High-toughness copper alloy kingston valve and valve body detection method

The invention relates to the technical field of ships, and discloses a high-toughness copper alloy kingston valve and a valve body detection method. A valve body comprises a bottom valve cavity, an upper valve cavity and a communication port, a support is arranged on the top portion of the valve body in a covering mode, a valve rod is arranged in the valve body, the upper end of the valve rod is fixed to the support, the lower end of the valve rod is connected with a pressing valve seat, the bottom of the pressing valve seat is connected with a spherical valve disc through a screw, a pilot hole is formed in the bottom of the valve disc, a bottom runner groove is formed in the lower end of the valve rod, and a middle runner groove is formed in the upper portion of the bottom runner groove. The kingston valve is of a double-seal pilot-operated type structure, when the kingston valve is opened, seawater enters the valve seat through the pilot hole in the head of the valve disc and then enters the valve cavity ab