The pneumatic regulating butterfly valve has the smallest operating torque among all valves. It can be opened and closed quickly, powered by compressed air, through the mechanical transmission valve rod of the piston rack and gear, and rotate the valve plate 0~90o with the torque output from the angular stroke. It has simple structure, small volume, light weight, small flow resistance, large flow coefficient, and good sealing performance. Large adjustment range. It is the execution unit of instruments in the automatic control system;

Maintenance of transmission parts
In the process of opening and closing the valve, the original lubricating grease will continue to run off. In addition, temperature, corrosion and other factors will also make the lubricating oil constantly dry up. Therefore, the transmission part of the valve should be checked frequently. In case of lack of oil, it should be replenished in time to prevent increased wear due to lack of lubricant, resulting in inflexible transmission or cartridge failure.