DUAL PLATE CHECK 双瓣对夹止回阀操作手册(英文版).pdf

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1、Ver.2008WaferCheckValveINSTALLATION,OPERATIONANDMAINTENANCEMANUALFBV/IOM/CH01FBV/IOM/CV01Ver2008WaferCheckValveTABLEOFCONTENTS1INTRODUCTION........................................................................................22PURPOSES.........................................................

2、........................................23DESIGNFEATURES.....................................................................................24STRUCTUREANDPARTLIST......................................................................25INSTALLATION...............................................

3、............................................36INSTALLINGPIPELINEFLANGES................................................................47REPAIRS....................................................................................................4APPENDIXI–GENERALARRANGEMENTDRAWINGS.............

4、.....................5www.fbvalve.com1FBV/IOM/CV01Ver2008WaferCheckValve1INTRODUCTIONThedesignofthistypeofcheckvalvehasgoodstructuresandappearance.Thediscsopenundertheflowpressurewithdirectionfrominletporttooutletport.Whentheinletpressureislowerthanoutletpressure,thediscscloseautomaticallyduet

5、odifferentialpressureandweightofthediscsasaresultofpreventingbackflow.ThevalveisdesignedaccordingtoAPI594withfacetofaceasperASMEB16.10andthepipelineflangetoASMEB16.5,thepressuretestofthistypevalveisaccordingtoAPI598.Thistypeofvalveiswidelyusedinindustrieslikepetroleum,water,naturalgasetc.aswel

6、laspowerplant,metallurgyandtextileindustries.2PURPOSESThistypeofvalveiswidelyusedinpetrochemicaladgeneralindustrialpipelinesforpreventingpumpsandotherpowerdrivenmachinefromreversing,aswellasreleasingmediumsinthemachines.3DESIGNFEATURES3.1Discscanautomaticallyclosewiththeeffectsofsprings,fastin

7、closingastokeepthemediumfrombackflowing.3.2Thevalvecanbeinstalledhorizontallyanditislightsothatsupportingseatisnotnecessarilyrequired.3.3Discscanfullyopenwithalittledifferentialpressure,fastspeedandgoodsealingperformance.3.4Flowcoeffici