1、BSISO12101:2025IndustrialvalvesMeasurement,testandqualificationproceduresforfugitiveemissions一Classificationsystemandqualificationproceduresfortypetestingofstemsealsforvalvesbsi.NationalforewordThisBritishStandardistheUKimplementationofISO12101:2025.TheUKparticipationinitspreparationwasentrustedtoTe
2、chnicalCommitteePSE18Industrialvalves,steamtraps,actuatorsandsafetydevicesagainstexcessivepressure-Valves-Basicstandards.Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitscommitteemanager.ContractualandlegalconsiderationsThispublicationhasbeenpreparedingoodfaith,howevernorepre
3、sentation,warranty,assuranceorundertaking(expressorimplied)isorwillbemade,andnoresponsibilityorliabilityisorwillbeacceptedbyBSIinrelationtotheadequacy,accuracy,completenessorreasonablenessofthispublication.Allandanysuchresponsibilityandliabilityisexpresslydisclaimedtothefullextentpermittedbythelaw.T
4、hispublicationisprovidedasis,andistobeusedattherecipientsownrisk.Therecipientisadvisedtoconsiderseekingprofessionalguidancewithrespecttoitsuseofthispublication.Thispublicationisnotintendedtoconstituteacontract.Usersareresponsibleforitscorrectapplication.TheBritishStandardsInstitution2025PublishedbyB
5、SIStandardsLimited2025ISBN9780539194487ICS23.060.01CompliancewithaBritishStandardcannotconferimmunityfromlegalobligations.ThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon30June2025.Amendments/corrigendaissuedsincepublicationDateTextaffectedBSISO12101:2025Int
6、ernationalStandardISO12101Firstedition2025-06IndustrialvalvesMeasurement,testandqualificationproceduresforfugitiveemissions一ClassificationsystemandqualificationproceduresfortypetestingofstemsealsforvalvesRobinetterieindustrielleMesurage,essaisetmodesoperatoiresdequalificationpouremissionsfugitivesSy
7、stemedeclassificationetmodesoperatoiresdequalificationpourlesessaisdetypedesdispositifsdetancheitedelatigedesappareilsderobinetterieReferencenumberISO12101:2025(en)COPYRIGHTPROTECTEDDOCUMENTISO2025Allrightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsimplementation,nopartofthispublic
8、ationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO,smemberbodyinthecountryoftherequester.ISOcopyrightofficeCP401Ch.deBla
9、ndonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyrightiso.orgWebsite:www.iso.orgPublishedinSwitzerlandContentsPageForewordivIntroductionv1 Scope12 Normativereferences13 Termsanddefinitions14 Typetest24.1 Testfacility24.2 Stemsealtype34.2.1 General34.2.2 Adjustablesealing(compression)34.2.3 N
10、on-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 Testequipment94.4.3 S
11、temsealadjustment94.4.4 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 Mec
12、hanical-cycleclassesforcontrolvalvestemsealing155.3.3 Stemmovement165.4 Temperaturerange165.5 Stemsealperformanceclassdesignation176 Testreport177 Extensionofqualificationtountestedstemseals20AnnexA(informative)Testfixtureconstructionsexample21Bibliography24ForewordISO(theInternationalOrganizationfo
13、rStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Interna
14、tionalorganizations,governmentalandnon-governmentabinliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.Theproceduresusedtodevelopthisdocumentandthoseintendedforitsfurthermaintenancearedescribedi
15、ntheISO/IECDirectives,Part1.Inparticular,thedifferentapprovalcriterianeededforthedifferenttypesofISOdocumentshouldbenoted.ThisdocumentwasdraftedinaccordancewiththeeditorialrulesoftheISO/IECDirectives,Part2(seewww.iso.org/directives).ISOdrawsattentiontothepossibilitythattheimplementationofthisdocumen
