PTFE Seat Hard Seat Back Wafer Butterfly Valve
Basic Info
Compare to the EPDM Seat butterfly valve, the PTFE Seat has some more advantages.
- Corrosion resistance: PTFE has excellent corrosion resistance to various corrosive liquids, including strong acids, strong alkalis, etc.
- Temperature Range: PTFE can withstand higher temperatures than EPDM，while It has a temperature range of approximately -250°C to +260°C (-418°F to +500°F)..
- Versatility: PTFE is also called “Plastic King” in China, so it is suitable for different types of media, whether it is corrosive or non-corrosive fluid.
- Low Friction: PTFE has a low coefficient of friction, reducing wear on valve components, as a result, it can increases service life and reduces maintenance.
- Universal Sealing Material: PTFE is a universal sealing material， as it is compatible with various flanges and gaskets.
Paraments
DN50-DN200
| SIZE | D1 | D2 | D3 | N×φD | α° | F | G | A | B | C | E |
| DN50(2″) | 52.6 | 100 | 120.6 | 4×19 | 45 | 52 | 266.7 | 273 | 161 | 43 | 32 |
| DN100(4″) | 104 | 156 | 190.5 | 8×19 | 22.5 | 52 | 266.7 | 346 | 200 | 52.1 | 32 |
| DN150(6″) | 155.6 | 212 | 241.3 | 8×22.4 | 422.5 | 52 | 266.7 | 397 | 226 | 55.8 | 32 |
| DN200(8″) | 202.4 | 264 | 298.4 | 8×22.4 | 422.5 | 52 | 359 | 485 | 260 | 60.6 | 45 |
DN200-DN350
| SIZE | A | B | C | D1 | D2 | N×D3 | α ° | D4 | E | F | G |
| DN200(8〞) | 514 | 260 | 60.6 | 202.4 | 298.4 | 8×22.4 | 22.5 | 268 | 72.5 | 247.5 | 62.75 |
| DN250(10″) | 574 | 292 | 65.6 | 250.5 | 361.9 | 12×25.4 | 15 | 325 | 72.5 | 247.5 | 62.75 |
| DN300(12〞) | 662 | 337 | 76.5 | 301.5 | 431.8 | 12×25.4 | 15 | 403 | 80 | 237 | 80 |
| DN350(14″) | 717 | 368 | 76.2 | 333.32 | 476.2 | 12×28.4 | 15 | 436 | 80 | 237 | 80 |
Manufacture Process
Certificates
