Our D671F46 pneumatic fluorinated polytetrafluoroethylene-lined butterfly valve features a butterfly plate lined with polytetrafluoroethylene (PTFE) having a spherical sealing surface. The pneumatic fluorinated butterfly valve is easy to operate, boasts tight sealing performance, and has an exceptionally long service life; it can be used for quick cut-off or flow regulation. The pneumatic fluorinated butterfly valve is suitable for applications requiring reliable sealing and excellent regulating characteristics. The valve body is designed in a split-type, with the sealing at both ends of the valve shaft controlled by the rotating base surface between the butterfly plate and the valve seat, utilizing fluororubber; this ensures that the valve shaft does not come into contact with the fluid medium inside the valve. The pneumatic fluorinated butterfly valve is widely used in various types of industrial pipelines for the transportation of liquids and gases (including steam), including in environments with severely corrosive media such as sulfuric acid, hydrofluoric acid, phosphoric acid, chlorine gas, strong alkalis, and aqua regia, which are highly corrosive.
Fully lined butterfly valves with PTFE (F4), PTFE (F3), and F46 PTFE, offering corrosion resistance, no leakage, and long service life. The lined PTFE pneumatic butterfly valves are suitable for concentrated sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid, aqua regia, various organic acids, strong acids, oxidizing media, as well as high-temperature oleum, high-temperature concentrated acetic acid, alternating acid and alkali, and a variety of organic solvents and other highly corrosive media.
Small and portable, easy to disassemble and maintain, and can be installed at any location.
(2) Simple and compact structure, with a quick 90° rotation for easy opening. 3
(3) Low operating torque for ease and agility.
(4) Flow characteristics approach a straight line, with good regulating performance.
(5) Seal materials are resistant to aging and corrosion, and can be used with a variety of mediums.
AFLUORINE LINER PNEUMATIC Butterfly Valve - Technical Parameters
| Nominal Diameter DN (mm) | 50～1600 |
|---|
| Nominal Pressure PN (MPa) | 0.6 | 1.0 | 1.6 |
| Sealing Test (MPa) | 0.66 | 1.1 | 1.76 |
| Tensile Test (MPa) | 0.9 | 1.5 | 2.4 |
| Suitable Temperature | Fluororubber: -20℃ to 200℃ |
| Applicable Medium | Water, air, natural gas, oil products, and weakly corrosive fluids |
| Leakage Rate | Meets GB/T 13927-92 standard |
| Drive Method | Pneumatic |
| Configuration Actuator | GT, AT, AW Series Single and Double Acting Pneumatic Actuators |
| Control Method | Two-position switch control, 4-20mA analog signal control |
Pneumatic Fluorine-lined Butterfly Valve, Actuator Parameters
| Actuator Model | GT, AT, AW Series Double-acting and Single-acting Pneumatic Actuators |
|---|
| Supply Pressure | 0.4～0.7MPa |
| Gas Source Interface | G1/4"、G1/8"、G3/8"、G1/2" |
| Ambient Temperature | -30～+70℃ |
| Function form | Single-acting actuator, double-acting actuator |
| Available accessories | Locators, solenoid valves, air filter regulators, holding valves, limit switches, position transmitters, handwheels, etc. |
Utilizing advanced series pneumatic actuators, featuring double-acting and single-acting (spring return) types, with gear rack transmission for safety and reliability; large bore valves are equipped with series AW type pneumatic actuator yoke drive, featuring rational structure and high output torque, available in both double-acting and single-acting versions.
1. Gear-type double piston, with high output torque and compact size.
2. Cylinders are made of aluminum alloy, offering lightweight and aesthetically pleasing design.
3. Manual operation mechanisms can be installed at the top and bottom.
4. Rack and pinion connection for adjustable opening angle and rated flow rate.
5. Actuators are available with electrical signal feedback indication and various accessories for automated operation.
6. The IS05211 standard connection facilitates the installation and replacement of the product.
7. The adjustable screws at both ends allow the standard product to have a ±4° adjustable range at 0° and 90°, ensuring synchronization accuracy with the valve.
