Top-mounted ball valve is also called mounted ball valve. Its structural feature is that the valve body is made into a whole, and the upper part is equipped with a valve cover. The ball, sealing ring and valve seat are all loaded from the upper part of the valve body. Advantages of the top-mounted ball valve: When inspecting or replacing the valve seat, it is not necessary to remove the ball valve from the pipeline. You only need to open the valve cover and lift the ball out. This brings great convenience to underground pipelines, especially ball valves used in the atomic energy industry. . For three-way, four-way and multi-way ball valves, because of their large balls, it is inconvenient to install or remove them from either end channel. Moreover, the middle cavity of the valve body of the multi-way ball valve is very large. The top-mounted type is better than the side-mounted type.
