Patent ID: 8839820

Claim:
A control valve for controlling pressure medium flows, which comprises: a cylindrical valve housing having a housing cavity, the housing cavity is open at one side and has an axial outflow port, a radial first working port, a radial second working port, a radial third working port, a first radial pressure port and a second radial pressure port, each port open into the housing cavity, the first pressure port being arranged in an axial direction between the first working port and the second working port and the second pressure port being arranged in the axial direction between the second working port and the third working port; and a cylindrical control piston, which is axially movable within the housing cavity, having a piston cavity open at one side toward the outflow port, the control piston being designed such that, as a result of axial displacement thereof the first working port and the second working port can be fluidly connected, selectively, to the first pressure port and the outflow port, the third working port can be fluidly connected, selectively, to the second pressure port and the outflow port, so that in a first piston position, the first working port is fluidly connected to the first pressure port and simultaneously the third working port is connected in fluid communication to the outflow port, and in a second piston position, the second working port is fluidly connected to the first pressure port and simultaneously the third working port is fluidly connected to the outflow port.