How to change pneumatic sanitary flange butterfly valve 6 into electric valve? 3、 The following considerations can be taken when purchasing butterfly valves:
1 Valve core shape and structure; It is mainly considered according to the selected flow characteristics, unbalanced force and other factors.
2 Wear resistance; When the fluid medium is a suspension containing high concentration of abrasive particles, the internal material of the valve should be hard.
3 Corrosion resistance; As the medium is corrosive, try to select valves with simple structure.
4 Temperature and pressure of medium; When the temperature and pressure of the medium are high and vary greatly, the valve core and valve seat materials shall be selected with small changes in temperature and pressure.
5 Prevent flashing and cavitation; Flash evaporation and cavitation only occur in liquid medium. In the actual production process, flashing and cavitation will generate vibration and noise, which will shorten the service life of the valve. Therefore, flashing and cavitation of the valve should be prevented when selecting the valve.
、 Have you ever encountered the situation that the electric butterfly valve can not be closed? It is very simple. Use the elimination method to solve the problem. On the one hand, you did not carry out daily inspection on the device, and on the other hand, it also shows that you are not familiar with the device. Let's listen to the urination in detail.
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