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          Z641H pneumatic valve


          所屬類別:Gate Valve Series

          Z641H pneumatic valve characteristics:
          The actuator 1 pneumatic valve has the positive, reverse two kinds of functions, open, close the valve open, gas gas off in two ways. Gate valve with metal contact unique structure, reliable action, has cut a very high performance, superior than the conventional cut-off valve. Allowable leakage rate up to 10-8 * KV. The use of a wide range, temperature from -196 ℃ to 500 ℃, diameter up to 40mm, to 600mm. seat with parallel, 60 ° V and 90 ° V incision incision three, adapt to different use occasions.
          Heat 2 body available jacket forms, with medium cooling after blockage, using condensation or coking.

          Z641H pneumatic valve material selection:
          1 the valve body, valve cover: ZG230-450 valve plate: 1Cr18Ni9Ti division Chatterley alloy welding rod: 1Cr18Ni9Ti gate: 1Cr18Ni9Ti division Chatterley alloy welding cylinder: seamless steel pipe: aluminum alloy piston ring: oil resistant O rubber
          2 packing: PTFE, flexible graphite

          The main technical parameters of Z641H gas valve:

          Nominal diameter of DN(mm)405080100125150200250300350400450500600
          The rated flow coefficientKV170270510940140022003500850096001300017000550002700038000
          Nominal pressure PN(MPa)1.66.4

          Piston diameter D(mm)120160280360420540

          Operating pressure P(MPa)0.3~0.5

          Medium temperature t(℃)Standard:-20~250; High temperature:250~500; Low temperature:-196~-20

          Allowable leakage10-8×KV

          Flow characteristicsThe linear approximation

          Action modeTo continue, continuous (valve positioner)