Carbon Steel Forged Steel Ball Valve / Welded Ball Valve DN50-DN1200 - Product

Other Specification :  CarbonSteelForgedSteelBallValve/WeldedBallValveDN50-DN1200 QuickDetail: Size&Pressure:150#DN50-DN1200 300#DN50-DN1200 600#DN50-DN1200 900#DN50-DN900 1500#DN50-DN600 2500#DN25-DN3000 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-lubricatedbearingsareinstalledatthefrictionofstem,resultinginwearresistance,fiexibility Ofoperationandlowtorque. 6.Doubleblock&bleed(DBB) Whenballisfullopenorcloseposition,thetransmittersubstanceincentercavityofbodycanbe Releasedbydrainageandemptyingdevices.Inaddition,theoverloadedpressu

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