Pneumatic Butterfly Valvess

A pneumatic butterfly valve consists of a circular disc mounted on a central shaft, which rotates to open, close, or modulate fluid flow. The pneumatic actuator uses compressed air to generate rotary motion, allowing automated operation without manual intervention. These valves are widely used in water treatment, chemical processing, HVAC systems, food and beverage, and other industrial applications due to their compact design, fast response, and cost-effectiveness 

• Pneumatic Actuator: Converts air pressure into rotational torque to move the valve 
• Valve Disc: The flow control element that rotates to regulate or block fluid flow 
• Valve Stem/Shaft: Connects the actuator to the disc, transmitting motion.
• Valve Body: Houses the disc and connects to the pipeline, designed to withstand system pressure.
• Seals and Packing: Prevent leakage along the shaft and ensure tight shutoff.
• Air Ports and Solenoid Interface: Control the direction and timing of actuator movement unionvalve.c

• Single-Acting (Spring Return): Uses one air chamber and a spring to return the valve to a fail-safe position (open or closed) if air supply fails. Ideal for emergency shutdowns and safety-critical systems 
  Double-Acting: Uses two air chambers to control opening and closing. Provides higher torque, faster response, and is suitable for frequent cycling or high-pressure application

• Wafer and Lug Style: Lightweight, cost-effective, and easy to install between flanges.
• Double Offset (High-Performance): Reduces friction between disc and seat, suitable for higher pressure and temperature.
• Triple Offset: Provides bubble-tight sealing for high-temperature or corrosive applications