16、tmayinvolvetheuseof（八）patent(三).ISOtakesnopositionconcerningtheevidence,validityorapplicabilityofanyclaimedpatentrightsinrespectthereof.Asofthedateofpublicationofthisdocument,ISOhadnotreceivednoticeof（八）patent(三)whichmayberequiredtoimplementthisdocument.However,implementersarecautionedthatthismaynot
17、representthelatestinformation,whichmaybeobtainedfromthepatentdatabaseavailableatwww.iso.org/patents.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Foranexplanationofthevolunt
18、arynatureofstandards,themeaningofISOspecifictermsandexpressionsrelatedtoconformityassessment,aswellasinformationaboutISOsadherencetotheWorldTradeOrganization(WTo)principlesintheTechnicalBarrierstoTrade(TBT),seeWWW.isoQrgisoforeword.htmLThisdocumentwaspreparedbyTechnicalCommitteeISO/TC153,Valves.Anyf
19、eedbackorquestionsonthisdocumentshouldbedirectedtotheusersnationalstandardsbody.AcompletelistingofthesebodiescanbefoundatWWW.isoQrgmembnrs.htmLIntroductionTheobjectiveofthisdocumentistoestablishtestmethodstoevaluatetheperformanceofdifferentdesignsandconstructionsofstemsealingforvalvesinordertoreduce
20、fugitiveemissions.Theresultsfromthetestingprovideameansofclassificationandqualificationundervarioustestconditions.ThisclassificationwillhelpvalvemanufacturerstochooseasuitablestemsealsystemtoallowvalvetestinginaccordancewithISO15848-1.Theproceduresofthisdocumentcanonlybeusedwiththeapplicationofneces
21、saryprecautionsfortestingwithflammableorinertgasattemperatureandunderpressure.BSISO12101:2025IndustrialvalvesMeasurement,testandqualificationproceduresforfugitiveemissionsClassificationsystemandqualificationproceduresfortypetestingofstemsealsforvalves1 ScopeThisdocumentcoversthetypetestingofvalveste
22、msealsusingatestfixturethatisdesignedandfullydefinedtoberepresentativeoftheperformanceofavalveusingsimilargeometry.Thisdocumentisapplicabletostemsealsformulti-turn,linearandquarterturnvalves.Itisintendedtoprovidecomparativetypetestresultsconfirmingtheperformanceofsealmanufacturersstemsealdesigns.Thi
23、sdocumentisnotintendedtoreplacetypetestingofcompletevalveassembliesorvalveproductiontesting.CompliancewiththisdocumentisnotintendedtobeamandatoryqualificationtesttobecompletedforastemsealdesignpriortotestingavalvetotherequirementsofISO15848-1.Compressiblesealswithandwithoutliveloading,elastomersandp
24、ressureenergizedsealsareinthescopeofthisdocument.Corrosiontestsarenotincludedinthisdocument.2 NormativereferencesThefollowingdocumentsarereferredtointhetextinsuchawaythatsomeoralloftheircontentconstitutesrequirementsofthisdocument.Fordatedreferences,onlytheeditioncitedapplies.Forundatedreferences,th
25、elatesteditionofthereferenceddocument(includinganyamendments)applies.ISO15848-1:2015,IndustrialvalvesMeasurement,testandqualificationproceduresforfugitiveemissionsParti:Classificationsystemandqualificationproceduresfortypetestingofvalves3 TermsanddefinitionsForthepurposesofthisdocument,thetermsandde
26、finitionsgiveninISO15848-1andthefollowingapply.ISOandIECmaintainterminologydatabasesforuseinstandardizationatthefollowingaddresses:一ISOOnlinebrowsingplatform:availableathttps:WWW.iso.org/obp一IECElectropedia:availableathttps:WWW.olectropedia.org/3.1liveloadingapplicationofaloadtotheglandfollowerofadj
