1. Preparation before installation of pneumatic ball valve
(1) The front and rear pipelines of the pneumatic ball valve are ready. The front and rear pipes shall be coaxial, and the sealing surfaces of the two flanges shall be parallel. The pipeline shall be able to bear the weight of pneumatic ball valve, otherwise the pipeline r must be equipped with proper support.
(2) Purge the pipelines in front of and behind the valve to remove the oil stain, welding slag and all other impurities in the pipeline.
(3) Check the mark of the pneumatic ball valve and make sure that the ball valve is intact. Calculate the opening and closing times of the valve barrier and verify that it works normally.
(4) Remove the protective part on the connecting flange at one end of the left pneumatic ball valve.
(5) Check the valve hole, remove the possible dirt, and then clean the hole. Even if there are only small particles between the valve seat and the ball, the sealing surface of the valve may be damaged.

1. Protective facilities of check valve:
In order to prevent leakage of the check valve or backflow of media after failure, resulting in product quality degradation, accidents and other adverse consequences, one or two shut-off valves are set in front of and behind the check valve. If two shut-off valves are set, the check valve can be easily disassembled for maintenance.