Pneumatic Butterfly Damper for Sale
The pneumatic butterfly damper is an automated valve powered by compressed air, specifically used for regulating and cutting off the flow of media in the flue system. Its core consists of a butterfly valve and an air actuator, featuring a double or triple eccentric structure design. The butterfly plate rotates 0-90° to achieve rapid opening and closing (response time ≤ 0.5 seconds), and supports remote automated control (such as integration with DCS/PLC systems).
Main technical parameters
- Nominal Diameter: DN 40 to DN 1400 mm.
- Valve Body Material: gray cast iron, ductile iron, carbon steel, and stainless steel.
- Applicable Temperature: from -20℃ to 100℃.
- Rotation Angle: 90° ± 3°.
- Control Method: pneumatic, worm gear, electric, and electro-hydraulic linkage.
- Pneumatic Accessories: These include solenoid valves, air filters, positioners, and signal switches, which enhance the performance and control accuracy .
- Functional Purposes: It is mainly used for on/off control, proportional regulation, and emergency shut-off, making it suitable for a variety of industrial applications.
- Applicable Media: liquids, gases, and powders.
- Disc Material: QT 450, WCB, 304, and 316 L.
- Nominal Pressure: 0.1 MPa to 2.5 MPa
- Gallery
The design usually follows international standards such as ISO and API.
The size of the valve should be calculated and selected based on the pipe diameter, flow requirements and installation space.
The pneumatic control system should take into account factors such as air source pressure, control mode (switch or regulation), and response time.