YINGLI tells you how to install the ball valve
1. The front and rear pipes should be coaxial, and the sealing surface of the two flanges should be parallel.
2. Remove the protective parts from the connecting flanges at both ends of the ball valve.
3. Check the marking of the ball valve to ensure that the ball valve is intact.
4. Clean the oil in the pipeline.
5. Check the valve hole to remove dirt.