Metal ball valve for cutting fluid surface

The utility model relates to the technical field of ball valves, and discloses a metal ball valve for cutting a fluid surface. The metal ball valve capable of cutting the fluid surface comprises a valve body, a waterproof rubber strip is installed on the rear side of the valve body in an embedded mode, a fixing plate is installed on the outer side of the valve body in a penetrating and inserting mode, a fixing bolt is installed on the outer side of the fixing plate in a penetrating and inserting mode, and a nut is installed at the tail end of the fixing bolt in a penetrating and inserting mode. Due to the fact that the hole diameter of the center opening structure of the blocking disc is smaller than the inner diameter of the connecting pipe, after the valve is closed, the pressure of a medium in the inlet end of the valve body can be transmitted to the blocking disc, the blocking disc moves towards the valve element, and therefore the valve seat made of silica gel is extruded and tightly attached to the surf