BRITISHSTANDARDBSEN736-3:1999IncorporatingAmendmentNo.1Valves—Terminology—Part3:DefinitionoftermsTheEuropeanStandardEN736-3:1999,withtheincorporationofamendmentA1:2001,hasthestatusofaBritishStandardICS01.040.23;23.060.01 CopyrightBritishStandardsInstitutionReproducedbyIHSunderlicensewithBSI-UncontrolledCopyDocumentprovidedbyIHSLicensee=BureauVeritas/5959906001,11/08/200405:35:15MSTQuestionsorcommentsaboutthismessage:pleasecalltheDocumentPolicyGroupat303-397-2295.--`,,,,``,`,,,,`,,,`,,`,`,``,,-`-`,,`,,`,`,,`---BSEN736-3:1999ThisBritishStandard,havingbeenpreparedunderthedirectionoftheEngineeringSectorCommittee,waspublishedundertheauthorityoftheStandardsCommitteeandcomesintoeffecton15August1999©BSI24October2002ISBN0580326764NationalforewordThisBritishStandardistheEnglishlanguageversionofEN736-3:1999,includingamendmentA1:2001.TheUKparticipationinitspreparationwasentrustedbyTechnicalCommitteePSE/7,Valves,toSubcommitteePSE/7/1,Valves—Basicstandards,whichhastheresponsibilityto:Alistoforganizationsrepresentedonthissubcommitteecanbeobtainedonrequesttoitssecretary.Cross-referencesTheBritishStandardswhichimplementinternationalorEuropeanpublicationsreferredtointhisdocumentmaybefoundintheBSICatalogueunderthesectionentitled“InternationalStandardsCorrespondenceIndex”,orbyusingthe“Search”facilityoftheBSIElectronicCatalogueorofBritishStandardsOnline.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.—aidenquirerstounderstandthetext;—presenttotheresponsibleEuropeancommitteeanyenquiriesontheinterpretation,orproposalsforchange,andkeeptheUKinterestsinformed;—monitorrelatedinternationalandEuropeandevelopmentsandpromulgatethemintheUK.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,theENtitlepage,pages2to8,aninsidebackcoverandabackcover.TheBSIcopyrightnoticedisplayedthroughoutthedocumentindicateswhenthedocumentwaslastissued.AmendmentsissuedsincepublicationAmd.No.DateComments1409424October2002Changesto3.3.7CopyrightBritishStandardsInstitutionReproducedbyIHSunderlicensewithBSI-UncontrolledCopyDocumentprovidedbyIHSLicensee=BureauVeritas/5959906001,11/08/200405:35:15MSTQuestionsorcommentsaboutthismessage:pleasecalltheDocumentPolicyGroupat303-397-2295.--`,,,,``,`,,,,`,,,`,,`,`,``,,-`-`,,`,,`,`,,`---EUROPEANSTANDARDNORMEEUROPÉENNEEUROPÄISCHENORMEN736-3May1999+A1September2001ICS01.040.23;23.060.01EnglishversionValves—Terminology—Part3:Definitionofterms(includingamendmentA1:2001)Appareilsderobinetterie—Terminologie—Partie3:Definitiondestermes(inclutl’amendementA1:2001)Armaturen—Terminologie—Teil3:DefinitionvonBegriffen(enthältÄnderungA1:2001)ThisEuropeanStandardwasapprovedbyCENon16April1999.AmendmentA1wasapprovedbyCENon22June2001.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom.CENEuropeanCommitteeforStandardizationComitéEuropéendeNormalisationEuropäischesKomiteefürNormungCentralSecretariat:ruedeStassart36,B-1050Brussels©1999CENAllrightsofreproductioninanyformandbyanymeansreservedworldwideforCENnationalMembers.Ref.No.EN736-3:1999+A1:2001ECopyrightBritishStandardsInstitutionReproducedbyIHSunderlicensewithBSI-UncontrolledCopyDocumentprovidedbyIHSLicensee=BureauVeritas/5959906001,11/08/200405:35:15MSTQuestionsorcommentsaboutthismessage:pleasecalltheDocumentPolicyGroupat303-397-2295.--`,,,,``,`,,,,`,,,`,,`,`,``,,-`-`,,`,,`,`,,`---EN736-3:1999©BSI24October20022ForewordThisEuropeanStandardhasbeenpreparedbyTechnicalCommitteeCEN/TC69,Industrialvalves,theSecretariatofwhichisheldbyAFNOR.ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextorbyendorsement,atthelatestbyNovember1999,andconflictingnationalstandardsshallbewithdrawnatthelatestbyNovember1999.ThisEuropeanStandardhasbeenpreparedunderamandategiventoCENbytheEuropeanCommissionandtheEuropeanFreeTradeAssociation.ThisEuropeanStandardisconsideredtobeasupportingstandardtothoseapplicationsandproductstandardswhichinthemselvessupportanessentialsafetyrequirementofaNewApproachDirectiveandwhichmakereferencetothisEuropeanStandard.AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowingcountriesareboundtoimpl