In the field of industrial processing, people usually use pneumatic control valve control instrument, the control instrument can ensure the accuracy of production and processing, so the staff in their daily work will take the application of control instrument as one of the important content. Pneumatic control valve is the industry process control instrument, is also often used in the production of equipment, equipment at work can be powered by compressed gas, the working principle of equipment is simple, structure is very reasonable, so when using pneumatic adjustable valve installation is very convenient.

The air valve is installed at the high point of the pressure water tank of the pumping station and in each water supply line, which is used for filling water in the initial stage of the water delivery line and discharging air out of the water delivery line when filling water after regular maintenance of the pipeline to avoid pressure fluctuation; When the water hammer appears negative pressure in the water conveyance pipeline, the air valve opens to allow the air outside the pipeline to enter the pipeline, so as not to generate large negative pressure in the pipeline and play a protective role; During the operation of the piping system, when the air dissolved in water is released due to the change of pressure or temperature in the pipe, the air valve will discharge it timely to prevent the formation of air bags in the pipe and affect the operation of the piping system.