1. The opening and closing direction of pneumatic valve should be closed clockwise.

2. Since the pneumatic valves in the pipe network are often opened and closed manually, the number of turns of opening and closing should not be too much. Even large diameter valves should be within 200-600 revolutions.

3. In order to facilitate the opening and closing operation of one person, the maximum opening and closing torque should be 240n-m under the pipe working pressure condition.

4. The opening and closing operating end of the pneumatic valve shall be square tenon with standardized size and facing the ground so that people can operate directly from the ground. Valve with disc is not suitable for underground pipe network.

When using pneumatic valve diaphragm, attention should be paid to the enrichment of the contact place, and the working time should not be too long, so as to avoid excessive damage to the device and cause you losses. As the working environment of the pneumatic valve diaphragm is high temperature, do not use it in the environment with large difference between high and low temperature when using, so as to avoid unnecessary damage to the device.