The pneumatic ball valve of the filling machine is usually formed by the pneumatic actuator, valve, positioner and other connecting devices after debugging. The actuator is the thrust component of the conditioning valve, which generates the corresponding thrust according to the size of the control signal pressure to promote the action of the conditioning organization. The valve body is the conditioning part of the pneumatic conditioning valve. It directly touches the conditioning medium to regulate the flow of the fluid. 　

For fluid with substances easy to adhere, deposit and scale, the flow rate shall not be less than 2m/s, and * * shall be increased to 3~4m/s or above to play the role of self-cleaning and preventing adhesion and deposition. For slurry and other highly abrasive fluids, the common flow rate should be less than 2~3m/s to reduce the wear of lining and electrode. When measuring the low conductivity liquid close to the threshold value, select a lower flow rate (less than 0.5~1m/s) as far as possible. As the flow rate increases, the flow noise will increase, resulting in output shaking.