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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 pressure modulating control valve

Model:

  • Port size:DN15-DN300
  • Pressure:PN10-PN64 CL150-CL600
  • Medium:Water,steam,oil,etc.
  • Temperature :-29~450℃
  • Body material:WCB,WCC,CF8,CF8M,etc.
  • Description:
  • Pneumatic pressure modulating control valve Feature

         Pneumatic pressure modulating control valve is composed of the pneumatic multi-springs, pneumatic actuator and the low flow resistance sleeve. Pneumatic pressure modulating control valve uses the balanced valve core, the unbalanced force is small, the permission pressure differential is big, and operation is steady. Compared with the ordinary single and double seat control valve, it has low noise, simple structure and convenient assembling and dismantling characteristics.
             Pneumatic pressure modulating control valve shape is small, the body is light, the performance is good, and the capacity is big. So it's the new type general regulating valve product. Pneumatic pressure modulating control valve is suitable for the common fluid medium and techniques condition industrial control system.
  • Pneumatic pressure modulating control valve specification

    Pneumatic control valve
    Body type:
    straight through casting globe type
    Spool type: balanced cage guided sleeve 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 pressure modulating 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 pressure modulating control valve structure

  • Pneumatic pressure modulating 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 pressure modulating 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
    Pneumatic pressure modulating control valve
    Allowable leakage
    Metal seal:Ⅱgrade(0.5% rated capacity)
    Soft seal: V grade
    Leakage standard:  GB/T 4213
    Pneumatic pressure modulating 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

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