The pneumatic control valve is powered by compressed gas and uses a cylinder as an actuator. It drives the valve to achieve on-off or proportional control with the help of accessories such as valve positioners, converters, solenoid valves, hold valves, air storage tanks, and gas filters. It receives control signals from industrial automation control systems to regulate various process parameters of pipeline media: flow rate, pressure, temperature, liquid level, etc. The characteristics of pneumatic control valves are simple control, fast response time and inherent safety without the need for additional explosion-proof measures.