China Suppliers: Fully Lined PTFE Wafer Butterfly Valve Factory for Pharmaceutical and Corrosive Applications
Product Features
PTFE can be applied to highly corrosive chemical media.
It adopts a split design, making disassembly and replacement of parts more convenient.
The upper and lower cover design effectively prevents leakage.
The product has a wide range of applications: chemical industry, pharmaceuticals, food, papermaking, etc.
| Pressure test | PN10 | PN16 | |
|---|---|---|---|
| Shell | 15bar | 24bar | |
| Seal | Water | 11bar | 17.6bar |
| Air | 6bar | 6bar | |
Working Temperature: -20~200℃
Material for Main Parts
| 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 |
Dimension (mm)
| DN | L | A | B | ∅F | n-∅d1 | S | H | PN10 | PN16 | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ∅D | ∅D1 | N-∅d | ∅D | ∅D1 | N-∅d | ||||||||
| 50 | 43 | 122 | 71 | 70 | 4-∅10 | 11 | 25 | 165 | 125 | 4-18 | 165 | 125 | 4-18 |
| 65 | 46 | 132 | 81 | 70 | 4-∅10 | 11 | 25 | 185 | 145 | 8-18 | 185 | 145 | 8-18 |
| 80 | 46 | 142 | 90 | 70 | 4-∅10 | 14 | 25 | 200 | 160 | 8-18 | 200 | 160 | 8-18 |
| 100 | 52 | 158 | 105 | 70 | 4-∅10 | 14 | 28 | 220 | 180 | 8-18 | 220 | 180 | 8-18 |
| 125 | 56 | 172 | 122 | 70 | 4-∅10 | 14 | 28 | 250 | 210 | 8-18 | 250 | 210 | 8-18 |
| 150 | 56 | 190 | 136 | 102 | 4-∅12 | 17 | 28 | 285 | 240 | 8-22 | 285 | 240 | 8-22 |
| 200 | 60 | 225 | 168 | 102 | 4-∅12 | 17 | 35 | 340 | 295 | 8-22 | 340 | 295 | 12-22 |
| 250 | 68 | 258 | 202 | 125 | 4-∅14 | 22 | 40 | 395 | 350 | 12-22 | 405 | 355 | 12-26 |
| 300 | 78 | 293 | 236 | 140 | 4-∅18 | 27 | 40 | 445 | 400 | 12-22 | 460 | 410 | 12-26 |
| 350 | 78 | 335 | 263 | 140 | 4-∅18 | 27 | 40 | 505 | 460 | 16-22 | 520 | 470 | 16-26 |
| 400 | 102 | 365 | 303 | 140 | 4-∅18 | 27 | 50 | 565 | 515 | 16-26 | 580 | 525 | 16-30 |
| 450 | 114 | 422 | 327 | 165 | 4-∅22 | 32 | 50 | 615 | 565 | 20-26 | 640 | 585 | 20-30 |
| 500 | 127 | 453 | 366 | 165 | 4-∅22 | 32 | 60 | 670 | 620 | 20-26 | 715 | 650 | 20-33 |
| 600 | 154 | 531 | 426 | 254 | 8-∅18 | 40 | 70 | 780 | 725 | 20-30 | 840 | 770 | 20-36 |
Overview
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 its tight shut off and are available in both manual and actuated (pneumatic or electric) operation. They are also suitable for use in a wide range of temperatures, making them suitable for use in a variety of industries such as chemical, petrochemical, pharmaceutical, and power generation. They are also suitable for use in high-purity applications, as PTFE is highly resistant to contamination and does not release any toxic substances into the fluid.
Frequently Asked Questions
What is a PTFE lined butterfly valve?
A PTFE lined butterfly valve uses a disc lined with PTFE (polytetrafluoroethylene) to control fluid flow. It is highly valued for its chemical resistance, high-temperature tolerance, and low-friction properties.
What are the main advantages of using a PTFE lining?
The primary advantage is its excellent chemical resistance against a wide range of acids, alkalis, and other corrosive or toxic chemicals. It also prevents contamination, making it ideal for high-purity applications.
What industries commonly use this type of valve?
Due to its robust resistance and wide application range, it is widely used in the chemical industry, petrochemicals, pharmaceuticals, food processing, papermaking, and power generation.
What is the working temperature range for this valve?
The standard working temperature for this PTFE lined butterfly valve ranges from -20℃ to 200℃.
How can this valve be operated?
These valves are versatile and can be operated manually or equipped with automated actuators, including pneumatic or electric options, to meet specific system requirements.
What designs and materials are available for the valve body?
They are available in various designs such as wafer, lug, and double flange. The body can be constructed from materials like ductile iron (DI), carbon steel, stainless steel, and alloy steels depending on the application.