China Lined Valve Manufacturers & Suppliers

PTFE PFA FEP Lined Lift Through-Way Check Valve

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

FVF PTFE PFA FEP Lined Lift Through-Way Check Valve

  • FVF lined check valve only allow one way flow direction and prevent the back-flow 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.When it is used as vertical installation, it will not set the spring. Using the disc weight and backflow pressure to achieve the check effect.
  • 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.

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