1、BRITISH STANDARD BS EN 1514-6:2003 Flanges and their joints Dimensions of gaskets for PN-designated flanges Part 6: Covered serrated metal gaskets for use with steel flanges The European Standard EN 1514-6:2003 has the status of a British Standard ICS 23.040.80 BS EN 1514-6:2003 This British Standar
2、d, was published under the authority of the Standards Policy and Strategy Committee on 22 December 2003 BSI 22 December 2003 ISBN 0 580 43134 7 National foreword This British Standard is the official English language version of EN 1514-6:2003. The UK participation in its preparation was entrusted to
3、 Technical Committee PSE/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
4、in this document may be found 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
5、 a contract. Users are responsible 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 prop
6、osals for change, and keep 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 13 and a back cover. The BSI copyright notice disp
7、layed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN15146 December2003 ICS23.040.80 Englishversion FlangesandtheirjointsDimensionsofgasketsforPN designatedflangesPart6:Coveredse
8、rratedmetalgasketsfor usewithsteelflanges BridesetleursassemblagesDimensionsdesjointspour lesbridesdsignesPNPartie6:Jointsmtalliquesstris revtuspourutilisationavecdesbridesenacier FlanscheundihreVerbindungenMaefrDichtungenfr FlanschemitPNBezeichnungTeil6: KammprofildichtungenfrStahlflansche ThisEuro
9、peanStandardwasapprovedbyCENon3November2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtain
10、edonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CEN
11、membersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION E
12、UROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN15146:2003EEN15146:2003(E) 2 Contents page Foreword3 1 Scope 4 2 Normativereferences 4 3 Termsanddefinitions. .4 4 Designat
13、ions.5 4.1 RangeofPNdesignations 5 4.2 RangeofDN(nominalsizes) . .5 4.3 Gaskettypes .5 4.4 Informationtobesuppliedbythepurchaser. .5 5 Constructionaldetails .5 5.1 Generaldetails . 5 5.2 Core .6 5.2.1 Corematerials 6 5.2.2 Corewelding .6 5.2.3 Dressingofcorewelds 6 5.2.4 Coreflatness . .6 5.3 Serrat
14、ions .6 5.4 Locationrings 6 5.4.1 Integralring . .6 5.4.2 Loosering .6 5.5 Facingmaterials .6 5.6 Facingweightperunitarea . .7 5.7 Attachmentoffacing .7 5.7.1 Methodsofattachment. .7 5.7.2 Degreasingofcore . 7 5.7.3 Numberofjoins. .7 5.7.4 Excessivefacing 7 5.8 Integrityoffacingattachment .7 5.9 Typ
15、icalconstructiondetails .8 6 Dimensions.10 7 Marking .11 8 Colourcoding. 11 9 Packaging .11 AnnexA (informative) Informationtobesuppliedbythepurchaser.13EN15146:2003(E) 3 Foreword Thisdocument(EN15146:2003)hasbeenpreparedbyTechnicalCommitteeCEN/TC74“Flangesandtheir joints“,thesecretariatofwhichishel
16、dbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyJune2004,andconflictingnationalstandardsshallbewithdrawnatthelatestby June2004. TheannexAisinformativeandcontains“Informationtobesuppliedbythepurchaser“. EN1514consi
17、stsof6parts: Part1: Nonmetallicflatgasketswithorwithoutinserts Part2: Spiralwoundgasketsforusewithsteelflanges Part3: NonmetallicPTFEenvelopegaskets Part4: Corrugated,flatorgroovedmetallicandfilledmetallicgasketsforusewithsteelflanges Part6: Coveredserratedmetalgasketsforusewithsteelflanges Part7: C
18、overedmetaljacketedgasketsforusewithsteelflanges Part8: PolymericORinggasketsforgroovedflanges AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,G
