Which electric actuator should be selected for Ningbo electric quick opening butterfly valve wafer type? The inspection of valve body is also the key point of the inspection of pneumatic butterfly valve. The main inspection is to check whether the appearance of the main body is kept in a new state and whether there is gas leakage in the flange installed on the main body. If there is more time, the sealing condition of the valve body can be further checked and whether there is large wear loss on the surface. Finally, the condition of the valve surface needs to be checked, Check whether the valve plate operates flexibly,
、 Performance test of pneumatic ball valve
1. When a certain standard of pneumatic ball valve is produced in batches, an authoritative organization shall be entrusted to test the following functions:
① Opening and closing torque of valve under working pressure;
② Under the working pressure, the number of consecutive opening and closing times that can ensure the close closure of the valve;
③ Detection of flow resistance coefficient of valve under pipeline water delivery condition.
