Corrosion-Resistant PTFE Double Flanged Butterfly Valve | Top China Suppliers & Factory
High Corrosion Resistance: PTFE can be applied to highly corrosive chemical media.
Split Design: Makes disassembly and replacement of parts more convenient.
Leakage Prevention: The upper and lower cover design effectively prevents leakage.
Wide Application: Suitable for chemical industry, pharmaceuticals, food, papermaking, etc.
| Pressure test | PN10 | PN16 | |
|---|---|---|---|
| Shell | 15bar | 24bar | |
| Seal | Water | 11bar | 17.6bar |
| Air | 6bar | 6bar | |
| No. | Part Name | Materials | No. | Part Name | Materials |
|---|---|---|---|---|---|
| 1 | Cover | DI | 6 | Seat | PTFE |
| 2 | Body | DI | 7 | Pressing sleeve | Q235 |
| 3 | Stem | SS410 | 8 | Bolt | SS201 |
| 4 | O ring | EPDM | 9 | Gland | DI |
| 5 | Disc | DI+PTFE | 10 | Wormgear | DI |
| DN | L | A | B | ∅F | n-∅d1 | S | H | ∅D | ∅D1 | N-∅d | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PN10 | PN16 | PN10 | PN16 | PN10 | PN16 | ||||||||
| 50 | 108 | 130 | 83 | 70 | 4-∅10 | 11 | 25 | 165 | 165 | 125 | 125 | 4-∅18 | 4-∅18 |
| 65 | 112 | 140 | 93 | 70 | 4-∅10 | 11 | 25 | 185 | 185 | 145 | 145 | 4-∅18 | 4-∅18 |
| 80 | 114 | 149 | 100 | 70 | 4-∅10 | 14 | 25 | 200 | 200 | 160 | 160 | 8-∅18 | 8-∅18 |
| 100 | 127 | 156 | 110 | 70 | 4-∅10 | 14 | 28 | 220 | 220 | 180 | 180 | 8-∅18 | 8-∅18 |
| 125 | 140 | 177 | 125 | 70 | 4-∅10 | 14 | 28 | 250 | 250 | 210 | 210 | 8-∅18 | 8-∅18 |
| 150 | 140 | 200 | 143 | 102 | 4-∅12 | 17 | 28 | 285 | 285 | 240 | 240 | 8-∅22 | 8-∅22 |
| 200 | 152 | 225 | 170 | 102 | 4-∅12 | 17 | 35 | 340 | 340 | 295 | 295 | 8-∅22 | 12-∅22 |
| 250 | 165 | 280 | 203 | 125 | 4-∅14 | 22 | 40 | 395 | 405 | 350 | 355 | 12-∅22 | 12-∅26 |
| 300 | 178 | 309 | 230 | 140 | 4-∅18 | 27 | 40 | 445 | 460 | 400 | 410 | 12-∅22 | 12-∅26 |
| 350 | 190 | 325 | 260 | 140 | 4-∅18 | 27 | 40 | 505 | 520 | 460 | 470 | 16-∅22 | 16-∅26 |
| 400 | 216 | 371 | 290 | 140 | 4-∅18 | 27 | 50 | 565 | 580 | 515 | 525 | 16-∅26 | 16-∅30 |
| 450 | 222 | 392 | 330 | 165 | 4-∅22 | 32 | 50 | 615 | 640 | 565 | 585 | 20-∅26 | 20-∅30 |
| 500 | 229 | 431 | 358 | 165 | 4-∅22 | 32 | 60 | 670 | 715 | 620 | 650 | 20-∅26 | 20-∅33 |
| 600 | 267 | 505 | 435 | 254 | 8-∅18 | 40 | 70 | 780 | 840 | 725 | 770 | 20-∅30 | 20-∅36 |
What is a PTFE lined butterfly valve?
It is a type of butterfly valve that utilizes a disc lined with PTFE (polytetrafluoroethylene) to control fluid flow. The PTFE material ensures high chemical resistance and low friction.
What are the main advantages of using a PTFE lining?
The primary advantage is its exceptional chemical resistance against acids, alkalis, and highly corrosive or toxic chemicals. It also features high temperature tolerance and prevents contamination.
What industries commonly use these valves?
Because of their robust chemical resistance, they are widely used in the chemical, petrochemical, pharmaceutical, food, papermaking, and power generation industries.
What is the working temperature range for this product?
The standard working temperature range for our PTFE lined double flanged butterfly valve is between -20℃ and 200℃.
Are these valves suitable for high-purity applications?
Yes. PTFE is highly resistant to contamination and does not release any toxic substances into the fluid, making it ideal for high-purity and sanitary applications.
What operation types are available?
These valves are available in both manual operation and actuated operation, which includes pneumatic or electric actuators to meet your specific system requirements.