Carbon Steel Forged Steel Ball Valve / full welding Ball Valve DN100-DN1200 extented stem - Product

Other Specification :  CarbonSteelForgedSteelBallValve/Full WeldedBallValveDN100-DN1200,extented Stem,BW Add Pipe,Extented Stem Ball Valve Service Underground Pipeline QuickDetail: Size&Pressure: 150#DN100-DN1200 300#DN100-DN1200 600#DN100-DN1200 900#DN100-DN900 1500#DN100-DN500 2500#DN100-DN300 Bore: FULL BORE,REDUCE BORE End: RF,RTJ,BW, Body Material: Forged A105N,LF2,F6A,F304,F316,F51,F53,F55 And Others. Extented Stem Ball Valve Service Underground Pipeline Description: FULLWELDEDBALLVALVE 1.Bow-outproofstem Forthepurposeofpreventingthestemfromflyingoffresultinginabnormalrisingoftheinner Pressureofvalve,shoulderisfixedatthelowerpartofthestem.Inaddition,inordertoprevent Leakageresultingfromburnoutofpackingsetofthesteminafire,thrustbearingissetatthe Contactpositionoftheshoulderatlowerpartofthestemandvalvebody.Thusaninverseseal Seatisformedwhichwillpreventleakageandavoidaccident. 2.Anti-firesafedesign Whenthetrunnionballvalvebeusednormally,itssealedbyseatandballsurface,seatretainer SealedbyO-ringandbody,thisissoftsealedandreliablesealing.WhentheseatandO-ringare Burnt,theseatretainerandbodywillbesealedbyexpandedgraphite.Thusactanti-firesafepurpose. 3.Anti-staticdevice Inordertopreventfrictionamongball,stemandPTFEthatgeneratesstaticelectricitywhichmay Lightthecombustiblesandexplosivesthatcauseanaccident,inthisballvalve,static-conductionspring Issetbetweenthestemandtheball,thestemandthebody.Thusstaticelectricityisconductedto Groundandsystemsafetyissecured. 4.FreeleakageofbodySealedconstruction TheconnectivepositionofvalvebodyandbonnetisdoublesealedbygasketandO-ring,onthis Base,suchfactorsasfire,hightemperature,shockandunevenopeningorclosingofthetorqueall Can'tinduceexternalleakage. 5.Lowtorqueinoperation Theself-lubricatedbea

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