BRITISHSTANDARDBSEN12284:2003Refrigeratingsystemsandheatpumps—Valves—Requirements,testingandmarkingTheEuropeanStandardEN12284:2003hasthestatusofaBritishStandardICS23.060.20����������������������������������������������������������������������LicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,SatJun3003:25:00GMT+00:002007,UncontrolledCopy,(c)BSIBSEN12284:2003ThisBritishStandard,waspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon26September2003©BSI26September2003ISBN0580426998NationalforewordThisBritishStandardistheofficialEnglishlanguageversionofEN12284:2003.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteeRHE/18,Refrigerationsafety,whichhastheresponsibilityto:Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.Cross-referencesTheBritishStandardswhichimplementinternationalorEuropeanpublicationsreferredtointhisdocumentmaybefoundintheBSICatalogueunderthesectionentitled“InternationalStandardsCorrespondenceIndex”,orbyusingthe“Search”facilityoftheBSIElectronicCatalogueorofBritishStandardsOnline.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.—aidenquirerstounderstandthetext;—presenttotheresponsibleinternational/Europeancommitteeanyenquiriesontheinterpretation,orproposalsforchange,andkeeptheUKinterestsinformed;—monitorrelatedinternationalandEuropeandevelopmentsandpromulgatethemintheUK.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,theENtitlepage,pages2to63andabackcover.TheBSIcopyrightnoticedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.AmendmentsissuedsincepublicationAmd.No.DateCommentsLicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,SatJun3003:25:00GMT+00:002007,UncontrolledCopy,(c)BSIEUROPEANSTANDARDNORMEEUROPÉE...