How to open and close the electric double position butterfly valve stem according to the technical specification? 1. Both ends of the valve channel must be blocked, and there is a dry and ventilated room. If it is stored for a long time, the rust prevention shall be checked frequently.
2. The valve shall be cleaned before installation and the defects caused during transportation shall be eliminated.
3. During installation, the marks and nameplates on the valves must be carefully checked to see if they meet the operating requirements.
4. The valve is installed on the horizontal pipeline with the valve cover upward.
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