BS EN 1759-1 2004

BRITISHSTANDARDBSEN1759-1:2004Flangesandtheirjoints—Circularflangesforpipes,valves,fittingsandaccessories,Classdesignated—Part1:Steelflanges,NPS1/2to24TheEuropeanStandardEN1759-1:2004hasthestatusofaBritishStandardICS23.040.60

 
 LicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,MonApr0210:17:07GMT+00:002007,UncontrolledCopy,(c)BSIBSEN1759-1:2004ThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon30November2004©BSI30November2004ISBN0580449246NationalforewordThisBritishStandardistheofficialEnglishlanguageversionofEN1759-1:2004.ItsupersedesBS1560-3.1:1989whichiswithdrawn.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteePSE/15,Flanges,whichhastheresponsibilityto:Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.Cross-referencesTheBritishStandardswhichimplementinternationalorEuropeanpublicationsreferredtointhisdocumentmaybefoundintheBSICatalogueunderthesectionentitled“InternationalStandardsCorrespondenceIndex”,orbyusingthe“Search”facilityoftheBSIElectronicCatalogueorofBritishStandardsOnline.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.—aidenquirerstounderstandthetext;—presenttotheresponsibleinternational/Europeancommitteeanyenquiriesontheinterpretation,orproposalsforchange,andkeeptheUKinterestsinformed;—monitorrelatedinternationalandEuropeandevelopmentsandpromulgatethemintheUK.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,theENtitlepage,pages2to74,aninsidebackcoverandabackcover.TheBSIcopyrightnoticedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.AmendmentsissuedsincepublicationAmd.No.DateCommentsLicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,MonApr0210:17:07GMT+00:002007,UncontrolledCopy,(c)BSIEUROPEANSTANDARDNORMEEUROPÉENNEEUROPÄISCHENORMEN1759-1November2004ICS23.040.60EnglishversionFlangesandtheirjoints-Circularflangesforpipes,valves,fittingsandaccessories,Classdesignated-Part1:Steelflanges,NPS1/2to24Bridesetleursassemblages-Bridescirculairespourtubes,appareilsderobinetterie,raccordsetaccessoires,désignéesClass-Partie1:BridesenacierNPS1/2à24FlanscheundihreVerbindungen-RundeFlanschefürRohre,Armaturen,FormstückeundZubehörteile,nachClassbezeichnet-Teil1:Stahlflansche,NPS1/2bis24ThisEuropeanStandardwasapprovedbyCENon30September2004.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,Slovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom.EUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITÉEUROPÉENDENORMALISATIONEUROPÄISCHESKOMITEEFÜRNORMUNGManagementCentre:ruedeStassart,36B-1050Brussels©2004CENAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.Ref.No.EN1759-1:2004:ELicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,MonApr0210:17:07GMT+00:002007,UncontrolledCopy,(c)BSIEN1759-1:2004(E)2ContentsPageForeword......................................................................................................................................................................3Introduction.................................................................................................................................................................41Scope..............................................................................................................................................................52Normativereferences....................................................................................................................................53Termsanddefinitions...................................................................................................................................64Designation....................................................................................................................................................75Generalrequirements....................................................................................................................................8AnnexA(informative)Recommendationsforweldendsofweld-neckflanges............................................