China Lined Valve Manufacturers & Suppliers

PTFE FEP PFA Lined Wafer Type Check Valve

Place of Origin:
Suitable Packing for Sea/Air Transport
Wafer Type
PTFE:-29℃ ~180℃, PFA:-29℃~200℃, FEP:-29℃~150℃
Lined Wafer Type Check Valve

FVF PTFE FEP PFA Lined Wafer Type Check Valve

  • FVF lined check valve only allow one way flow direction and prevent the back-low of liquids in pipeline. Generally check valve is automatically working. under the pressure function of one direction flow, the disc open, while when the liquid back flows, the valve will cut flow. 
  • FVF fully lined wafer swing check valve is of two-piece construction with only one moving part, ideal to use in totally lined piping systems in corrosion applications. The valve can be mounted horizontally or vertically with upward flow.
  • FVF lined check valve is mainly used in chemical industries,such as sulfuric acid, alkali etc.

Product Parameter

Materials of Main Parts

No. Part Name Material List
1 Body/Bonnet HT250 WCB CF8 CF8M CF3 CF3M
2 Disc/Stem 25                                           1Cr18Ni19/CF8                            00Cr17Ni14Mo2/CF3M
3 Lining/Seat PCTFE(F3)          FEP(F46)          PTFE(F4)          PFA          PO
4 Bolt 35 35 0Cr18Ni9 0Cr18Ni9 0Cr18Ni9 0Cr18Ni9
5 Nut 45 45 0Cr18Ni9 0Cr18Ni9 0Cr18Ni9 0Cr18Ni9

Technical Specification

Design & Manufacture Standard GB/T 12236 API 6D
Face-to-face Dimension Standard GB/T 12221 ASME B16.10
Flange Standard HG/T 20592 ASME B16.5
Inspection and Test Standard GB/T 13927 API 598
Nominal Pressure 1.0MPa 1.6Mpa 150LB
Test Pressure Shell Test 1.5MPa 1.5MPa 1.5MPa
High Pressure Sealing 1.1MPa 1.1MPa 1.1MPa
Low Pressure Sealing 0.6MPa 0.6MPa 0.6MPa
Temperature Range PFA:-29℃~200℃    PTFE:-29℃~180℃  FEP:-29℃~150℃
Applicable Medium Strong corrosive medium i.e.hydrochloric acid,Nitric acid,Hydrofluoric acid,Liquid chlorine,Sulfuric acid and Aqua regia etc.
Note:Test standard refers to general valve standard,high pressure should be customized for processing.