Fluorine-lined Pneumatic Butterfly Valve Parts Material
| Part Name | Materials |
|---|
| Valve body | (Ductile Iron, Cast Iron, Stainless Steel) + F46 |
| Butterfly Plate | Gray Cast Iron, Ductile Iron, Cast Steel, Stainless Steel, and Special Materials + F46 |
| Valve stem | 2Cr13, stainless steel |
| Filling Material | O-rings, flexible graphite |
Pneumatic Fluorine-lined Butterfly Valve - Performance Specifications
| Nominal Bore Size | DN（mm） | 50～1600 |
|---|
| Nominal Pressure | PN（MPa） | 0.6 | 1.0 | 1.6 |
| Test Pressure | Tensile Test | 0.9 | 1.5 | 2.4 |
| Seal Test | 0.66 | 1.1 | 1.76 |
| Seal Integrity Test | 0.6 | 0.6 | 0.6 |
| Applicable Medium | Corrosive media of various types |
Fluorine-lined Pneumatic Butterfly Valve - Connection Size Diagram
 |  |
|---|
| D641F46 Pneumatic Fluorine-lined Butterfly Valve (Flanged Connection) | D671F46 Pneumatic Fluorine-lined Butterfly Valve (Wafer Type) |
|---|
Fluorine-lined Pneumatic Butterfly Valve - Connection Dimensions
| Nominal Diameter (DN) | Main Dimensions | Flange Size |
|---|
| L | L1 | H | H1 | A | 1.0MPa | 1.6MPa |
|---|
| D | D1 | n-Фd | D | D1 | n-Фd |
|---|
| 50 | 108 | 43 | 63 | 315 | 180 | 165 | 125 | 4-18 | 165 | 125 | 4-18 |
| 65 | 112 | 46 | 70 | 330 | 180 | 185 | 145 | 4-18 | 185 | 145 | 4-18 |
| 80 | 114 | 46 | 83 | 390 | 245 | 200 | 160 | 4-18 | 200 | 160 | 8-18 |
| 100 | 127 | 52 | 105 | 431 | 240 | 220 | 180 | 8-18 | 220 | 180 | 8-18 |
| 125 | 140 | 56 | 115 | 455 | 240 | 250 | 210 | 8-18 | 250 | 210 | 8-18 |
| 150 | 140 | 56 | 137 | 626 | 350 | 285 | 240 | 8-22 | 285 | 240 | 8-22 |
| 200 | 152 | 60 | 164 | 720 | 350 | 340 | 295 | 8-22 | 340 | 295 | 12-22 |
| 250 | 165 | 68 | 206 | 800 | 550 | 395 | 350 | 12-22 | 405 | 355 | 12-26 |
| 300 | 178 | 78 | 230 | 860 | 600 | 445 | 400 | 12-22 | 460 | 410 | 12-26 |
| 350 | 190 | 78 | 248 | 883 | 600 | 505 | 460 | 16-22 | 520 | 470 | 12-26 |
| 400 | 216 | 102 | 289 | 972 | 600 | 565 | 515 | 16-26 | 580 | 525 | 16-26 |
| 450 | 222 | 114 | 320 | 1043 | 750 | 615 | 565 | 20-26 | 640 | 585 | 16-30 |
| 500 | 229 | 127 | 342 | 1098 | 750 | 670 | 620 | 20-26 | 715 | 650 | 20-30 |
| 600 | 267 | 154 | 413 | 1236 | 750 | 780 | 725 | 20-30 | 840 | 770 | 20-33 |
| 700 | 430 | 165 | 478 | 1431 | 750 | 895 | 840 | 24-30 | 910 | 840 | 24-36 |
| 800 | 470 | 190 | 525 | 1488 | 750 | 1015 | 950 | 24-33 | 1025 | 950 | 24-39 |
| 900 | 510 | 203 | 585 | 1615 | 1250 | 1115 | 1050 | 28-33 | 1125 | 1050 | 28-39 |
| 1000 | 550 | 216 | 640 | 1765 | 1500 | 1230 | 1160 | 28-36 | 1255 | 1170 | 28-42 |
| 1200 | 630 | 254 | 755 | 1976 | 1500 | 1455 | 1380 | 32-39 | 1485 | 1390 | 32-48 |
Fluorine-lined Pneumatic Butterfly Valve - Product Selection
(1) Valve Body Parameters: Nominal Diameter, Operating Pressure, Process Medium, Application, Valve Body Material, and other series parameters.
(2) Actuator Parameters: Actuator Type, Control Method, Control Signal (4-20mA, 1-5V), Operating Mode (Air-Open, Air-Close)
Please provide as much detail as possible on the above technical specifications to facilitate our production and technical staff in accurately selecting the right products for you. If you have any questions, feel free to call us, and we will certainly do our best to provide you with excellent service!
Relative Names: D671F46 Pneumatic Fluorine-lined Butterfly Valve, Pneumatic Tetrafluoroethylene-lined Butterfly Valve, Acid and Alkali-resistant Pneumatic Butterfly Valve
