The pneumatic ball valve of the filling machine has the characteristics of small unbalanced force, good dynamic stability, small pressure drop loss, high adjustment accuracy, low noise, air defense, etc. Compared with P series straight through single seat regulating valve, it can accept higher differential pressure, and has a wider use temperature scale than G series cage type single seat regulating valve. Pneumatic and electric actuators can be used according to the requirements of working conditions. The whole machine is stable, flexible, adjustable, and easy to protect. It can be used to control fluids under different working conditions and get used to various severe working conditions. It is widely used in petroleum, chemical industry, electric power, textile, paper making and other professions, especially in the operation occasions where the pressure difference before and after the valve is large and the leakage requirement is not very high.

1. Before the installation of the pneumatic butterfly valve, confirm whether the product performance and the arrow of the medium flow direction are consistent with the moving conditions, and insert and clean the inner cavity of the valve. It is not allowed to have foreign matters attached to the sealing ring and butterfly plate. It is not allowed to close the butterfly plate before cleaning to avoid damaging the sealing ring.