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Electronic 4-20mA regulating control valve


  • Port size:DN25~300, NPS 1〞~ 12〞
  • Pressure:PN16 ~ 100,150LB ~ 600LB
  • Medium:Water,liquid,air,gas
  • Temperature :-20~450℃
  • Body material:WCB LCB CF8 CF3 CF8M CF3M
  • Description:
  • Electronic 4-20mA regulating control valve Feature

    1. Electronic 4-20mA regulating control valve adopts double sealing surface spool structure,applicable for low leakage requirement;
    2. Electronic 4-20mA regulating control valve  adopts pressure-balanced spool structure, large allowed pressure differential, low noise&steady and reliable actuation;
    3.Electronic electric actuator of  Electronic 4-20mA regulating control valve with servo system, no need the servo amplifier, can work when supplying power and input signal, with small sensitivity to temperature.
  • Electronic 4-20mA regulating control valve specification

    Electronic control valve body type: straight through casting globe type
    Spool type: balanced cage guided sleeve ype
    Nominal size: DN25~300,、 NPS 1〞~ 12〞
    Nominal pressure: PN16 ~ 100、 CLASS 150LB ~ 600LB
    Connection: flange: FF、RF、MF、RTJ
    Welding: SW、BW
    Flange dimension: According to to IEC 60534
    Electronic 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 of control valve: Electric: 3810L series smart actuator, PSL series actuator.
  • Electronic 4-20mA regulating 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,>230℃ is flexible graphite
    Bellows 304/316/316L
    Gasket Normal:Stainless steel with flexible graphite,Special:Metal tooth type gasket
    Control valve stem 2Cr13/17-4PH/304/316/316L
  • Electronic 4-20mA regulating control valve Performance

    Flow characteristic Linear, percentage, quick open
    Allowable range 50: 1
    Rated Cv value Percentage CV10~1400 ,linear CV11~1500
    Allowable leakage Metal seal:Ⅱgrade(0.5% rated capacity)
    Soft seal: V grade
    Leakage standard:  GB/T 4213
    Electronic regulating 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
  • Electronic 4-20mA regulating control valve actuator parameter

    Electrionic Control Valve Type\ Method Electric actuator
    3810L series (R type)
    Intelligent integrated type
    Usage Regulating
    Air supply pressure or Power supply voltage Power: AC 220V±10%  50Hz
    Or Power:  AC 380V±10% 50Hz
    Connector Normal type:  cable inlet 2-PF(G1/2〞)
    Explosive proof:  Protection jacket PF(G3/4〞)
    Direct action Input signal increase, stem descend, valve close.
    Reaction Input signal increase, stem ascend, valve open.
    Input signal Input/output4~20mA.DC
    Lag ≤0.8%FS
    Linear type +1%FS
    Environmental temperature Standard type: -10℃~+60℃
    With space heater : -35℃~+60℃
    Explosive proof: -10℃~+40℃
    Electric Control Valve
    Space heater (normal type)
    Non-standard accessories, need special customized notes.
  • Electronic 4-20mA regulating 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                    
    DN65 40mm                
    DN125 60mm                
    DN250 100mm                
    Electric actuator Electronic 4-20mA regulating control valve
    Metal seal allowable max. pressure difference(MPa)
    Type Thrust(N)
    3810L-08 800 6.4 6.4                    
    3810L-20 2000 6.4 6.4 6.4 5.1                
    3810L-30 3000 6.4 6.4 6.4 6.4 5.7 4.76            
    3810L-50 5000     6.4 6.4 6.4 6.4 6.25          
    3810L-65 6500             6.4 6.4 4.23 3.23    
    3810L-99 10000                 6.4 6.1 3.31 2.07
    3810L-160 16000                     6 4