Product Introduction: Pneumatic control valves use compressed gas as the power source, cylinders as actuators, and accessories such as valve positioners, converters, solenoid valves, holding valves, gas storage tanks, and gas filters to drive the valves, achieving on/off or proportional regulation. They receive control signals from industrial automation control systems to adjust various process parameters such as flow rate, pressure, temperature, and liquid level of pipeline media. The characteristics of pneumatic control valves are simple control, fast response, and inherent safety, without the need for additional explosion-proof measures. It is one of the industrial process control instruments widely used in petroleum, chemical, power, metallurgical and other industrial enterprises. Suitable for gas, steam, water, and other non corrosive liquid working conditions.

working principle

Pneumatic actuators receive compressed air or electrical signals to drive, and convert the input signal into mechanical action through thin film/piston components, driving the valve stem and valve core to move, thereby changing the flow area between the valve seat and valve core. The locator achieves precise positioning through feedback signals, ensuring that the valve remains stable at the set opening.

core structure

Pressure balancing valve core: adopts a pressure balancing structure, which balances the medium pressure and spring force to reduce the demand for operating force.

S-shaped streamline channel: optimizes fluid flow path, reduces turbulence with guide vanes, and achieves low noise and low pressure drop.

Symmetrical small hole design: The small hole structure on the sleeve adapts to gas throttling expansion, further reducing pressure fluctuations. ‌