Casting with external control sealing ball valve

The utility model discloses a casting with an external control sealing ball valve, which relates to the technical field of castings of sealing ball valves, and comprises a valve body, a limit mounting component is arranged in the valve body, a sealing connecting pipe is movably connected with a regulating valve through an air pressure detection pipe, and the regulating valve can be used for detecting and regulating air pressure in the valve body. A sealing shell arranged on the right side face of the valve body is installed and used in a sealed mode through a sealing cover, a guide sleeve on the left side face of the valve body achieves the guiding and limiting effects on the guide sleeve through a first guide ring and a second guide ring on the outer wall and a guide rod, and a valve rod arranged in the middle of the interior of the valve body is movably connected with a transmission rod, so that the valve body is convenient to use; a sliding sleeve arranged on the inner wall of the guide sleeve can prevent