Pneumatic O-type floating ball valve is a specially designed and carefully manufactured product based on the introduction of foreign advanced technology. With electric valve positioner, solenoid valve, limit switch, air filter pressure reducing valve, it can control the operation and realize the adjustment of parameters such as pressure, flow, temperature, and liquid level. It uses compressed air as the power, and the valve rod drives the valve core to rotate 90 ° in the valve body, which can realize the fully open-closed action. This product is divided into metal seal and soft seal according to its sealing performance. It has the characteristics of compact structure, small size, reliable operation, good sealing, easy maintenance, convenient installation and strong adaptability. It is especially suitable for occasions where the medium is viscous, particle-containing, and fibrous. It can be widely used in petroleum, chemical industry, teaching equipment, light industry, high pressure equipment, pharmaceutical, paper making and other industrial automatic control systems for remote centralized control or local control.