1、BRITISH STANDARD BS EN 1514-7:2004 Flanges and their joints Gaskets for PN-designated flanges Part 7: Covered metal jacketed gaskets for use with steel flanges The European Standard EN 1514-7:2004 has the status of a British Standard ICS 23.040.80 BS EN 1514-7:2004 This British Standard was publishe
2、d under the authority of the Standards Policy and Strategy Committee on 26 May 2004 BSI 26 May 2004 ISBN 0 580 43820 1 National foreword This British Standard is the official English language version of EN 1514-7:2004. The UK participation in its preparation was entrusted to Technical Committee PSE/
3、2, Jointing materials and compounds, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be f
4、ound in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are re
5、sponsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and kee
6、p the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 18, an inside back cover and a back cover. The BSI copyright notice display
7、ed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN15147 May2004 ICS23.040.80 Englishversion FlangesandtheirjointsGasketsforPNdesignatedflanges Part7:Coveredmetaljacketedgasketsfo
8、rusewithsteel flanges BridesetleursassemblagesJointspourlesbrides dsignesPNPartie7:Jointsmtalloplastiquesrevtus pourutilisationavecdesbridesenacier FlanscheundihreVerbindungenDichtungenfrFlansche mitPNBezeichnungTeil7:MetallummantelteDichtungen mitAuflagefrStahlflansche ThisEuropeanStandardwasapprov
9、edbyCENon17March2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCen
10、tralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenation
11、alstandardsbodiesofAustria,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. EUROPEANCOMMITTEEFORSTANDARDIZATION
12、COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN15147:2004:EEN15147:2004(E) 2 Contents page Foreword. 3 1 Scope . 4 2 Normativereferences . 4
13、3 Termsanddefinitions. 4 4 Designations 4 4.1 RangeofPNdesignations . 4 4.2 RangeofDN(nominalsizes) . 5 4.3 Gaskettypes 5 4.4 Informationtobesuppliedbythepurchaser. 5 5 Constructionaldetails 5 5.1 Generaldetails . . 5 5.2 Metaljacket 7 5.2.1 Metaljacketdescription . 7 5.2.2 Metaljacketmaterial. 7 5.
14、3 Softfiller. 7 5.3.1 Softfillerdescription . . 7 5.3.2 Softfillermaterial 7 5.4 Coveringlayers . 8 5.4.1 Coveringlayersdescription. 8 5.4.2 Coveringlayersmaterial 8 5.5 Innerandouterrings . . 8 5.5.1 Innerandouterringsdescription. . 8 5.5.2 Innerandouterringsmaterial . 9 5.6 Attachmentoffacing 9 5.
15、6.1 Methodsofattachment. 9 5.6.2 Degreasingofcore . . 9 5.6.3 Numberofjoins. 9 5.6.4 Excessivefacing . 9 5.7 Integrityoffacingattachment 9 5.8 Constructioncharacteristicsdetails . 9 6 Dimensions 10 7 Marking 13 8 Colourcoding. . 13 9 Packaging 13 AnnexA (informative) Informationtobesuppliedbythepurc
16、haser. 15 AnnexB (informative) Adeviation. 16 Bibliography . 18EN15147:2004(E) 3 Foreword Thisdocument(EN15147:2004)hasbeenpreparedbyTechnicalCommitteeCEN/TC74“Flangesandtheir joints“,thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationof
17、anidentical textorbyendorsement,atthelatestbyNovember2004,andconflictingnationalstandardsshallbewithdrawn atthelatestbyNovember2004. TheannexAisinformativeandcontains“Informationtobesuppliedbythepurchaser“. TheannexBisinformativeandcontains“Adeviations“. EN1514consistsof7parts: Part1: Nonmetallicfla
18、tgasketswithorwithoutinserts Part2: Spiralwoundgasketsforusewithsteelflanges Part3: NonmetallicPTFEenvelopegaskets Part4: Corrugated,flatorgroovedmetallicandfilledmetallicgasketsforusewithsteelflanges Part6: Coveredserratedmetalgasketsforusewithsteelflanges Part7: Coveredmetaljacketedgasketsforusewi
