What Is The Pneumatic Actuator PVC Butterfly Valve？
Pneumatic actuator PVC butterfly valves are specialized valves designed for precise fluid control in various industrial applications. These valves utilize a pneumatic actuator, which is powered by compressed air, to automate the opening and closing of the valve. Constructed with PVC (Polyvinyl Chloride) material, these valves offer excellent corrosion resistance and durability, making them suitable for use in a wide range of industries.
The butterfly valve design features a disc-shaped closure element that rotates around the valve shaft to control the flow of fluids. When paired with a pneumatic actuator, these valves offer efficient and reliable operation, allowing for quick response and precise control over fluid flow rates. Pneumatic actuator PVC butterfly valves are commonly used in water treatment plants, chemical processing facilities, HVAC systems, and other industrial applications where automated fluid control is required.
Data Sheet of Valve：
| Size Range | Body Material | Connection Type | Pressure Rating |
| DN50-DN500(2″ – 20″) | Plastic UPVC | Flange | 10bar |
| Structure Type | Sealing Material | Stem Material | Application Medium |
| Midline Structure A Type | NBR, EPDM | Plastic UPVC | Water, Air, Gas, And Other Medium |
Pneumatic PVC Butterfly Valves Features：
- Standard ISO square size for direct mounting of actuators Disc/seat with trapezoidal elastic lining provides hermetic seal;
- Bushing completely isolates the valve body from the process flow;
- Bushings are used as flange gaskets on both sides of the valve;
- Body cavity has special channels to prevent liner slippage and compression;
- EPDM, NBR, PTFE seal O-ring shaft seal;
Technical Parameters of Butterfly Valves：
Air source processor: The pneumatic triplet, a vital accessory for pneumatic valves, combines filtering, pressure reduction, and lubrication functions. The pressure reducing valve adjusts inlet pressure to a stable outlet pressure, utilizing the medium’s energy. In two-piece assemblies, it couples with a filter for compressed instrument air filtering. In three-piece configurations, it adds lubrication to the air, ensuring efficient operation.
Pneumatic solenoid valve: The pneumatic solenoid valve, also known as a directional control valve, is a vital component for regulating the opening and closing of pneumatic valves. It functions by magnetizing and demagnetizing, which directs the gas flow based on voltage signals. Commonly employed to manage gas source and circuit flow, these valves offer precise control over valve operations through voltage signals.
Limit switch: The valve limit switch, also called a travel switch, is a critical field instrument in automatic control systems. It detects the valve’s status and outputs signals for open or closed positions. This switch is essential for confirming and executing subsequent programs by programmers. Additionally, it serves as a vital component for valve interlock protection and remote alarm indication within the system. It effectively indicates and provides feedback on mechanical equipment’s movement limit position.
Valve positioner: The valve positioner is a crucial component of pneumatic control valves, enabling precise control over valve positioning. It utilizes the valve stem displacement signal as input feedback and the controller output signal as the control signal. By comparing these signals, any deviation triggers adjustments to the actuator output signal, ensuring a direct correspondence between valve stem displacement and controller output.
Manual device: The manual device is an essential component that complements the pneumatic actuator assembly. It serves to facilitate manual or pneumatic operation for butterfly valves and ball valves with a 90° opening. This mechanism is crucial for ensuring versatility and flexibility in valve operation, allowing for both manual and automated control as needed.
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