BRITISHSTANDARDBSEN558:2008Industrialvalves—Face-to-faceandcentre-to-facedimensionsofmetalvalvesforuseinflangedpipesystems—PNandClassdesignatedvalvesICS23.060.01����������������������������������������������������������������������BSEN558:2008ThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon30May2008©BSI2008ISBN9780580552519NationalforewordThisBritishStandardistheUKimplementationofEN558:2008.ItsupersedesBSEN558-1:1996andBSEN558-2:1996,whicharewithdrawn.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteePSE/7,Industrialvalves.Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandardcannotconferimmunityfromlegalobligations.Amendments/corrigendaissuedsincepublicationDateCommentsEUROPEANSTANDARDNORMEEUROPÉENNEEUROPÄISCHENORMEN558January2008ICS23.060.10SupersedesEN558-1:1995,EN558-2:1995EnglishVersionIndustrialvalves-Face-to-faceandcentre-to-facedimensionsofmetalvalvesforuseinflangedpipesystems-PNandClassdesignatedvalvesRobinetterieindustrielle-Dimensionsface-à-faceetface-à-axedelarobinetteriemétalliqueutiliséedanslessystèmesdecanalisationsàbrides-AppareilsderobinetteriedésignésPNetClassIndustriearmaturen-BaulängenvonArmaturenausMetallzumEinbauinRohrleitungenmitFlanschen-NachPNundClassbezeichneteArmaturenThisEuropeanStandardwasapprovedbyCENon14December2007.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCENManagementCentreortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagema...
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