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

Pneumatic cage guided control valve


  • Port size:DN20~300, NPS 3/4〞~ 12〞
  • Pressure:PN16 ~ 100,150LB ~ 600LB
  • Medium:Water,oil,steam,gas
  • Temperature :-40~450℃
  • Body material:WCB LCB CF8 CF3 CF8M CF3M
  • Description:
  • Pneumatic cage guided control valve Feature

    Pneumatic cage guided control valve adopts pressure-balanced spool structure, allowed large pressure differential, low noise and steady and reliable actuation;Actuator of Pneumatic cage guided control valve multi-spring circular equal layout, using high strength rubber diaphragm actuation parts,with small structure and large output force
  • Pneumatic cage guided control valve specification

    Pneumatic control valve
    Body type:
    straight through casting globe type
    Spool type: balanced cage guided sleeve type
    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 cage guided 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.

  • HCB Balance Cage Pneumatic 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 guided control valve performance

    Pneumatic control valve Flow characteristic Linear, percentage, quick open
    Allowable range 50: 1
    Rated Cv value Percentage CV10~1400 ,linear CV11~1500
    ZJHM Pneumatic Cage guided control valve
    Allowable leakage
    Metal seal:Ⅱgrade(0.5% rated capacity)
    Soft seal: V grade
    Leakage standard:  GB/T 4213
    ZJHM Pneumatic cage guided control valve Performance
    Intrinsic error (%) ±1.0
    Return difference(%) ≤1.0
    Dead zone(%) ≤1.0
    Difference from beginning to end point(%) ±2.5
    Rated travel difference(%) ≤2.5
  • Pneumatic cage guided control valve special requirement

    Special test Material penetration flaw detection (PT), radiator test (RT), flow characteristic test,
    low temperature test.
    Special treatment Trim nitrogen treatment, seat hard alloy treatment.
    Special rinse Degreasing and dehydration treatment
    Special condition Special piping or connection, vacuum condition, S.S fastener, special coating.
    Special dimension Customized face to face length or dimension
    Test and inspection Third party test report
  • Pneumatic cage guided control valve actuator parameter

    Pneumatic control valve
    Type\ Method
    Pneumatic diaphragm actuator
    Multi-spring type
    Usage Regulating type, ON-OFF type
    Air supply pressure or Power supply voltage Air supply pressure (Spring range)
    140(20~100)Kpa G
    240 (40~200) Kpa G
    280 (80~240) Kpa G
    Connector Air pipe connector: RC1/4
    Direct action Pressure increase, stem descend, valve close.
    Reaction Pressure increase, stem ascend, valve open.
    Input signal 40~20mA.DC(with positioner)
    Lag ≤1%FS(with positioner) 
    Linear type 2%FS(with positioner)
    Environmental temperature -10℃~+70℃
    Pneumatic cage guided control valve
    E/P, P/P valve positioner, filter regulator, valve converter, solenoid valve, limited switch
    Non-standard accessories, need special customized notes.
  • Pneumatic cage guided control valve technical parameter

    Pneumatic cage guided control valvee CV values and stroke

    I、Pneumatic cage guided control valve: high capacity Spool(%V、LV)

    Nominal diameter 32 40 50 65 80 100 125 150 200 250 300 350
    Seat diameter 32 40 50 65 80 100 125 150 200 250 300 350
    Rated Cv value The percentage of properties 24 36 60 100 140 220 320 420 820 1000 1440 1900
    Linear characteristic 26 40 75 110 150 240 365 435 850 1035 1490 2000
    Rated travel 25 38 50 75 100 150

    II、Pneumatic cage guided control valve:High Precision Flow characteristics Spool (% VF, EVF)
    The datasheet see our catelogue.