Our company's D671F pneumatic PTFE-sealed butterfly valve is composed of a PTFE-sealed butterfly valve and stainless steel valve plate and stem. The pneumatic PTFE-sealed butterfly valve is suitable for service conditions with temperatures ≤150°C, low corrosion, or specific cleanliness requirements, including food applications.Products, chemicals, petroleum, electricity, papermaking, etc., play a role in regulating flow and acting as a shutoff medium in water supply and drainage, gas pipelines. The main features of the pneumatic PTFE-sealed butterfly valve are:
1. Innovative, rational design with simple structure, lightweight, and quick opening and closing.
2. Low torque operation, easy to handle, and labor-saving with agility.
3. Can be installed at any location with easy maintenance.
4. Sealing components are replaceable, ensuring reliable sealing performance with zero leakage for both directions.
5. Features include aging and corrosion resistance, and long service life of the sealing materials.
Pneumatic PTFE Sealed Butterfly Valve - Design Standard
| Design Standards | GB/T2238-1989 |
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| Flange connection dimensions | GB/T9113.1-2000；GB/T9115.1-2000；JB78 |
| Structural Length | GB/T12221-1989 |
| Pressure Test | GB/T13927-1992；JB/T9092-1999 |
Pneumatic PTFE Sealed Butterfly Valve - Technical Specifications
| Nominal Bore Diameter mm | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 800 | 900 | 1000 |
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| Nominal Pressure MPa | 0.6、1.0、1.6 |
| Connection Method | Snap-on |
| Action Range | 0～90° |
| Sealing Type | PTFE seal |
| Actuator Model | GT, AT, AW Series Double-acting and Single-acting Pneumatic Actuators |
| Gas 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, hold-open 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 actuators using fork transmission, with rational structure and high output torque, available in both double-acting and single-acting versions.
1. Gear-type double piston, high output torque, compact size.
2. Cylinder made of aluminum alloy, featuring light weight and an aesthetically pleasing design.
3. Manual operation mechanisms can be installed at the top and bottom.
4. Ratchet-type connections allow for adjustable opening angles and rated flow rates.
5. Actuators are available with telegraphic 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 synchronized accuracy with the valve.
Pneumatic PTFE Sealed Butterfly Valve - Parts Material
| Part Name | Materials |
|---|
| Valve body | Ductile iron castings, cast steel, alloy steel, stainless steel |
| Butterfly plate | Gray Cast Iron, Ductile Iron, Cast Steel, Stainless Steel, and Special Materials |
| Seal ring | Polytetrafluoroethylene, PTFE |
| Valve Stem | 2Cr13, stainless steel |
| Filling Material | O-rings, Flexible Graphite O-rings |
Pneumatic PTFE Sealing Butterfly Valve - Performance Specifications
| Nominal Bore Size | DN（mm） | 50～2000 |
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| 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 |
| Sealability Test | 0.6 | 0.6 | 0.6 |
| Applicable Medium | Air, water, wastewater, steam, gas, oil products, etc. |
| Drive Type | Manual, worm gear drive, pneumatic transmission, electric transmission. |
Pneumatic PTFE Sealed Butterfly Valve - Connection Size Diagram
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| D671F Pneumatic PTFE Sealed Butterfly Valve (with Manual Device) | D671F Pneumatic PTFE Sealed Butterfly Valve (Standard Type) |
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Pneumatic PTFE Sealed Butterfly Valve - Connection Size
| Nominal Bore Size | Structure
Length | Dimensions (Reference Values) | Connection Size (Standard Value) |
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| 0.6MPa | 1.0MPa | 1.6MPa |
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| millimeters | inches | L | H | H1 | A | D | D1 | n-d | D | D1 | n-d | D | D1 | n-d |
| 50 | 2 | 43 | 63 | 315 | 180 | 140 | 110 | 4-14 | 165 | 125 | 4-18 | 165 | 125 | 4-18 |
| 65 | 21/2 | 46 | 70 | 330 | 180 | 160 | 130 | 4-14 | 185 | 145 | 4-18 | 185 | 145 | 4-18 |
| 80 | 3 | 46 | 83 | 390 | 245 | 190 | 150 | 4-18 | 200 | 160 | 8-18 | 200 | 160 | 8-18 |
| 100 | 4 | 52 | 105 | 431 | 240 | 210 | 170 | 4-18 | 220 | 180 | 8-18 | 220 | 180 | 8-18 |
| 125 | 5 | 56 | 115 | 455 | 240 | 240 | 200 | 8-18 | 250 | 210 | 8-18 | 250 | 210 | 8-18 |
| 150 | 6 | 56 | 137 | 626 | 350 | 265 | 225 | 8-18 | 285 | 240 | 8-22 | 285 | 240 | 8-22 |
| 200 | 8 | 60 | 164 | 720 | 350 | 320 | 280 | 8-18 | 340 | 295 | 8-22 | 340 | 295 | 12-22 |
| 250 | 10 | 68 | 206 | 800 | 550 | 375 | 335 | 12-18 | 395 | 350 | 12-22 | 405 | 355 | 12-26 |
| 300 | 12 | 78 | 230 | 860 | 600 | 440 | 395 | 12-22 | 445 | 400 | 12-22 | 460 | 410 | 12-26 |
| 350 | 14 | 78 | 248 | 883 | 600 | 490 | 445 | 12-22 | 505 | 460 | 16-22 | 520 | 470 | 16-26 |
| 400 | 16 | 102 | 289 | 972 | 600 | 540 | 495 | 16-22 | 565 | 515 | 16-26 | 580 | 525 | 16-30 |
| 450 | 18 | 114 | 320 | 1043 | 750 | 595 | 550 | 16-22 | 615 | 565 | 20-26 | 640 | 585 | 20-30 |
| 500 | 20 | 127 | 343 | 1098 | 750 | 645 | 600 | 20-22 | 670 | 620 | 20-26 | 715 | 650 | 20-33 |
| 600 | 24 | 154 | 413 | 1236 | 750 | 755 | 705 | 20-26 | 780 | 725 | 20-30 | 840 | 770 | 20-36 |
| 700 | 28 | 165 | 478 | 1431 | 750 | 860 | 810 | 24-26 | 895 | 840 | 24-30 | 910 | 840 | 24-36 |
| 800 | 32 | 190 | 525 | 1488 | 750 | 975 | 920 | 24-30 | 1015 | 950 | 24-33 | 1025 | 950 | 24-39 |
| 900 | 36 | 203 | 620 | 1615 | 1250 | 1075 | 1020 | 24-30 | 1115 | 1050 | 28-33 | 1125 | 1050 | 28-39 |
| 1000 | 40 | 216 | 725 | 1765 | 1500 | 1175 | 1120 | 28-30 | 1230 | 1160 | 28-36 | 1255 | 1170 | 28-42 |
| 1200 | 48 | 254 | 780 | 1976 | 1500 | 1405 | 1340 | 32-33 | 1455 | 1380 | 32-39 | 1485 | 1390 | 32-48 |
Pneumatic PTFE Sealed Butterfly Valve - Product Selection
(1) Valve Body Parameters: Nominal Bore Size, Working Pressure, Process Medium, Application, Valve Body Material, and other related series parameters.
(2) Actuator Parameters: Actuator Type, Control Method, Control Signal (4-20mA, 1-5V), Operation Mode (Air-Open, Air-Shut)
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 strive to provide you with excellent service!
Related Names: D671F Pneumatic PTFE Seated Butterfly Valve, Pneumatic Soft Seated Butterfly Valve, Pneumatic Semi-Lined PTFE Butterfly Valve
