandcentre-to-facedimensionsofmetalvalvesforuseinflangedpipesystems—Part2:Class-designatedvalvesRobinetterieindustrielle—Dimensionsface-à-faceetface-à-axedelarobinetteriemétalliqueutiliséedanslessystèmesdecanalisationsàbrides—Partie2:AppareilsderobinetteriedésignésClassIndustriearmaturen—BaulängenvonArmaturenausMetallzumEinbauinRohrleitungenmitFlanschen—Teil2:NachClassbezeichneteArmaturenThisEuropeanStandardwasapprovedbyCENon1995-10-16.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlangagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom.CENEuropeanCommitteeforStandardizationComitéEuropéendeNormalisationEuropäischesKomiteefürNormungCentralSecretariat:ruedeStassart36,B-1050Brussels©1995AllrightsofreproductionandcommunictioninanyformandbyanymeansreservedinallcountriestoCENanditsmembers.Ref.No.EN558-2:1995ELicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,MonJul2310:26:08GMT+00:002007,UncontrolledCopy,(c)BSIEN558-2:1995©BSI06-19992ForewordThisEuropeanStandardhasbeenpreparedbyTechnicalCommitteeCEN/TC69,Industrialvalves,