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Electric diaphragm control valve


  • Port size:DN20~200, NPS 3/4〞~ 8〞
  • Pressure:PN10 ~ PN16、 CLASS 150LB
  • Medium:Weak acid,alkali,etc.
  • Temperature :-29~150℃
  • Body material:WCB,304SS,316SS
  • Description:
  • Electric diaphragm control valve Feature

    Electric diaphragm control valve has simple structure, small flow resistance, larger flow capacity than other control valve of the same caliber, no leakage, and Electric diaphragm control valve can be used for the regulation of high viscosity and suspended particle fluid. Electric diaphragm control valve is suitable for the regulation of strong alkali and corrosive media according to the different diaphragm materials (rubber NR,NBR,EPDM or Plastic PTFE,PFA,FEP ).Electric diaphragm control valve is composed of diaphragm valve and pneumatic film actuator.
    Electric diaphragm control valve feature as below:
    1 Electric diaphragm control valve is with light actuator, the height and weight can be reduced by 30%.
    2 The inner surface of the Electric diaphragm control valve body is covered with a various materials to avoid direct contact with the medium and withstand the corrosion of the corrosive medium.
    3 When the Electric diaphragm control valve is closed, the leakage is zero, which is especially suitable for the highly toxic medium.
    4 The flow path of Electric diaphragm control valve is simple, the resistance is small, the rated flow coefficient ratio is bigger than single seat,cage guided control valve with the same caliber.

  • Electric diaphragm control valve Specification 

    Body type: Diaphragm valve
    Nominal size: DN15~200 NPS 1/2〞~ 8〞
    Nominal pressure: PN10 ~ PN16、 CLASS 150LB
    Connection: flange: FF、RF
    Flange dimension: According to to JB/T13927 ANSI B16.5 Class150
    Bonnet type: Ⅰ:standard type(-29℃~150℃)
    Packing: V type PFTE packing, flex. graphite packing, etc.
    Gasket: Metal graphite packing
    Actuator: Electric: 3810L series smart actuator, PSL series actuator.
  • Electric diaphragm control valve structure

  • Electric diaphragm control valve valve material

    Component name Diaphragm Control Valve Material
    Body/Bonnet WCB/CF8/CF8M
    Bonnet WCB/CF8/CF8M
    Diaphragm Rubber :Nature rubber ,NBR,EPDM or Plastic:PTFE,PFA,FEP )
    Liner Normal::Nature rubber ,others:NBR,EPDM,PTFE,PFA,FEP
    Diaphragm Cover Normal:Q235,Special:304
    Actuator Diaphragm NBR with reinforced polyester fabric
    Spring Normal:60Si2Mn,Special:50CrVa
    Control valve stem 2Cr13/17-4PH/304/316/316L
  • Electric diaphragm control valvetype code     

    Z Actuator H Structure Nominal size Body material Bonnet type Nominal pressure
    Z series control valve R: electric 3810L actuator
    D: electric PSL actuator
    H:direct travel
    GF4: PTFE lined diaphragn control valve
    GF46: PEP lined diaphragm control valve
    GFa: PFA lined diaphragm control valve
    DN25= NPS1〞=25
    DN50= NPS2〞=50
    D=special material
    Ⅰ:standard type(-20℃~150℃)
    CL150LB=150 LB
    Such as:  Z type electric diaphragm control valve, PTFE lined ,PN16, body:  WCB, nominal size:  DN50, type:  ZRHPF4-50CⅠ-16
  • Electric diaphragm control valve performance

    Electric diaphragm control valve Flow characteristic Approximately quick open
    Allowable range 30: 1
    Rated Cv value Percentage CV6.3~400 ,linear CV6.9~440
    Electric diaphragm control valve
    Allowable leakage
    Soft seal:  VI grade(foam grade)
    Leakage standard:  GB/T 4213
    Electric diaphragm 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
  • Electric diaphragm control valve actuator parameter

    Electric diaphragm control valve
    Type\ Method
    Electric actuator
    3810L series
    Intelligent integrated type
    Usage Regulating
    Air supply pressure or Power supply voltage Power: AC 200V±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 diaphragm control valve
    Space heater (normal type)
    Non-standard accessories, need special customized notes.