Valve is with limited corner torque motor

The utility model provides a valve is with limited corner torque motor, the utility model discloses an in the cylinder casing, set up a cylinder sleeve, between casing and sleeve, cylinder stator module, cylinder rotor subassembly at the sleeve center, cylinder casing one end is spacing end cover, does sealed the processing between sleeve and the spacing end cover, prevents that the liquid in the pivot gets into the sleeve from getting into stator module, the upper and lower symmetry of rotor core in the rotor subassembly is opened has the platform, pastes the magnet steel on the upper and lower platform respectively, and the magnet steel polarity identical on the upper and lower platform, and length is different. The advantage is that motor stator subassembly and rotor subassembly carry out physics keeps apart, prevents that the liquid in the pivot gets into the sleeve from getting into stator module, can work under adverse circumstances. Simultaneously, the great problem of air gap of motor has been solved.