PTFE PFA FEP Lined Dual Plate Wafer Check Valve
- Place of Origin:
- Wenzhou,China
- Packing:
- Suitable Packing for Sea/Air Transport
- Connection:
- Wafer Type
- Pressure:
- PN10,PN16,150LBS
- Temperature:
- PTFE:-29℃ ~180℃, PFA:-29℃~200℃, FEP:-29℃~150℃
FVF PTFE PFA FEP Lined Dual Plate Wafer Check Valve
- The dual plate check valve is an all purpose non return valve that is much stronger, lighter in weight and smaller in size compared to a conventional swing check valve or lift check valve. The double plate check valve employs two spring-loaded plates hinged on a central hinge pin.
- In addition to the valve body and valve disc, the return spring is also fully lined with corrosion-resistant fluorine materials. The reasonably designed spring enables the valve disc to generate sufficient sealing specific pressure in the low-pressure area.And it ensures the reliability of the valve sealing in the low pressure area.
- 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. | ||||
