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Professional Supplier Of Double-Acting Pneumatic Butterfly Valves
ZZJG VALVE, a world-renowned butterfly valve manufacturer, offers four actuation options: manual, electric, hydraulic, and pneumatic. Most pneumatic butterfly valve users choose double-acting pneumatic butterfly valves, so this section provides a detailed introduction to double-acting pneumatic butterfly valves.
Double acting pneumatic butterfly valves utilize a bidirectional air source to achieve precise opening and closing. Their structure includes key components such as the valve body, pneumatic actuator, and valve core. Compressed air propels a piston in reciprocating motion, directly controlling the flow of fluid. These valves are particularly suitable for high-pressure, high-temperature, or corrosive environments requiring fast response.
Double acting pneumatic VS single acting pneumatic
Unlike single acting valves, double-acting designs require no spring return and instead rely on positive and negative air pressure to independently control the opening and closing states. The double acting pneumatic butterfly valve is a pneumatic butterfly valve with a "driving mode" - both directions are driven by air pressure and there is no automatic reset capability. This is the core difference between it and the single acting pneumatic butterfly valve (driven by air pressure + spring).
These valves are widely used in the chemical, petroleum, and water treatment industries. For example, in powder conveying systems, their ceramic seals withstand highly abrasive media, and their dual-disc structure ensures zero leakage. The piston-driven actuator delivers over 40% greater thrust than diaphragm valves and can withstand a pressure differential of 6.4 MPa. Combined with an intelligent positioner, they can achieve flow regulation with an accuracy of ±0.5%. Special features such as an extended stem and bellows seal ensure stable performance in extreme temperatures ranging from -196°C to 650°C.
The advantages of double-acting pneumatic valves include:
1. Fast response (opening and closing time ≤ 2 seconds), suitable for emergency shutoff.
2. High reliability, with a maintenance-free period of over 3 years.
3. Safety redundancy design ensures valve position retention or automatic reset in the event of air loss.
Whether operating under routine conditions or conveying high-value media, these valves ensure production efficiency and safety through precise control.
Berikutnya: Five Main Types Of Butterfly Valve End Connection Types