19、thsteelflanges Part8: PolymericOringgasketsforgroovedflanges AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Cyprus,CzechRepublic,Den mark,Estonia,Finland,France,Germany,Greece,Hungary,Icela
20、nd,Ireland,Italy,Latvia,Lithuania,Luxem bourg,Malta,Netherlands,Norway,Poland,Portugal,Slovakia,Slovenia,Spain,Sweden,Switzerlandand UnitedKingdom.EN15147:2004(E) 4 1Scope ThisEuropeanStandardspecifiestheconstruction,dimensionsandmarkingofcoveredmetaljacketedgas ketsforusewithflangescomplyingwithEN1
21、0921forPN2,5,PN6,PN10,PN16,PN25,PN40,PN63 andPN100uptoandincludingDN900. ThisEuropeanStandarddoesnotextendtocoveredmetaljacketedbasedheatexchangergasketswithpass barsorlargevesselgasketsbut,inthelackofadedicateddocumentforsuchgaskets,theprinciplessetdown maybeappliedtothem. NOTE1 Dimensionsofotherty
22、pesofgasketsforusewithflangestoEN10921,EN10922,EN10923andEN1092 4aregiveninEN15141,EN15142,EN15143,EN15144,EN15146andprEN15148. NOTE2 AnnexAlistsinformationthatshouldbesuppliedbythepurchaserwhenorderinggasketsincircumstances wherethechoiceofthegasketmaterialsappropriatetotheserviceislefttothesupplie
23、r. 2 Normativereferences Notapplicable. 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thefollowingtermsanddefinitionsapply. 3.1 coveredmetaljacketedgasket consistsofasealingelementwithorwithoutalocationringwhichmaynotberigidlyfixedtothesealingele ment NOTE Thesealingelementconsistsofame
24、taljacketedcoreandaconformablesealingmaterialadheredtobothtop andlowermetaljacketedcoresurfaces. 3.2 DN seeENISO6708 3.3 PN seeEN1333 4Designations 4.1 RangeofPNdesignations GasketsshallbedesignatedassuitableforusewithoneormoreofthefollowingPNdesignationsofflange: PN2,5 PN16 PN63 PN6 PN25 PN100 PN10
25、 PN40EN15147:2004(E) 5 4.2 RangeofDN(nominalsizes) GasketnominalsizesshallbedesignatedinaccordancewiththerangesspecifiedinTables2and3. Thegeneralprinciplesdescribedinthisstandardshallbeappliedtogasketsoutsideoftherangespecifiedin Tables2and3byagreementbetweensupplierandcustomer . 4.3Gasket types Gas
26、kettypes,asillustratedinFigure1,shallbedesignatedas: TypeSC: Sealingelementselfcentring(usedwithtypeC/DorE/Fflangefacings); TypeC/I: Sealingelementwithinnerring(usedwithtypeC/DorE/Fflangefacings); TypeC/O: Sealingelementwithcentringring(usedwithtypeAorBflangefacings); TypeC/IO: Sealingelementwithcen
27、tringringandinnerring(usedwithtypeAorBflangefacings). ThetypeA,typeB,typeC/D,typeE/FflangefacingsarespecifiedinEN10921. 4.4 Informationtobesuppliedbythepurchaser Theselectionofgasketmaterialsandtypeshouldtakeintoaccountthefluid,theoperatingconditionsandthe propertiesofthegasketmaterialsaswellasthety
28、peofflange.Itisrecommendedthattheselectionofagas ketforanyparticularapplicationismadeinconsultationwiththegasketsupplierwhowilladviseonthemate rialsrequiredforaparticularservice(seeannexA). 5 Constructionaldetails 5.1 Generaldetails Thecoveredmetaljacketedgasketshallconsistofametaljacketedcoreandofc
29、overinglayersstuckonboth sides. Allgasketsizesandclassesshallbedesignedsothatanapplieduniformboltstressof200MPawillcorrectly seatthegasketandoffertherequiredlevelofseal. GasketsforwhichdimensionsarespecifiedshallbeoneofthedesignsshowninFigure1.EN15147:2004(E) 6 a) TypeSC b) TypeC/I c) TypeC/O d) Typ
30、eC/IO Figure1Coveredmetaljacketedgaskets a) gaskets(C/OorC/IOtype)forusewithtypeA(flatface)ortypeB(raisedface)flanges b) gaskets(SCorC/Itype)forusewithtypeC/D(tongue/groove)ortypeE/F(spigot/recess)flanges Key 1 Centringring 2 Sealingelement 3 Innerring Figure2Examplesoftypicalcoveredmetaljacketedgas
31、ketsconfigurationsEN15147:2004(E) 7 5.2Metal jacket 5.2.1 Metaljacketdescription ThetoleranceoftheinsideandtheoutsidediametersofmetaljacketcrosssectionaregiveninTables2and 3. Thicknessofthemetaljacketcrosssectionisdependingonthesoftfillermaterial. 5.2.2 Metaljacketmaterial Thematerialoftheshellofthe