19、reece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN15146:2003(E) 4 1Scope ThisEuropeanStandardspecifiestheconstruction,dimensionsandmarkingofcoveredserratedmetalgasketsfor use with flanges complying with EN10921 fo
20、r PN10, PN16, PN25, PN40, PN63 and PN100 up to and includingDN3000. Thisdocumentdoesnotextendtocoveredserratedmetalbasedheatexchangergasketswithpassbarsorlarge vesselgasketsbut,inthelackofadedicateddocumentforsuchgaskets,theprinciplessetdowncanbeappliedto them. NOTE1 Dimensionsofothertypesofgasketsf
21、orusewithflangestoEN10921,EN10922,EN10923andEN10924are giveninEN15141,EN15142,EN 15143,EN15144,prEN15147andprEN15148. NOTE2 AnnexAlistsinformationthatshouldbesuppliedbythepurchaserwhenorderinggasketsincircumstanceswhere thechoiceofthegasketmaterialsappropriatetotheserviceislefttothesupplier. 2 Norma
22、tivereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEurop
23、ean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN10921, FlangesandtheirjointsCircularflangesforpipes,valves,fittingsandaccessories,PNdesignated Part1:Steelflanges. EN10922, FlangesandtheirjointsCi
24、rcularflangesforpipes,valves,fittingsandaccessories,PNdesignated Part2:Castironflanges. EN10923:2003, FlangesandtheirjointsCircularflangesforpipes,valves,fittingsandaccessories, PNdesignatedPart3:Copperalloyflanges. EN10924, FlangesandtheirjointsCircularflangesforpipes,valves,fittingsandaccessories,
25、PNdesignated Part4:Aluminiumalloyflanges. EN1333, PipeworkcomponentsDefinitionandselectionofPN. ENISO6708:1995, PipeworkcomponentsDefinitionandselectionofDN(nominalsize)(ISO6708:1995). 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thetermsanddefinitionsgiveninEN 10923:2003, ENISO6708:19
26、95andthefollowingapply. 3.1 coveredserratedmetalgasket consistsofasealingelementwithorwithoutalocationringwhichmayormaynotberigidlyfixedtothesealing element.Thesealingelementconsistsofametalcorewithserratedtopandlowersurfacesandaconformable sealingmaterialadheredtoeachserratedsurface.Theserrationsin
27、tometalcorehavethefunctionofcreating regionsofhighsurfacepressureontheconformablesealingmaterialtoensuretherequiredleveloftightnessin service.Thedensityofthesealingmaterialintheserrationsduringserviceshouldalsobehighenoughtoensure thatsecondarysealingisprovidedbytheimpermeablenatureofthematerialbetw
28、eenthetipsoftheserrations.In servicethethicknessofthesealingmaterialovertheserrationsisminimal,oftenabout0,1mm.Thewidthsofthe tipsoftheserrationsshouldalsobeoftheorderof0,1mmEN15146:2003(E) 5 3.2 DN seeENISO6708 3.3 PN seeEN1333 4Designations 4.1 RangeofPNdesignations Gasketsshallbedesignatedassuita
29、bleforusewithoneormoreofthefollowingPNdesignationsofflange: PN10 PN40 PN250 PN16 PN63 PN320 PN25 PN100 PN400 NOTE TherearenostandardsintheEN1092seriesthatcoverPN160,PN250,PN320orPN400flangesbutthereare nationalstandardscoveringthese. 4.2 RangeofDN(nominalsizes) Gasketnominalsizesshallbedesignatedina
30、ccordancewiththerangesspecifiedinTable1. Thegeneralprinciplesdescribedinthisstandardshallalsobeappliedtogasketsoutsideoftherangespecifiedin Table1byagreementbetweensupplierandcustomer . 4.3Gasket types Gaskettypes,asillustratedinFigure1,shallbedesignatedas : TypeNR: Sealingelementwithoutanylocationr
31、ing TypeIR: Sealingelementwithintegrallocationring. TypeLR: Sealingelementwithlooselocationring. TypesNRisusedonlywithspigotfacedortongueandgroovefacedflanges 4.4 Informationtobesuppliedbythepurchaser Theselectionofgasketmaterialsandtypeshouldtakeintoaccountthefluid,theoperatingconditionsandthe prop
