How to properly install and maintain the two-way pressure butterfly valve

We know the characteristics of the two-way pressure butterfly valve , how to install it before use; how to keep it after use, here are a few points:
1. The valve should be blocked at both ends of the valve and stored in a dry, ventilated room. If it is stored for a long time, it should be checked regularly.
2. The valve should be cleaned before installation to eliminate defects caused during transportation.
3. The marking on the valve must be checked during installation. The ventilation butterfly valve should pay special attention to the flow direction of the medium and the flow direction marked on the valve.
4. For electric disc valves, it should be noted that the connected mains voltage must be the same as in the electric device manual.

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