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Pneumatic steam three way control valve


  • Port size:DN15-DN300
  • Pressure:PN10-PN64 CL150-CL600
  • Medium:Steam,hot water,etc.
  • Temperature :-29~450℃
  • Body material:WCB,WC6,WC9,CF8,CF8M,etc.
  • Description:
  • Pneumatic steam three way control valve feature

    1.Pneumatic steam three way control valve is compact structure, light weight, sensitive action, low pressure drop loss, new high allowable pressure, large valve capacity, accurate flow characteristics and convenient maintenance, etc.,
    2.Pneumatic steam three way control valve can be used for various working conditions, especially for the temperature control system of oil industry heat exchange and automatic control of other industries.
    3.Spool structure with side guiding, well stability, no vibration, low noisy, Pneumatic steam three way control valve can bear high pressure difference, easy for connection.
    4.While with low nominal size and pressure difference,Pneumatic steam three way control valve can be used in diverting occasion. However, while nominal size higher than DN100 and high pressure difference,mixting control valve and divertinging control valve can’t be exchanged. 
  • Pneumatic steam three way control valve specification

     Pneumatic  three way control valve Body type:  three way casting globe type
    Spool type: three way double seat spool 
    Nominal size: DN20~300 NPS 3/4〞~ 12〞
    Nominal pressure: PN16 ~ 100、 CLASS 150LB ~ 600LB
    Connection: flange: FF、RF、MF、RTJ
    Welding: SW、BW
    Flange dimension: According to to IEC 60534
    Pneumatic diverting three way 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
    Pneumatic Control valve Actuator: Pneumatic:multi-spring diaphragm actuator, piston type actuator.
  • Pneumatic steam three way 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
    Bellow 304,316,316L
    Gasket Normal:Stainless steel with flexible graphite,Special:Metal tooth type gasket
    Stem 2Cr13/17-4PH/304/316/316L
    Diaphragm Cover Normal:Q235,Special:304
    Diaphragm NBR with reinforced polyester fabric
    Spring Normal:60Si2Mn,Special:50CrVa
  • Pneumatic steam  three way control valve flow direction

  • Pneumatic steam three way control valve performance

    Pneumatic three way control valve Flow characteristic Linear, percentage
    Allowable range  30: 1
    Rated Cv value Percentage / linear CV8.5~1280
    Pneumatic control valve 
    Allowable leakage
    Metal seal:  IV grade(0.01% rated capacity)
    Leakage standard:  GB/T 4213
    Pneumatic steam three way 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