300lb Free Leakage API 6D Casting Trunnion Ball Valve For Chemical , DN50-DN1200 - Product

Other Specification :  300lb FreeLeakageAPI6DCastingTrunnionBallValveForChemical, DN50-DN1200 QuickDetail: Size&Pressure:150#DN50-DN1200 300#DN50-DN1200 600lbDN50-DN1200 900#DN50-DN900 1500#DN50-DN600 Description: CASTTRUNNIONBALLVALVE 1.Blow-outproofstem Forthepurposeofpreventingthestemfromflyingoffresultinginabnormalrisingoftheinner Pressureofvalve,shoulderisfixedatthelowerpartofthestem.Inaddition,inordertoprevent Leakageresultingfromburnoutofpackingsetofthesteminafire,thrustbearingissetatthe Contactpositionoftheshoulderatlowerpartofthestemandvalvebody.Thusaninverseseal Seatisformedwhichwillpreventleakageandavoidaccident. 2.Keylock Lockscanbeusedtolockthemanualvalvewhenitisfullyopenorclosedsoastoprevent Non-workingpersonnelfrompullingthehandlewhichmayresultinmisoperationofvalve.Itcan Alsoavoidopeningorclosingofvalveresultingfromtheshockfrompipelinesorunpredictable Factorsthatmaycauseanaccident.Forworkingpipelinessuchascombustibleandexplosiveoil, Gasandchemicalmedium,orforfieldpipingsite,thelockingmechanismisespeciallyuseful. 3.Anti-firesafedesign Whenthetrunnionballvalvebeusednormally,itssealedbyseatandballsurface,seatretainer SealedbyO-ringandbody,thisissoftsealedandreliablesealing.WhentheseatandO-ringare Burnt,theseatretainerandbodywillbesealedbyexpandedgraphite.Thusactanti-firesafepurpose. 4.Anti-staticdevice Inordertopreventfrictionamongball,stemandPTFEthatgeneratesstaticelectricitywhichmay Lightthecombustiblesandexplosivesthatcauseanaccident,inthisballvalve,static-conductionspring Issetbetweenthestemandtheball,thestemandthebody.Thusstaticelectricityisconductedto Groundandsystemsafetyissecured. 5.FreeleakageofbodySealedconstruction TheconnectivepositionofvalvebodyandbonnetisdoublesealedbygasketandO-ring,onthis Base,suchfactorsasfire,hightemp

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