27、ustablecompressionstemsealsusingastoredenergydevicesuchasaspring3.2 quarter-turnstemQTtestfixturedesignedtosimulatemovementofavalvetothefullyopenorclosepositionwithapproximately90orotationofthestem3.3non-rotatingrisingstemNRRStestfixturedesignedtosimulatevalvestemmovementinanaxialdirection,withnorot
28、ation3.4rotatingnon-risingstemRNRStestfixturedesignedtosimulateavalveinwhichthestemmovementconsistsofoneormultiplerotationsbutwithnomovementofthesteminanaxialdirection3.5rotatingrisingstemRRStestfixturedesignedtosimulateavalveinwhichthemovementofthestemisinanaxialdirection,withrotation3.6sealhousing
29、metalliccomponent(三)containingnon-adjustableelastomer,springandpressureenergizedsealstack(3.7)3.7sealstackseveralindividualsealingelements,atleastoneofwhichisenergizedbyaspringorelastomer,whichcanhavedifferentprofilesarrangedinadefinedsequencetoformanon-adjustablespringandpressureenergizedstemsealas
30、sembly3.8stemmovementstroke/angleforstrokingthestem3.9testfixtureteststandpackingglandand/orsealhousingconstructedasafixturedesignedtosimulateatypicalvalve3.10temperaturerangeminimumandmaximumtemperaturesatwhichastemsealistestedtoassessitsperformance,behaviour,suitabilityandtightness3.11fullratedtra
31、velofstemmaximumstroke/anglemovementofthestemtoopenandclosethefixtureinwhichthesealhasbeentestedNote1toentry:Fullratedtravelisdefinedastwotimesthestroke.4 Typetest4.1 TestfacilityThetestsshallbecarriedoutatthemanufacturingfacilitiesoratanexternalfacility.However,asinglesetofminimumrequirementsshallb
32、eestablishedforbothfacilities.Theserequirementscaninclude,butarenotlimitedto:demonstrationofthecapabilitytoperformrequiredtests,inspections,analysisandexaminations,intermsofbothpersonnelqualificationandequipmentavailability;一aqualitymanagementsystem;一ahealth,safetyandenvironmentmanagementsystem;一fam
33、iliaritywithpressureandleakagetestingstandards,aswellasthereportingofthetestresults(inappropriateformats).4.2 Stemsealtype4.2.1 GeneralCompressionpackingisawidelyusedstemsealtypeinindustrialvalves.Butasignificantnumberofindustrialvalvesusesstemsealdesignsotherthancompressionpacking,e.g.partturnrotar
34、yvalves,highpressureglobevalves.Manyindustrialvalveapplicationswherefugitiveemissionsarecriticalusepressureenergisedsealsystems(e.g.elastomers,pressureenergisedlipseals),duetothehighsealingperformanceandlowmaintenancerequirementsofthesedesigns.Astandardizedorspeciallymanufacturedtestfixtureshallbeus
35、edtoteststemsealsbyperformingtestsattheexperimentalconditionsspecifiedbythisdocument.Ifthecapabilityofthetestfixturedoesnotmeetthespecifiedtestconditions,onlytemperatureandpressureconditionscoveredbythetestfixtureperformanceshallbetested.4.2.2 Adjustablesealing(compression)4.2.2.1 DescriptionMadefro
36、mrelativelysoft,pliantmaterials,compressionormechanicalpackingsconsistofanumberofrings,whichareinsertedintotheannularspace(stuffingbox)betweentherotatingorreciprocatingstemandthebodyorbonnetofavalve.Bytighteningafollowerorpackingglandagainstthetoporendring,pressureistransmittedtothepackingset.Thisex
37、pandstheringsradiallyagainstthesideofthestuffingboxandthereciprocatingorrotatingstemcreatinganeffectiveseal.Adjustablecompressionpackingsealingdesignscanincludeliveloadedtypeswherethefollowerwillcontinuetoloadthepackinginordertocompensateforpackingcompressionlossbythermalcycling,friction,extrusion,c
