Pneumatic PTFE Sealed Butterfly Valve Product Overview
The company's D671F pneumatic PTFE sealed butterfly valve consists of a PTFE sealed butterfly valve, a stainless steel valve plate, and a valve stem. The pneumatic PTFE sealed butterfly valve is suitable for working conditions with temperatures ≤150°C, weak corrosion, or certain cleanliness requirements. It is used in food, medicine, chemical, petroleum, electric power, papermaking, and other industries for regulating flow and cutting off media in water supply and drainage, as well as gas pipelines. The main features of the pneumatic PTFE sealed butterfly valve are:
1. Novel and reasonable design, simple structure, lightweight, and quick opening and closing.
2. Low operating torque, easy operation, labor-saving, and flexible.
3. Can be installed in any position, easy maintenance.
4. Seal can be replaced, with reliable sealing performance achieving bidirectional sealing and zero leakage.
5. Seal material is aging-resistant, corrosion-resistant, and has a long service life.
Pneumatic PTFE Sealed Butterfly Valve Design Standards
| Design Standard | GB/T2238-1989 |
|---|
| Flange Connection Dimensions | GB/T9113.1-2000; GB/T9115.1-2000; JB78 |
| Structure Length | GB/T12221-1989 |
| Pressure Test | GB/T13927-1992; JB/T9092-1999 |
Pneumatic PTFE Sealed Butterfly Valve Technical Parameters
| Nominal Diameter mm | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 800 | 900 | 1000 |
|---|
| Nominal Pressure MPa | 0.6, 1.0, 1.6 |
| Connection Method | Wafer Type |
| Action Range | 0～90° |
| Sealing Form | PTFE Seal |
| Actuator Model | GT, AT, AW Series Single and Double Acting Pneumatic Actuators |
| Air Supply Pressure | 0.4～0.7MPa |
| Air Source Interface | G1/4", G1/8", G3/8", G1/2" |
| Ambient Temperature | -30～+70℃ |
| Action Type | Single Acting Actuator, Double Acting Actuator |
| Optional Accessories | Positioner, Solenoid Valve, Air Filter Regulator, Lock Valve, Limit Switch, Valve Position Transmitter, Handwheel Mechanism, etc. |
Using the new series of pneumatic actuators, available in double-acting and single-acting (spring return) types, with gear and rack transmission, safe and reliable; large-diameter valves use the AW series pneumatic actuators with fork-type transmission, reasonable structure, high output torque, available in double-acting and single-acting types.
1. Gear-type double piston, high output torque, compact size.
2. Cylinder made of aluminum alloy, lightweight, and aesthetically pleasing.
3. Manual operation mechanism can be installed at the top or bottom.
4. Rack connection allows adjustment of opening angle and rated flow.
5. Actuator can be equipped with electric signal feedback indication and various accessories for automated operation.
6. ISO5211 standard connection facilitates installation and replacement of the product.
7. Adjustable screws at both ends allow a ±4° adjustable range for standard products at 0° and 90°, ensuring synchronization accuracy with the valve.
Pneumatic PTFE Sealed Butterfly Valve Parts Materials
| Part Name | Material |
|---|
| Valve Body | Ductile Cast Steel, Cast Steel, Alloy Steel, Stainless Steel |
| Butterfly Plate | Gray Cast Iron, Ductile Cast Steel, Cast Steel, Stainless Steel, and Special Materials |
| Seal Ring | Polytetrafluoroethylene, PTFE |
| Valve Stem | 2Cr13, Stainless Steel |
| Packing | O-Ring, Flexible Graphite O |
Pneumatic PTFE Sealed Butterfly Valve Performance Specifications
| Nominal Diameter | DN (mm) | 50～2000 |
|---|
| Nominal Pressure | PN (MPa) | 0.6 | 1.0 | 1.6 |
| Test Pressure | Strength Test | 0.9 | 1.5 | 2.4 |
| Seal Test | 0.66 | 1.1 | 1.76 |
| Air Seal Test | 0.6 | 0.6 | 0.6 |
| Applicable Media | Air, Water, Sewage, Steam, Gas, Oil, etc. |
| Drive Type | Manual, Worm Gear Drive, Pneumatic Drive, Electric Drive. |
Pneumatic PTFE Sealed Butterfly Valve Connection Dimensions Diagram
