Position feedback power control valve

The utility model discloses a position feedback power control valve, which comprises an associated variable piston, a valve pocket and a valve backseat. The variable piston is equipped with an A1-shaped cavity opening communicating with a piston cavity. The valve pocket is equipped with a central through cavity equipped with a slide cavity. The slide cavity is equipped with a P-shaped cavity opening, an A-shaped cavity opening and a B-shaped cavity opening.A valve core is arranged inside the slide cavity. The valve core is equipped with a P1-shaped connection groove, a B1-shaped connection groove, a P2-shaped close protruding loop and a B2-shaped close protruding loop, which match with the P-shaped cavity opening, the A-shaped cavity opening and the B-shaped cavity opening.A feedback rod is sleeved in the cavity of the valve core. The front end of the feedback rod extends into the core space of the variable piston to connect with the variable piston through the central through cavity. The rear end of the feedback rod is connected with a feedback controlling means. The feedback controlling means is arranged in the core space of the valve backseat matching with the valve pocket. The valve core seat of the valve core and the feedback controlling means are linked in matching type. The valve has the advantages of convenient usage and maintenance, stable and reliable performance and so on.