Pneumatic control valve is a high-precision automatic control valve driven by pneumatic actuator, widely used in petroleum, chemical, electric power, metallurgy, pharmaceutical and environmental protection and other working conditions. The valve is suitable for water, steam, gas, oil and various corrosive media, with excellent corrosion resistance and sealing performance. Pneumatic control valves drive the actuator through pneumatic pressure to achieve precise adjustment of the spool, control flow, pressure and temperature, fast response speed, stable control, suitable for complex automation control systems. The advantages of the product include compact structure, high adjustment precision, long life, easy maintenance, and a wide range of adaptability. Pneumatic control valves support a variety of control signal input, easy to integrate with DCS, PLC system to realize remote intelligent control. Its efficient and stable performance effectively improves the safety and automation level of industrial production process, and is an indispensable and important control equipment for modern industrial piping system.