MSSSP-117-2006www.mss-hq.orgStandardPracticeDevelopedandApprovedbytheManufacturersStandardizationSocietyoftheValveandFittingsIndustry,Inc.127ParkStreet,NEVienna,Virginia22180Phone:(703)281-6613Fax:(703)281-6671e-mail:info@mss.hq.orgBellowsSealsforGlobeandGateValvesMSSCopyrightMSSProvidedbyIHSunderlicensewithMSSNotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,```,,,,````-`-`,,`,,`,`,,`---MSSSTANDARDPRACTICESP-117iThisMSSStandardPracticewasdevelopedundertheconsensusoftheMSSTechnicalCommittee114andtheMSSCoordinatingCommittee.ThecontentofthisStandardPracticeistheresultoftheeffortsofcompetentandconcernedvolunteerstoprovideaneffective,clear,andnon-exclusivespecificationthatwillbenefittheindustryasawhole.ThisMSSStandardPracticeisintendedasabasisforcommonpracticebythemanufacturer,theuser,andthegeneralpublic.TheexistenceofanMSSStandardPracticedoesnotinitselfprecludethemanufac-ture,sale,oruseofproductsnotconformingtotheStandardPractice.Mandatoryconformanceisestablishedonlybyreferenceinacode,specification,salescontract,orpubliclaw,asapplicable.UnlessotherwisespecificallynotedinthisMSSSP,anystandardreferredtohereinisidentifiedbythedateofissuethatwasapplicabletothereferencedstandard(s)atthedateofissueofthisMSSSP.(SeeAnnexB.)InthisStandardPracticeallnotes,annexes,tables,andfiguresareconstruedtobeessentialtotheunderstandingofthemessageofthestandard,andareconsideredpartofthetextunlessnotedas"supplemental".Allappendi-cesappearinginthisdocumentareconstruedas"supplemental".Supplemental"informationdoesnotincludemandatoryrequirements.Substantivechangesinthis2006editionare“flagged”byparallelbarsasshownonthemarginsofthisparagraph.Thespecificdetailofthechangemaybedeterminedbycomparingthematerialflaggedwiththatinthepreviousedition.Anypartofthisstandardmaybequoted.Creditlinesshouldread`extractedfromMSSSP-117,2006withpermissionofthepublisher,theManufacturersStandardizationSociety.'ReproductionprohibitedundercopyrightconventionunlesswrittenpermissionisgrantedbytheM...