First of all, you should know the whole market before you buy electric butterfly valves. Different industries will have different market conditions in different periods of time. When you really understand the current market conditions, you can complete the whole thing more smoothly. This is the most basic thing for us. Every industry has its own market. As people in the industry, they should have a very positive understanding of the market. Otherwise, we don't know what kind of brand is good, what kind of brand is bad, and other related issues. How to buy such a brand?

4. Operation and application
1) Before operation, confirm that pipelines and valves have been washed. 　　
2) The operation of the valve drives the valve rod to rotate and complete according to the size of the input signal of the actuator: when the valve rotates 1/4 circle (90 °) in the positive direction, the valve is closed. When the valve is rotated 1/4 turn (90 °) in the opposite direction, the valve is open. 　　
3) When the direction indicating arrow of the actuator is parallel to the pipeline, the valve is open; When the arrow is straight with the pipeline, the valve is closed. 　　
5. The repair has a long service life and repair free period, which will depend on the following factors: normal working conditions, temperature/pressure ratio for consistent reconciliation, and reasonable corrosion data