38、reep,relaxation,consolidationetc.asthevalveoperates.Theseliveloadedcompressionsealdesignsapplytheloadtothepackingbyusingastoredenergydevicesuchasaspring.Compressionpackingsealsorglandsealsareusedtosealavarietyoffluidsunderarangeofconditions.Theyareusedtohelpcontainwater,acidslsolvents,gasesloilandot
39、herchemicalsthataresubjectedtovarioustemperaturesandpressures.4.2.2.2 SpecificationandmaterialsThemostcommontypeofcompressionpackingisbraidedcompressionpacking.Thistypeofpackingistypicallyinstalledbycuttingringsoftherequiredsizefromropepacking,orusingpre-formedrings,insertingthemintoastuffingboxandt
40、ighteningthemtoachievetherightdensity.However,alternativeinstallationprocessesmayalsobeused.Dependingontheservice,constructionmaterialscanbeasdiverseasplantsoranimalderivatives,mineralfibresorsyntheticplastics,andevenmetal.Typicalmaterialsforcompressiblepackinginclude,butarenotlimitedto一PTFE(polytet
41、rafluoroethylene)graphitePTFE一aramide/PTFE一aramide一braidedorpre-formedgraphiteAcombinationofdifferentpackingmaterialsisallowed.Whenthestemsealingmaterialormaterialmanufacturerischanged,manufacturinglocation,orthereisachangeinthemethodofmanufactureofthesealingorstemsealassembly,anentirelynewtypetesti
42、srequired.AnexampletestfixtureisgiveninAnneXA.4.2.3 Non-adjustablesealingstacks:springandpressureenergizedseals4.2.3.1 DescriptionNon-adjustablespringandpressureenergizedsealstacksareusedtosealavarietyoffluidsunderarangeofconditions.Theyareusedtohelpcontainwater,acids,solvents,gases,oilandotherchemi
43、calsthataresubjectedtovarioustemperaturesandpressures.Theyareoftenusedinemissioncriticalorhigh-pressurestemsealing,particularlywhenconsistentsealingperformance,overlargenumbersofoperatingcyclesandwithoutroutinemaintenanceadjustments,isrequired.Non-adjustablespringandpressureenergizedsealingstacksare
44、designedtofunctionasacompletepressureenergizedsealassembly.Thespring-loadedsealingelementsensureeffectivelow-pressuresealingperformancewhilstallelementscombinetoprovidehigherpressuresealingcapabilitybyutilisingtheinternalfluidpressureactingonthestacktogeneratethenecessarysealingloads.Pressureenergiz
45、edsealsofthistypedonotrequireadjustmentinserviceasthepressuregeneratedsealingloadactingonthestackcompensatesfortheeffectsofsealwearduringthelifetimeoftheseal.Onceinstalledintheassembly,springorpressureenergisedsealsrequirenofurtheradjustmenttooperate.4.2.3.2 SpecificationandmaterialsTherearemanydiff
46、erentdesignsofsealstacksintendedforawidevarietyofapplications.Thevariousseparateelementsofthesealstackcanhavedifferentsurfaceprofilesandcrosssectionsintendedtoensureeffectivesealingperformancewithoutexcessivedeformation,extrusionorcreepovertheratedpressureandtemperaturerange.Severaldifferentmaterial
47、scanbeusedwithinasinglesealstack,e.g.acombinationoffilledandunfilledpolymersandelastomers.Theperformanceofthesealstackissensitivetothesurfacefinish,geometryandgeometrictolerancesofthesealhousingcomponentsaswellasthestem.Usersshallthereforefollowthesealmanufacturersspecifiedgeometry,surfaceroughnessr
48、equirementsandinstallationinstructions.Examplesoftypicalmaterialsfornon-adjustablesealinginclude,butarenotlimitedto:PTFE一PTFEcarbonglass/aramidemixes一FKM(fluororubberhavingsubstituentfluoro,perfluoroalkyborperfluoroalkoxygroupsonthepolymerchain)一NBR(acrylonitrile-butadienerubber)一HNBR(hydrogenatednitrile-butadienerubber)一XNBR(carboxylic-acrylonitrile-butadienerubber)一FEP(fluorinatedethylenepropylene)一FVMQ(fluorosilicone
