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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 PFA PTFE lined globe control valve

Model:

  • Port size:DN20~300, NPS 3/4〞~ 12〞
  • Pressure:PN16 ~ 100,150LB ~ 600LB
  • Medium:acid, alkali, aqua wang etc.
  • Temperature :-20~150℃
  • Body material:WCB+PFA/PTFE,304+PFA/PTFE
  • Description:
  • Pneumatic PFA PTFE lined globe control valve Feature

    Pneumatic PFA PTFE lined globe control valve Features as below:
    1. Good corrosion resistance: the inner cavity of  Pneumatic PFA PTFE lined globe control valve body, core, seat are lined with 3mm thick fluorine (PTFE,PEP,PFA) , which can withstand strong corrosive fluid.
    2. Good sealing performance: double sealing with PTFE bellows and packing.
    3. The leakage quantity is little, because the Pneumatic PFA PTFE lined globe control valve core and seat are soft seal, leakage was far below the national Ⅳ level standard.
    4. High adjustment accuracy: Pneumatic PFA PTFE lined globe control valve adopts precise and small pneumatic and electric actuators, small in size and light in weight.

  • Pneumatic PFA PTFE lined globe control valve Specification 

    Pneumatic PFA PTFE lined globe control valve Body type: straight through casting globe type
    Fluoride (PTFE,FEP,PFA)  lined 
    Spool type: non-balanced single seat plug 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 PFA PTFE lined globe control valve Bonnet type: Ⅰ:standard type(-29℃~150℃)
    Packing: V type PFTE packing, flex. graphite packing, etc.
    Gasket: Metal graphite packing
    Pneumatic PFA PTFE lined globe control valve Actuator: Pneumatic: multi-spring diaphragm actuator, piston type actuator.
  • Pneumatic PFA PTFE lined globe control valve structure

  • Pneumatic PFA PTFE lined globe control valve material

    Component name Control Valve Material
    Body/Bonnet WCB/CF8/CF8M/CF3M+PFA/PTFE
    Lined Material PTFE,FEP,PFA
    Control Valve spool/Seat 304/316/316L Lined PTFE/FEP/PFA
    Packing PTFE
    Gasket PTFE
    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 PFA PTFE lined globe control valve performance

    Pneumatic PFA PTFE lined globe control valve Flow characteristic Linear, percentage, quick open
    Allowable range 30: 1
    Rated Cv value Percentage CV6.3~400 ,linear CV6.9~440
    Pneumatic PFA PTFE lined globe control valve
    Allowable leakage
    Soft seal:  VI grade(foam grade)
    Leakage standard:  GB/T 4213
    Pneumatic PFA PTFE lined globe control valve Performance
    Intrinsic error(%) ±1.5
    Return difference(%) ≤1.5
    Dead zone(%) ≤0.6
    Difference from beginning to end point(%) ±2.5
    Rated travel difference(%) ≤2.5
  • Pneumatic PFA PTFE lined globe control valve actuator parameter

    Pneumatic PFA PTFE lined globe 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℃
    Pneumatic PFA PTFE lined globe control valveAccessories E/P, P/P valve positioner, filter regulator, valve converter, solenoid valve, limited switch
    Non-standard accessories, need special customized notes.
  • Pneumatic PFA PTFE lined globe control valve technical parameter

    Nominal size, DN 20 25 32 40 50 65 80 100 125 150
    Rated flow coefficient, Cv Percentage   8 12 20 32 50 70 100 200 240
    Linear 5 10 16 25 38 63 80 120 220 300
    Travel 16mm 25 mm 40mm 60mm
    Pneumatic actuator
    Diaphragm effective area, Ae (cm2)
    ZHA/B-22 ZHA/B-23 ZHA/B-34 ZHA/B-45
    350 350 560 900
    Action Spring range Pneumatic PFA PTFE lined globe control valve 
    Max. allowable pressure difference(MPa)
    Air open 20-100KPa 1.16 0.7 0.44 0.28 0.18 0.17 0.11 0.07 0.07 0.05
    40-200 KPa 3.34 2.14 1.31 0.84 0.53 0.51 0.33 0.21 0.22 0.15
    80-240 KPa 6.4 4.99 3.05 1.95 1.25 1.18 0.78 0.5 0.51 0.36
    Air close 20-100KPa 2.23 2.14 0.87 0.56 0.35 0.34 0.22 0.14 0.15 0.1
    40-200 KPa 6.4 6.4 5.86 3.64 2.3 2.21 1.43 0.91 0.95 0.66
    80-240 KPa 6.4 6.4 6.4 5.04 3.18 3.06 1.98 1.26 1.32 0.92
     

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