Electromagnetic water valve

The utility model provides an electromagnetic water valve which comprises a water valve shell, a coil assembly arranged in the water valve shell and a sleeve arranged on the coil assembly in a penetrating mode, one end of the sleeve is connected with a pipe cap, and a movable iron core is connected in the sleeve in a sliding mode. A plurality of positioning protrusions are distributed on the inner wall of the end, close to the pipe cap, of the sleeve in the circumferential direction, and the inserting end of the pipe cap is in interference fit with the positioning protrusions. After the insertion end of the pipe cap is inserted into the sleeve, the pipe cap is in close fit with the positioning protrusion, so that the pipe cap is accurately preassembled in the sleeve, and then a gap between the pipe cap and the inner wall of the sleeve is filled with welding flux for welding. The pipe cap is tightly matched with the positioning protrusion, so that the follow-up welding process is simple and convenient, the wel