Anti-theft gate valve with lock

The utility model discloses an anti-theft gate valve with a lock. Valve seat and key, a plurality of blind holes are formed in the valve cover; a magnetic pin is inserted into the blind hole in a sliding manner; a pressure spring is installed between the end of the magnetic pin and the bottom of the blind hole, a lock hole corresponding to the blind hole is formed in the lower surface of the gland, a limiting protrusion is arranged on the upper surface of the gland, the key is arranged at the upper end of the gland, a limiting groove clamped with the limiting protrusion is formed in the key, and a magnet is embedded in the lower surface of the key. A limiting groove in the lower surface of the key is clamped with a limiting bulge at the upper end of the gland; the magnets and the magneticpins are in one-to-one correspondence, the magnets and the magnetic pins repel each other under the action of magnetic field force, the magnetic pins push the pressure springs to move downwards underthe action of magnetic for