Flowserve V-376 R4 Edward Valves Manuale Utente

Edward ValvesMaintenance Manual for EdwardForged Steel ValvesBolted and Screwed Bonnet TypesV-376 R3V-376 R4

11Flow Control DivisionEdward ValvesWARNINGEdward valves are not provided with a pres-sure relief device. A pressure relief devicemust be provided els

Flow Control DivisionEdward ValvesFlowserve Corporation has established industry leadership in the design and manufacture of its products. When proper

3Flow Control DivisionEdward ValvesContentsServicing Edward Forged Steel Valves ...3Introduction ...4Seats and Se

4Flow Control DivisionEdward ValvesServicing Edward Forged Steel ValvesTypical Valve DesignsFig. 1048YBolted Bonnet Stop,Bolted Gland, O.S.& YBolt

5Flow Control DivisionEdward ValvesIntroductionThis manual is provided to help youservice your Edward Forged Steel valves.Before disassembling any val

6Flow Control DivisionEdward ValvesSeatsEdward valve seats are of two types:screwed-in (with “O”- Ring Seal) or integralwith the valve body.Screwed-in

7Flow Control DivisionEdward ValvesDisksIn all Edward valves, disks are designed toswivel on the valve stem. They are held inplace by either a “T”-slo

8Flow Control DivisionEdward ValvesThe guides must be close enough to bringthe disk accurately down into the seat tomake a tight joint.Fig. 160Screwed

9Flow Control DivisionEdward ValvesPacking Chamber SchematicValves of the Fig. 158, 5158, 9158 (seepg. 3) type have a packing nut withthreads that sho

10Flow Control DivisionEdward ValvesValves of the screwed bonnet/cover typeconstruction are sealed at the bonnet byflat, soft metal gaskets and “O”- R