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SHANGHAI HUIXUAN VALVE

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Email:info@shxvalve.com

Address: NO.720, Suide Road, Jiading District,Shanghai, China.
 

Pneumatic fluorine PTFE PFA lined control valve

Model:

  • Port size:DN20~150, NPS 3/4〞~ 6〞
  • Pressure:PN16 ~ 25 CLASS 150/300LB
  • Medium:acid, alkali, aqua wang etc.
  • Temperature :-20~150℃
  • Body material:WCB CF8 CF3 CF8M CF3M
  • Description:
  • Pneumatic fluorine PTFE PFA lined control valve Feature

    Pneumatic fluorine PTFE PFA lined control valve is composed of pneumatic diaphragm actuator,straight through single seat fluoride (PTFE,FEP,PFA) Lined structure.Pneumatic fluorine lined control valve contacted with the corrosive medium adopts the corrosion-resistant, anti-aging PTFE,PEP,PRA, the high pressure lining fluorine plastic process.Pneumatic fluorine PTFE PFA lined control valve is capable of controlling the flow of acid, alkali, aqua wang and other highly corrosive media, toxic volatile gas and liquid media.Therefore, Pneumatic fluorine PTFE PFA lined control valve is widely used in chemical, metallurgy, medicine and other industries.
    Pneumatic fluorine PTFE PFA lined control valve Features as below:
    1. Good corrosion resistance: the inner cavity of  Pneumatic fluorine lined control valve body, core, seat are lined with 3mm thick fluorine (PTFE,PEP,PRA) , 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 fluorine lined control valve core and seat are soft seal, leakage was far below the national Ⅳ level standard.
    4. High adjustment accuracy: Pneumatic fluorine lined control valve adopts precise and small pneumatic and electric actuators, small in size and light in weight.

  • Pneumatic fluorine PTFE PFA lined control valve Specification 

    Pneumatic fluorine PTFE PFA lined 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 fluoride lined control valve Bonnet type: Ⅰ:standard type(-29℃~150℃)
    Packing: V type PFTE packing, flex. graphite packing, etc.
    Gasket: Metal graphite packing
    Actuator: Pneumatic: multi-spring diaphragm actuator, piston type actuator.
  • Pneumatic fluorine PTFE PFA lined control valve structure

  • Pneumatic fluorine PTFE PFA lined control valve material

    Component name Control Valve Material
    Body/Bonnet WCB/CF8/CF8M/CF3M
    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 fluorine PTFE PFA lined control valve performance

    Pneumatic fluorine PTFE PFA lined control valve  Flow characteristic Linear, percentage, quick open
    Allowable range 30: 1
    Rated Cv value Percentage CV6.3~400 ,linear CV6.9~440
    Pneumatic fluorine PTFE PFA lined control valve
    Allowable leakage
    Soft seal:  VI grade(foam grade)
    Leakage standard:  GB/T 4213
    Pneumatic fluorine PTFE PFA lined 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 fluorine PTFE PFA lined control valve actuator parameter

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