Fully Lined PTFE Lug Butterfly Valve for Chemical Industry | China Suppliers and Factory
| 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 | 9 | Junk ring | Q235 | ||
| 2 | Bottom body | DI | 10 | Spring plate | Steel | ||
| 3 | Pressing sleeve | Q235 | 11 | Upper body | DI | ||
| 4 | O ring | EPDM | 12 | Pressing sleeve | Q235 | ||
| 5 | Seat | EPDM | 13 | Gland | DI | ||
| 6 | Disc | DI+EPDM | 14 | Gasket | Silicone | ||
| 7 | Upper shaft | SS410 | 15 | Wormgear | DI | ||
| 8 | O ring | EPDM | |||||
| DN | L | A | B | ∅F | n-∅d1 | S | H | PN10 | PN16 | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ∅D | ∅D1 | N-M | ∅D | ∅D1 | N-M | ||||||||
| 50 | 43 | 122 | 71 | 70 | 4-∅10 | 11 | 25 | 165 | 125 | 4-M16 | 165 | 125 | 4-M16 |
| 65 | 46 | 132 | 81 | 70 | 4-∅10 | 11 | 25 | 185 | 145 | 8-M16 | 185 | 145 | 8-M16 |
| 80 | 46 | 142 | 90 | 70 | 4-∅10 | 14 | 25 | 200 | 160 | 8-M16 | 200 | 160 | 8-M16 |
| 100 | 52 | 158 | 105 | 70 | 4-∅10 | 14 | 28 | 220 | 180 | 8-M16 | 220 | 180 | 8-M16 |
| 125 | 56 | 172 | 122 | 70 | 4-∅10 | 14 | 28 | 250 | 210 | 8-M16 | 250 | 210 | 8-M16 |
| 150 | 56 | 190 | 136 | 102 | 4-∅12 | 17 | 28 | 285 | 240 | 8-M20 | 285 | 240 | 8-M20 |
| 200 | 60 | 225 | 168 | 102 | 4-∅12 | 17 | 35 | 340 | 295 | 8-M20 | 340 | 295 | 12-M20 |
| 250 | 68 | 258 | 202 | 125 | 4-∅14 | 22 | 40 | 395 | 350 | 12-M20 | 405 | 355 | 12-M24 |
| 300 | 78 | 293 | 236 | 140 | 4-∅18 | 27 | 40 | 445 | 400 | 12-M20 | 460 | 410 | 12-M24 |
| 350 | 78 | 335 | 263 | 140 | 4-∅18 | 27 | 40 | 505 | 460 | 16-M20 | 520 | 470 | 16-M24 |
| 400 | 102 | 365 | 303 | 140 | 4-∅18 | 27 | 50 | 565 | 515 | 16-M24 | 580 | 525 | 16-M27 |
| 450 | 114 | 422 | 327 | 165 | 4-∅22 | 32 | 50 | 615 | 565 | 20-M24 | 640 | 585 | 20-M27 |
| 500 | 127 | 453 | 366 | 165 | 4-∅22 | 32 | 60 | 670 | 620 | 20-M24 | 715 | 650 | 20-M30 |
| 600 | 154 | 531 | 426 | 254 | 8-∅18 | 40 | 70 | 780 | 725 | 20-M27 | 840 | 770 | 20-M33 |
A PTFE lined butterfly valve is a type of butterfly valve that uses a disc made of PTFE (polytetrafluoroethylene) to control the flow of fluid. PTFE is a type of plastic that is known for its chemical resistance, high temperature tolerance, and low friction properties. The PTFE lining is applied to the disc, which is attached to a stem that runs through the valve body. As the stem is rotated, the disc moves into and out of the flow path, allowing or blocking the flow of fluid.
The main advantage of a PTFE lined butterfly valve is that it offers excellent chemical resistance against a wide range of acids, alkalis, and other chemicals. This makes it suitable for use in applications where the fluid being transported is highly corrosive or toxic. PTFE lined butterfly valves are available in a wide range of sizes and pressure ratings, and can be made from materials such as carbon steel, stainless steel, and alloy steels.
They are also available in different designs, such as wafer, lug and double flange, and also with different types of actuators and accessories to meet specific requirements. PTFE lined butterfly valves are known for their tight shut-off and are available in both manual and actuated (pneumatic or electric) operation. They are suitable for use in a wide range of temperatures, making them ideal for a variety of industries such as chemical, petrochemical, pharmaceutical, and power generation. Furthermore, they are excellent for high-purity applications, as PTFE is highly resistant to contamination and does not release any toxic substances into the fluid.
What is a PTFE lined butterfly valve?
It is a type of butterfly valve utilizing a disc made of PTFE (polytetrafluoroethylene) to control fluid flow. PTFE is well-known for its exceptional chemical resistance, high-temperature tolerance, and low-friction properties.
What are the main advantages of this valve?
The primary advantage is its outstanding chemical resistance against a wide range of acids, alkalis, and other aggressive chemicals, making it ideal for highly corrosive or toxic fluid applications.
What is the working temperature range?
These PTFE lined butterfly valves are designed to operate efficiently within a broad working temperature range of -20℃ to 200℃.
Which industries commonly use these valves?
They are widely applied in the chemical industry, petrochemicals, pharmaceuticals, food processing, papermaking, and power generation due to their reliability and safety.
Are they suitable for high-purity applications?
Yes, PTFE is highly resistant to contamination and does not release toxic substances into the fluid, making these valves an excellent choice for high-purity requirements.
What operation types are available?
These valves provide tight shut-off and can be configured for both manual operation and actuated operation, including pneumatic or electric actuators.