MSS SP-136-2007 Ductile Iron Swing Check Valves

MSSSP-136-2007StandardPracticeDevelopedandApprovedbytheManufacturersStandardizationSocietyoftheValveandFittingsIndustry,Inc.127ParkStreet,NEVienna,Virginia22180Phone:[phone]Fax:[phone]E-mail:[e-mail]`,,```,,,,````-`-`,,`,,`,`,,`---MSSSTANDARDPRACTICESP-136iThisMSSStandardPracticewasdevelopedundertheconsensusoftheMSSTechnicalCommittee106andtheMSSCoordinatingCommittee.ThecontentofthisStandardPracticeistheresultoftheeffortsofcompetentandconcernedvolunteerstoprovideaneffective,clear,andnon-exclusivespecificationthatwillbenefittheindustryasawhole.ThisMSSStandardPracticeisintendedasabasisforcommonpracticebythemanufacturer,theuser,andthegeneralpublic.TheexistenceofanMSSStandardPracticedoesnotinitselfprecludethemanufacture,sale,oruseofproductsnotconformingtotheStandardPractice.Mandatoryconformanceisestablishedonlybyreferenceinacode,specification,salescontract,orpubliclaw,asapplicable.UnlessotherwisespecificallynotedinthisMSSSP,anystandardreferredtohereinisidentifiedbythedateofissuethatwasapplicabletothereferencedstandard(s)atthedateofissueofthisMSSSP(SeeAnnexC).Non-toleranceddimensionsinthisStandardPracticearenominal,and,unlessotherwisespecified,shallbeconsidered“forreferenceonly”.InthisStandardPracticeallnotes,annexes,tables,andfiguresareconstruedtobeessentialtotheunderstandingofthemessageofthestandard,andareconsideredpartofthetextunlessnotedassupplemental.Allappendicesappearinginthisdocumentareconstruedassupplemental.Supplementalinformationdoesnotincludemandatoryrequirements.Anypartofthisstandardmaybequoted.Creditlinesshouldread‘ExtractedfromMSSSP-136,2007withpermissionofthepublisher,theManufacturersStandardizationSociety.'ReproductionprohibitedundercopyrightconventionunlesswrittenpermissionisgrantedbytheManufacturersStandardizationSocietyoftheValveandFittingsIndustryInc.OriginallyApprovedFebruary,2007Copyright©,2007byManufacturersStandardizationSocietyoftheValveandFittingsIndustry,Inc.PrintedinU.S.A.CopyrightMSSProvidedbyIHSunderlicensewithMSSNotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,```,,,,````-`-`,,`,,`,`,,`---MSSSTANDARDPRACTICESP-136iiTABLEOFCONTENTSSECTIONPAGE1SCOPE.................................................................................................................................................12VALVEDESIGNATION,CLASSESANDSIZES............................................................................13PRESSURE-TEMPERATURERATINGS.........................................................................................24MATERIALS.......................................................................................................................................25DESIGN...............................................................................................................................................36WORKMANSHIP...............................................................................................................................57PRESSURETESTING........................................................................................................................58MARKING..........................................................................................................................................69PAINTING...........................................................................................................................................6TABLE1Pressure-TemperatureRatings,ASTMA395,Non-Shock–psi.......................................................22Pressure-TemperatureRatings,ASTMA536Non-Shock–psi........................................................33ShellTestPressure...............................................................................................................................64MinimumDurationofTests.................................................................................................................6B1Pressure-TemperatureRatings,ASTMA395,Non-Shock–bar........................................................8B2Pressure-TemperatureRatings,ASTMA536,Non-Shock–bar........................................................8FIGUREA1Full-WaterwayMetaltoMetalSeat,TypeI........................................................................................7A2Full-WaterwayCompositiontoMetalSeat,TypeII............................................................................7A3Clear-WaterwayMetaltoMetalSeat,TypeIII...................................................................................7A4Clear-WaterwayCompositiontoMetalSeat,TypeIV........................................................................7ANNEXAValveTypes–FiguresA1throughA4.............................................................................................7BMetricUnits.............................................................................................