Is the electric head of Ningbo electric long stem butterfly valve multi turn? Next, we will talk about the other functions of the manual device installed on the pneumatic switch ball valve in detail: the main function has been mentioned above, which is simply summarized as follows: when the signal is cut off, the air source is cut off, or other types of faults occur on the valve, the valve may not be automatically controlled, and the hand wheel is used instead, which can avoid some potential safety hazards or economic losses.
、 terms of settlement
1. Eliminate impurities and clean the valve cavity.
2. Adjust the limit screw of the worm gear or electric actuator to ensure the correct closing position of the valve.
3. Check the flange plane and bolt compression force, which should be evenly compressed,
4. Spinning in the direction of arrow
