Flow characteristics and selection principles of pneumatic diaphragm control valve Flow characteristics refer to the relationship between valve position opening and flow size, which directly affects the regulation quality and system stability, and is related to the adjusted parameters, equipment objects and process flow.

Precautions for initial operation When the electric butterfly valve is operated at the beginning, it must pass the air or water leakage test. Some media may remain on the contact surface of the valve during the test. If these media react with the working media, attention must be paid. That is to say, during the initial operation, the pipeline must be completely cleaned in the fully open state, so as not to contaminate the sealing surface to prevent damage to the sealing surface. As a reminder, the valve shall not be opened or closed during flushing.