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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 cage type single seat control valve

Model:

  • Port size:DN20~300, NPS 3/4〞~ 12〞
  • Pressure:PN16 ~ 100,150LB ~ 600LB
  • Medium:Water,oil,steam,gas
  • Temperature :-196~450℃
  • Body material:WCB LCB CF8 CF3 CF8M CF3M
  • Description:
  • Pneumatic cage type single seat control valve Feature

    pneumatic Cage type single seat valves with excellent anti-cavitation performance are available for severe service in high temperature and high differential pressure.Pneumatic cage type single seat control valve can be provided to meet a variety of body material specifications, such as: carbon steel, which is generally used with water, steam, and fuel oil; highly corrosion resistant stainless steel, which is essential for controlling corrosive fluids; and resin. Pneumatic cage type single seat control valve Bellows seal for special medium, Extended bonnet for low temperature,Finned bonnet for high temperature.
  • Pneumatic cage type single seat control valve Specification

    Pneumatic control valve
    Body type:
    straight through casting globe type
    Spool type: non-balanced single seat plug type
    Nominal size: DN20~200,、 NPS 3/4〞~ 8〞
    Nominal pressure: PN16 ~ 100、 CLASS 150LB ~ 600LB
    Connection: flange: FF、RF、MF、RTJ
    Welding: SW、BW
    Flange dimension: According to to IEC 60534
    Pneumatic cage type single seat control valve Bonnet type: Ⅰ:standard type(-20℃~230℃)
    Ⅱ:Radiator type: (-45℃~ high than 230℃ occasion)
    Ⅲ:Low temperature extended type(-196℃~ -45℃)
    Ⅳ:Bellow seal type
    Ⅴ:Warm insulation Jacket type
    Packing: V type PFTE packing, flex. graphite packing, etc.
    Gasket: Metal graphite packing
    Actuator: Pneumatic: multi-spring diaphragm actuator, piston type actuator.
  • Pneumatic cage type single seat control valve  Material 

    Component name Control Valve Material
    Body/Bonnet WCB/WCC/WC6/CF8/CF8M/CF3M
    Valve spool/Seat 304/316/316L(overlaying stellite alloy)
    Packing Normal:-196~150℃ is PTFE,RTFE,>230℃ is 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
  • Pneumatic cage type single seat control valve Performance

    Pneumatic cage type single seat control valve 
    Flow characteristic
    Linear, percentage, quick open
    Allowable range 50: 1 (CV<6.3 30: 1)
    Rated Cv value Percentage CV1.6~630 ,linear CV1.8~690
    Pneumatic control valve Allowable leakage Metal seal:  IV grade(0.01% rated capacity)
    Soft seal:  VI grade(foam grade)
    Leakage standard:  GB/T 4213
    Pneumatic cage type single seat control valve  Performance
    Intrinsic error % ±1.5
    Return difference, % ≤1.5
    Dead zone, % ≤0.6
    Difference from beginning to end point, % ±2.5
    Rated travel difference, % ≤2.5


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