After the above analysis, we must take all factors into consideration when purchasing pneumatic butterfly valves to ensure that they can adapt to practical applications. Relevant information What role can the pneumatic switch ball valve play in the work? Reasons why pneumatic on-off ball valve is popular with consumers; analyze the faults caused by oil distribution to the pneumatic control valve; analyze what problems the pneumatic butterfly valve will have in application and use

common problem:
1. The opening degree of pneumatic butterfly valve is related to the total flow, and most of them show linear proportion change. If it is used to control the total flow, its total flow characteristics are also closely related to the fluid density of the pipeline. For example, the specifications and methods of the two pipeline construction gate valves are the same, but the pipeline damage index is different, the total flow of the gate valve will also be quite different.
2. If the gate valve is in the condition of high throttle force, cavitation is very easy to occur on the reverse side of the valve body, which may damage the gate valve. Usually, the gate valve is applied outside 15 °.
3. When the pneumatic butterfly valve is in the middle opening degree, the opening shape produced by the development of the oil passage plate and the front end of the butterfly plate takes the valve shaft as the management center, and different situations occur on both sides. The development of the front end of the butterfly plate on one side moves in the direction of water flow, and the other side moves in the direction of reverse water flow. Therefore, one side of the oil passage plate and the valve body produce a nozzle like opening, and the other side is similar to the orifice opening of the throttle valve, The water flow at the nozzle side is much faster than that at the throttle valve side, and the air pressure will be caused under the gate valve at the throttle valve side, so the rubber products will fall down.
4. The actual operating torque of the pneumatic butterfly valve is different due to the difference in the opening degree and gate valve opening and closing fields. The vertical pneumatic butterfly valve is very large size valve, and the torque caused by the difference in water level, valve shaft and drain head cannot be ignored. On the other hand, when the equipment at the inlet side of the gate valve bends, bias flow will occur and the torque will increase. When the gate valve is in the middle opening, the actual operation organization must be locked because the hydrodynamic torque works.