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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.
 

Cage guided pneumatic control valve

Model:

  • Port size:DN25~300, NPS 1〞~ 12〞
  • Pressure:PN16 ~ 100,150LB ~ 600LB
  • Medium:Water,oil,steam,gas
  • Temperature :-196~450℃
  • Body material:WCB LCB CF8 CF3 CF8M CF3M
  • Description:
  • Cage guided pneumatic control valve Feature

    01.Cage guided pneumatic control valve adopts double sealing surface spool structure, applicable for low leakage requirement;
    02.Cage guided pneumatic control valve adopts pressure-balanced spool structure, allowed large pressure differential, low noise and steady and reliable actuation;
    03.Actuator of Cage guided pneumatic control valve adopts  multi-spring circular equal layout, using high strength rubber diaphragm actuation parts,with small structure and large output force
  • Cage guided pneumatic 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
    Cage guided pneumatic 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.
  • Cage guided pneumatic control valve structure

  • Cage guided 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
  • Cage guided pneumatic 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
  • Cage guided pneumatic 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
    ZH23~ZH56
    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℃
    Cage guided pneumatic control valve
    Accessories
    E/P, P/P valve positioner, filter regulator, valve converter, solenoid valve, limited switch
    Non-standard accessories, need special customized notes.
  • Cage guided pneumatic control valve technical parameter

    Seat diameter(mm) 25 32 40 50 65 80 100 125 150 200 250 300
    Rated Cv Percentage 10 16 25 40 63 100 160 250 400 630 1000 1400
    Linear 11 17.6 27.5 44 69 110 176 275 440 690 1100 1500
    Nominal size Travel Option flow coefficient, Cv(★standard ●recommended ○customized)
    DN25 16 mm                      
    DN32 25 mm                    
    DN40                  
    DN50                
    DN65 40mm                
    DN80              
    DN100            
    DN125 60mm                
    DN150                
    DN200              
    DN250 100mm                
    DN300                
    Pneumatic actuator,Diaphragm effective area, Ae (cm2) ZHA/B-23 ZHA/B-34 ZHA/B-45 ZHA/B-56
    350 560 900 1600
    Action Spring range Cage guided pneumatic control valve
    Metal seal allowable pressure difference(MPa)
    Air to open 20-100KPa 3 2.25 2.25 1.95 2.36 2.04 1.67 1.41 1.41 1.14 0.65 0.55
    40-200 KPa 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 1.55 1.4
    80-240 KPa 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 4.08 4.08
    Air to close 20-100KPa 1.5 1.13 1.13 0.98 1.18 1.02 0.84 0.71 0.71 0.57 0.65 0.55
    40-200 KPa 4.5 3.38 3.38 2.93 3.54 3.06 2.51 2.12 2.12 1.71 1.8 1.55
    80-240 KPa 6.4 6.4 6.4 6.4 6.4 6.4 5.85 4.94 4.94 4 4.08 3.65


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