Rotary member 1 of the valve has five through passages: three perpendicular to the axis of the member and two inclined passages which connect the passages at the ends with the middle ports. Port a is connected to the pump which delivers fluid under pressure. Ports d and b are connected to the ends of the power cylinder, and port e to the tank. In the position shown, the pump delivers fluid through ports a and d to the working end of the cylinder. Fluid from the exhaust end of the cylinder is discharged through ports b and e to the tank. If valve member 1 is turned 180°, the pump is connected through ports a and b to the high-pressure line, and the tank through ports d and e to the low-pressure line.
$3661$SHP,FC$