Maintenance of flange type pneumatic ball valve and how does the gas for maintenance come from? According to the hydrodynamics theory, the flow performance of the orifice of the pneumatic ball valve:
1. Air density;
2. Air quality passing through the orifice of pneumatic ball valve;
3. Orifice area of pneumatic ball valve;
4. Flow coefficient of orifice of pneumatic ball valve;
5. The change of pressure between the additional air chamber and the pneumatic ball valve body.
