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SHANGHAI HUIXUAN VALVE

Mobile:+86-17717520739
Wechat:17717520739
Email:info@shxvalve.com

Address: NO.720, Suide Road, Jiading District,Shanghai, China.
 

Pneumatic high pressure steam control valve

Model:

  • Port size:DN65-250 NPS2.5”-10”
  • Pressure:PN16 ~ 100,150LB ~ 600LB
  • Medium:Steam
  • Temperature :-40~450℃
  • Body material:WCB WC6 WC9 CF8 CF3 CF8M CF3M
  • Description:
  • Pneumatic high pressure steam control valve feature

    Pneumatic high pressure steam control valve is a kind of high differential pressure control valve with the pressure balanced cage structure. The trim cage and plug of Pneumatic high pressure steam control valve adopt a mixed multi-hole and tandem structure to make sure there is no occurrence of cavitation when saturated water passes the control valve. With the cage multi-stage throttling, the throttling area gradually increases, which meets the requirements for saturated water vaporization volume expanding, so that fluid velocity is reduced and erosion of trims by the fluids is lowered. The throttling part is separable from the sealing face to effectively protect the sealing face. The Pneumatic high pressure steam control valve trim surface is subjected to hardening treatment, reaching a hardness of about HRC70.Pneumatic HP heater drain control valve is featured by good erosion resistance and long service life. The valve is used for HP heater draining in thermal power plants and can also serve as a deaerator level control valve. The Pneumatic high pressure steam control valve can be pneumatically or electrically controlled. 
  • Pneumatic high pressure steam control valve parameter

    Trim features: multi-level, multi-hole cage
    balanced trim structure
    Body type: straight-through type
    Bonnet type: standard type 
    heat dissipation type
    Flow characteristic: equal percentage
    linear
    Size: DN65-250(2.5”-10”)
    Pressure class: PN1.6、4.0、6.3、10Mpa(ANSI 150、300、600LB)
    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 high pressure steam control valve material

    Component name Control Valve Material
    Body/Bonnet WCB/WC6/WC9/CF8/CF8M/CF3M
    Valve spool/Seat 304/316/316L(overlaying stellite alloy)
    Packing Flexible graphite
    Gasket Normal:Stainless steel with flexible graphite,Special:Metal tooth type gasket
    Diaphragm Cover Normal:Q235,Special:304
    Diaphragm NBR with reinforced polyester fabric
    Spring Normal:60Si2Mn,Special:50CrVa
    Control valve stem 2Cr13/17-4PH/304/316/316L

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