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Pneumatic blowdown control valve


  • Port size:DN25~50, NPS 1〞~ 2〞
  • Pressure:PN25~32Mpa(1500~2500LB)
  • Medium:Water,air,gas
  • Temperature :-29~420℃
  • Body material:WCB A105
  • Description:
  • Pneumatic blowdown control valve feature

    Pneumatic blowdown control valve actuator type can be pneumatic diaphragm actuator,pneumatic piston actuator,electric actuator.Pneumatic blowdown control valve is a kind of anti-cavitation multi-stage pressure reduction valve. The specially designed trim of Pneumatic blowdown control valve enables fluid pressure reduction stage by stage, so that fluid velocity is controlled and cavitation damage is avoided. The throttling part is separable from the sealing face to effectively protect the sealing face. The Pneumatic blowdown control valve trim surface is subjected to hardening treatment, reaching a hardness of about HRC70.  Pneumatic blowdown control valve is featured by good erosion resistance and long service life. A large notch is opened on the plug surface, so that the plug will not be blocked if the fluids contain granules. The Pneumatic blowdown control valve is an ideal solution to the intermittent elimination of indissoluble sediments and impurities in boiler water in power plants. 
  • Pneumatic blowdown control valve technical parameter

    Trim features: top guided unbalanced trim structure
    multi-stage throttle valve plug structure
    Body type: straight-through type angle type
    Bonnet type: standard type  heat dissipation type
    Flow characteristic: equal percentage  linear  quick open
    Size: DN25-50(1”-2”)
    Pressure class: PN25、32Mpa(ANSI 1500、2500LB)
    Leakage class: ASME B16.104 Ⅴ(standard type metal seat)
    Pipe connection type: flange type butt welding type
    Applicable temperature range: less than 420C°
    Actuator type: pneumatic diaphragm actuator
    pneumatic piston actuator
    electric actuator
  • Pneumatic blowdown control valve structure