Pneumatic ball valve is a ball valve equipped with pneumatic actuators. Pneumatic actuators are relatively fast execution speed, quick on/off speed of 0.05 seconds/time, so it is usually called pneumatic quick cut off ball valve. Pneumatic ball valves are usually with various accessories, such as solenoid valve, air source treatment sanlian pieces, limit switch, locator, control box, etc., in order to realize the local control and remote centralized control, in the control room can control the switch of the valve, do not need to run to the field or high altitude and dangerous manual control, to a great extent, save the human resources and time and safety.