32、metaljacketshallbeselectedtobecompatiblewiththeintendedservice. Table4liststhemostfrequentlyusedmaterials. Theshellofthemetaljacketshallhaveathicknessbetween0,3mmand0,5mm. 5.3Soft filler 5.3.1 Softfillerdescription Thethicknessofthesoftfillermaterialshallbeselectedtoensure: agoodcompressibilityandel
33、asticrecoveryofthegasketinordertocompensateasmuchaspossiblethe flatnessdefaultsandtorespondtovariationsduetooperatingconditions; afinalthickness(withcoveringlayers)adaptedwiththelengthofthepipingline(aftertightening); compatibilitywiththeassemblyspecification(spigotandrecessortongueandgroove,metalto
34、metal contact,.). 5.3.2 Softfillermaterial Thefillermaterialshallbeselectedinaccordancewiththeintendedservicebutasguidance,satisfactoryme chanicalbehaviourisusuallyobtainedwiththefollowingsoftfillermaterials: Suitableexpandedgraphiteis: 98 %purity,ashcontentmax.2 %,sulphurcontentmax.1 000 10 6 (ppm)
35、,halogencontents max.50 10 6 (ppm); initialdensityshallbe1,0g/cm 3 to1,1g/cm 3 . SuitableexpandedPTFEis: notrecycled100%expandedPTFE; initialdensityshallbe0,7g/cm 3 to0,9g/cm 3 . SuitableFlexibleMicais: PhlogopiteMica(content96%)withSiliconbinder; initialdensityshallbe1,8g/cm 3 to1,9g/cm 3 .EN15147:
36、2004(E) 8 5.4 Coveringlayers 5.4.1 Coveringlayersdescription Thecoveringlayersmaterialandthicknessshouldbeselectedtobecompatible: withtheprocessfluid,andtheoperatingconditions; typeandsurfacefinishoftheflangefacings; flange bolt loading; andtoguarantee: satisfactorylevelofseal; agoodadaptationwithfl
37、angefacingsdefaults. 5.4.2 Coveringlayersmaterial Asaguidance,satisfactoryleaktightnessisusuallyreachedwiththefollowingcoveringmaterials: Suitableexpandedgraphiteis: 98 %purity,ashcontentmax.2 %,sulphurcontentmax.1 000 10 6 (ppm),halogencontents max.50 10 6 (ppm); initialdensityshallbe1,0g/cm 3 to1,
38、1g/cm 3 ; tobefinishedwithanantistickingcoating. SuitableVirginPTFEis: notrecycled100%PTFE; initialdensityshallbe1,6g/cm 3 . SuitableExpandedVermiculiteis: initialdensityshallbe1,2g/cm 3 . NOTE Itwouldbepreferablethatthegasketdoesnotshowanyadhesiontotheflangefacings. 5.5 Innerandouterrings 5.5.1 Inn
39、erandouterringsdescription Theringthicknessdependonthesealingelementthickness. Theringsmaterialandthicknessshouldbeselectedtobecompatible: withtheassemblyconsidered(spigotandrecessortongueandgroove,metaltometalcontact,.); withtheprocessfluid,andtheoperatingconditions;EN15147:2004(E) 9 andtoguarantee
40、: protectionofthesealingelementagainstoverload; sufficientloadtoassuregoodlevelofseal. Thetolerancesoftheinsideandoutsidediametersoftheinnerand/orouterringsaregiveninTables2 and3. 5.5.2 Innerandouterringsmaterial Fortheouterring,carbonsteelmaybeselectedasstandard. Fortheinnerring,thesamematerialoron
41、ewithbettercorrosionresistancethanthatofthemetaljacketshall beselectedasstandard. 5.6 Attachmentoffacing 5.6.1 Methodsofattachment Anappropriatebondingadhesiveshallbeused(maximumchlorinelevelsofbelow50ppm). 5.6.2 Degreasingofcore Whereanadhesiveisusedthecoreshallbedegreasedbeforeuseoftheadhesiveandt
42、heamountofthe adhesiveusedshallbeminimised. 5.6.3 Numberofjoins Incaseofjoinsinthefacingmaterial,theirnumbershallbeminimised. 5.6.4Excessive facing Oncethesealingfaceshavebeenappliedanyexcessmaterialshallberemovedpayingparticularattention thatnoneprotrudesinsideoftheinnerdiameterofthegasket. 5.7 Int
43、egrityoffacingattachment Inordertoensureadequatefixationofthecoverlayertothemetaljacketed,itshallbeensuredthatthemate rialisfreefromanydefectssuchasincisions,cracksorfractures. 5.8 Constructioncharacteristicsdetails Asaguidance,satisfactoryconfigurationofcoveredmetaljacketedgasketsisobtainedasdescribedin Table1.EN15147:2004(E) 10 Table1Constructioncharactericdetails Generalpetrochemical
