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Pneumatic butterfly valve Also known as pneumatic butterfly valve, is a type of industrial valve that uses compressed air to automatically open and close and control the flow of fluids (gas, liquid) in the pipeline system. It has a simple structure with a butterfly-shaped valve disc, controlled by a pneumatic controller.
Highlights:
Simple concentric design – easy to install: Shaft center, body center and seal ring center are coaxial to reduce vibration and increase service life.
Fast opening/closing – low pressure loss: The disc rotates 90° to perform full opening/closing operation.
Effective sealing: Soft seat made of EPDM, PTFE, NBR or Viton provides maximum leak protection.
Suitable for many environments: Clean water, wastewater, gas, steam at medium and low pressure.
Reasonable cost – high durability: Optimal choice for industrial, civil and water treatment systems.
| Parameter | Typical value |
|---|---|
| Size (DN) | DN50 – DN1200 |
| Working pressure | PN10 / PN16 |
| Working temperature | -10°C to 120°C (depending on seat type) |
| Body material | Ductile iron (GGG40), stainless steel 304/316, aluminum, plastic |
| Valve disc | Stainless steel 304/316, galvanized cast iron, aluminum, engineering plastic |
| Sealing seat | EPDM, NBR, PTFE, Viton |
| Control type | Lever, crank, electric/pneumatic drive |
| Connect | Wafer, Lug or Flanged Type |
| Protection level | IP65 – IP68 (with automatic transmission) |