32、ertiesofthegasketmaterialsaswellasthetypeofflange.Itisrecommendedthatselectionofagasketforany particularapplicationismadeinconsultationwiththegasketsupplierwhowilladviseonthematerialsrequiredfora particularservice(seeannexA). 5 Constructionaldetails 5.1 Generaldetails Figure1givesillustrationsofthec
33、oresand,whereused,thelocationringsofthethreetypesofcoveredserrated metalgasketlistedin4.3.EN15146:2003(E) 6 Figure2showsatypicalcoveredserratedmetalgasketforusewithtypeAandtypeBflanges,theTypeAandB flangefacingsarespecifiedinEN10921,EN10922,EN10923andEN10924. 5.2Core 5.2.1 Corematerials Thematerialo
34、fthecoreshallbeselectedtobecompatiblewiththeintendedservice.Thecorethickness, measuredoverthetipsoftheserrations,shallbeaminimumofthreetimesthedepthoftheserrations. 5.2.2 Corewelding Ifthecoreisofaweldedconstructionthenthemethodofweldingshallbesuchastoensurethattheweldis throughoutthefullthicknessof
35、thecore.Thenumberofweldsshallnotbemorethantwo. 5.2.3 Dressingofcorewelds Theweldsshallbedressedtopreservethenumberanddepthoftheserrationsoftherestofthecore. 5.2.4 Coreflatness Theoutofflatnessoftheserratedcoreshallnotbemorethan3mmforevery300mmofoutsidediameter. 5.3Serrations Theserrationdepthshallbe
36、aminimumof0,4mm.Thepitchoftheserrationandthewidthoftheserrationshallbe arrangedsothatthewidthofthetipsis0,1mm.Thefirstandlasttipsoftheserratedcoreshallbeasnearas possibletotherespectiveedgesofthecore. Proprietaryformsofserrationsandcoreprofilesmaybeusedbyagreementbetweenthepurchaserand manufacturer.
37、 Tominimisethepossibilityofvibrationinducedcrackingofthecore,theradiusatthebottomofthegroovesshallbe aslargeaspossible. 5.4 Locationrings 5.4.1 Integralring Thethicknessoftheintegralringshallbeaminimumof0,5mm.Thelocationringshallbeundercutonatleastone sidetoprotectthesealingelementintheeventoftherma
38、lexpansioninducedinterferencebetweenthelocationring andtheboltsoftheflange. 5.4.2Loose ring Thethicknessofthelocationringshallbeaminimumof0,5mm.Wheninstalledtheringshallbesufficientlyloose inthelocationslotinthecoresothatthermalexpansioneffectsnevercausetheringtobecometightinthelocation slot.Theloca
39、tionringmaybemadeinsectionsandassembledaroundthecore.Thesectionsoftheassembled ringshallbeeitherweldedtogetherorotherwisesecurelyheldtogether.Thematerialofthelooselocationringmay becarbonsteel. 5.5Facing materials Thefacingmaterialshallbeselectedtobesuitablefortheintendedserviceandthematerialofthefl
40、anges. Suitablematerialsrangefromverysoft,rubberbound,sheetmaterialtometalfoils. Thefacingmaterialmaybecutfromsheettotheappropriatesize,appliedintheformoftexturisedtapeorbyany othermeansthatmeetstheotherrequirementsofthisstandard.EN15146:2003(E) 7 5.6 Facingweightperunitarea Theweightperunitareaoffa
41、cinginordertocreatetherequiredleveloftightnessinserviceisafunctionofthe thicknessanddensityofthefacingmaterial,thedepth,widthandpitchoftheserrations,therequiredinservice densityofthefacingmaterialandthethicknessoffacingrequiredabovethecoreinservice.Theweightperunit areashallbesuchthatmetaltometalcon
42、tactbetweenthetipsoftheserrationsandtheflangesurfaceisavoided. Forguidance,asatisfactorylevelofsealingisroutinelyachievedwithgraphiteof0,5mmthicknessandadensityof 1,0gm/cm 3 asreceivedwhenusedwithacorewheretheserrationsare0,4mmindepthandtheserrationtipwidth is0,1mm. Ignoringtheeffectsofthethicknesso
43、fanyadhesiveandthegroovingoftheflangesurfaces,thetargetweightper unitareaoffacingcanbeestimatedfromthefollowing: Weightperunitarea= r s t+(A G /P) Where r s istherequireddensityofthefacinginservice t istherequiredthicknessinserviceoffacingabovethecore A G isthecrosssectionalarea,perpendiculartotheplaneofthecore,oftheserrations P isthepitchoftheserrations 5.7 Attachmentoffacing
