China Lined Valve Manufacturers & Suppliers

Pneumatic FEP Lined Single Seat Control Valve

Place of Origin:
Suitable Packing for Sea/Air Transport
-29℃ ~180℃
Pneumatic FEP Lined Control Valve

FVF Pneumatic FEP Lined Single Seat Control Valve

  • FVF pneumatic/electric lined control valve is the execution unit in automation instrument system.It consists of many spring film actuators/electric actuators and through-way fluorine-lined single-seat regulator. It is installed on the medium pipeline and operated with other instrument to control parameters such as flow rate etc. 
  • Due to the wetted parts of valve are lined with fluorine plastic (PTFE, PFA, FEP),it has better performance in corrosion resistance and sealing and its installation has better reliability. 
  • It’s suitable for any corrosive medium except for molten alkali metals and fluorine element. The lined control valves are widely used in petrochemical, electric power, metallurgy, pulp & paper and other industrial automation device.

Product Parameter

Materials of Main Parts

No. Part Name Material List
1 Body/Bonnet WCB CF8 CF8M CF3 CF3M
2 Disc/Stem 1Cr13 1Cr18Ni9 00Cr17Ni4Mo2 1Cr18Ni9 00Cr17Ni4Mo2
3 Lining/Seat FEP     PTFE      PFA      PO
4 Packing PTFE
5 Packing Gland WCB CF8 CF8M CF3 CF3M

Technical Specification

Seat diameter (mm) 20 25 25 32 32 40 40 50 50 65 65 80 80 100 100 110 125 150 175
Rated Cv 5 10 10 16 16 24 24 44 44 68 68 125 125 165 165 195 330 360 460
Rated travel 16mm 25mm 38mm 50mm 60mm
Actual pressure Maxmum 1.0 MPa (1.6 MPa customised)
Nominal pressure I.0MPa, 1.6MPa
Working temperature -29°C-180°C
Trim Single seat plunger valve core
Flow characteristic Linear, equal percentage
Adjustable range 50:1
Equipped with ZJHA/B Multi-springs Diaphragm Pneumatic Actuators
Model ZJHA/B-22 ZJHA/B-23 ZJHA/B-34 ZJHA/B-45
Action mode ZJHA type actuator refer to "air-to-close" action: ZJHB actuator refer to "air-to-open" action
Pressure supply According to the scope of spring: 0.02-0.10, 0.04-0.20, 0.08-0.24 Mpa. Respectly are 0.14, 0.25, 0.35 MPa
Air supply connection Rc1/4
Basic error Without positioner:±5%; With posilioner:±1%;
Backlash Without positioner: 3%; With positioner: 1%;
Dead zone Without positioner: 3%; With positioner: 0.4%;
End point deviation Without positioner: opening point±2.5%, terminal point±5%;closing point±5%, terminal point±2.5%. With positioner error from beginning to end is ±1%;
Travel deviation ±2.5%
Leakage rate No more than 10 of rated CV
Optional accessories positioner, air set, solenoid valve, limit switch etc. (according to the order)