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1、InternationalStandardISO12101Firstedition2025-06IndustrialvalvesMeasurement,testandqualificationproceduresforfugitiveemissions一ClassificationsystemandqualificationproceduresfortypetestingofstemsealsforvalvesRobinetterieindustrielleMesuragefessaisetmodesoperatoiresdequalificationpouremissionsfugitive
2、sSystemedeclassificationetmodesoperatoiresdequalificationpourlesessaisdetypedesdispositifsd,etancheitedelatigedesappareilsderobinetterieReferencenumberISO12101:2025(en)COPYRIGHTPROTECTEDDOCUMENTISO2025Allrightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsimplementation,nopartofthispu
3、blicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO,smemberbodyinthecountryoftherequester.ISOcopyrightofficeCP401Ch.d
4、eBlandonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyrightiso.orgWebsite:www.iso.orgPublishedinSwitzerlandContentsPageForewordivIntroductionv1 Scope12 Normativereferences13 Termsanddefinitions14 Typetest24.1 Testfacility24.2 Stemsealtype34.2.1 General34.2.2 Adjustablesealing(compression)34.2
5、.3 Non-adjustablesealingstacks:springandpressureenergizedseals44.2.4 Non-adjustablesealing:elastomers54.3 Testfixtures64.3.1 General64.3.2 Preparationofavalvestemsealtobetested64.3.3 Testfluid64.3.4 Testtemperature74.3.5 Leakagemeasurement84.4 Testprocedures94.4.1 Safetyrules94.4.2 Testequipment94.4
6、.3 Stemsealadjustment94.4.4 Testdescription105 Performanceclasses125.1 Classificationcriteria125.2 Tightnessclasses135.2.1 Definition135.2.2 Heliumastestfluid135.2.3 Methaneastestfluid135.2.4 Correlations135.3 Enduranceclasses145.3.1 Mechanical-cycleclassessimulatingisolatingvalvesstemsealing145.3.2
7、 Mechanical-cycleclassesforcontrolvalvestemsealing155.3.3 Stemmovement165.4 Temperaturerange165.5 Stemsealperformanceclassdesignation176 Testreport177 Extensionofqualificationtountestedstemseals20AnnexA(informative)Testfixtureconstructionsexample21Bibliography24ForewordISO(theInternationalOrganizati
8、onforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Int
9、ernationalorganizations,governmentalandnon-governmental,inliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.Theproceduresusedtodevelopthisdocumentandthoseintendedforitsfurthermaintenancearedescr
10、ibedintheISO/IECDirectives,Part1.Inparticular,thedifferentapprovalcriterianeededforthedifferenttypesofISOdocumentshouldbenoted.ThisdocumentwasdraftedinaccordancewiththeeditorialrulesoftheISO/IECDirectives,Part2(seeWWW.iso.org/directives).ISOdrawsattentiontothepossibilitythattheimplementationofthisdo
11、cumentmayinvolvetheuseof（八）patent(三).ISOtakesnopositionconcerningtheevidence,validityorapplicabilityofanyclaimedpatentrightsinrespectthereof.Asofthedateofpublicationofthisdocument,ISOhadnotreceivednoticeof（八）patent(三)whichmayberequiredtoimplementthisdocument.However,implementersarecautionedthatthism
12、aynotrepresentthelatestinformation,whichmaybeobtainedfromthepatentdatabaseavailableatWWW.iso.org/patents.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Foranexplanationofthev
13、oluntarynatureofstandards,themeaningofISOspecifictermsandexpressionsrelatedtoconformityassessment,aswellasinformationaboutISOsadherencetotheWorldTradeOrganization(WTo)principlesintheTechnicalBarrierstoTrade(TBT),seewww.iso.org/iso/foreword.htmLThisdocumentwaspreparedbyTechnicalCommitteeISO/TC153,Val
14、ves.Anyfeedbackorquestionsonthisdocumentshouldbedirectedtotheusersnationalstandardsbody.Acompletelistingofthesebodiescanbefoundatwww.iso.org/members.html.IntroductionTheobjectiveofthisdocumentistoestablishtestmethodstoevaluatetheperformanceofdifferentdesignsandconstructionsofstemsealingforvalvesinor
15、dertoreducefugitiveemissions.Theresultsfromthetestingprovideameansofclassificationandqualificationundervarioustestconditions.ThisclassificationwillhelpvalvemanufacturerstochooseasuitablestemsealsystemtoallowvalvetestinginaccordancewithISO15848-1.Theproceduresofthisdocumentcanonlybeusedwiththeapplicationofnecessaryprecautionsfortestingwithflammableorinertgasattemperatureandunderpressure.IndustrialvalvesMeasurement,testandqualificationproceduresforfugitiveemissionsClassificationsystemandqualificationproceduresfortypetestingofstemsealsforvalves1 ScopeThi
