Patent ID: 8740186

Claim:
A hydraulic directional valve, comprising a valve body having a cylindrical bore defining at least three openings, and at least three fluid passages each fluid passage extending from outside the valve body to an opening of the at least three openings and providing a fluid flow path between the cylindrical bore and outside the valve body, a rotating body defining a portion effective, at one or more first rotational positions of the rotating body, to define a fluid path between any adjacent pair of openings of the at least three openings, the fluid path not in fluid communication with other openings of the at least three openings, the portion further effective, at one or more second rotational positions of the rotating body, to fluidically isolate the at least three openings from one another, at least one sealing arranged inside said cylindrical bore, said sealing having an outer lateral surface parallel with the axis of the cylindrical bore, and an inner lateral surface parallel with the lateral surface of the rotating body, wherein the rotating body comprises a frusto-conical shape.