Pressure compensation valve

The invention relates to a pressure compensation valve which comprises a valve body and a valve sleeve, a piston is arranged in the valve sleeve, and a screw plug and a steel ball are arranged in the piston. And the piston pushes the valve core to move up and down to connect or disconnect the oil inlet cavity P to a runner cavity from the valve body to the actuator. A small hole of the piston is communicated with a flow channel flowing to an actuator on the valve body, the small hole is communicated with a small hole of the piston and a conical surface, an LS channel small hole communicated with each reversing valve is formed in the valve body, and the small holes are communicated with a groove of the valve body, a groove in the valve sleeve and the small hole all the time, so that LS pressure can enter a compensation cavity of the compensation valve all the time through a throttling groove in the piston. LS pressure enters the containing cavity containing the steel ball through the piston small hole and acts