Hydraulic valve

A hydraulic valve for an oscillating-motor camshaft adjuster, comprising:

• a bush,
• a hollow piston with a piston bottom on which an actuator is applied,
• the piston being axially movable within the bush by means of the actuator against a force of a screw-type pressure spring,
• a sleeve within the hollow piston which is secured in the bush and disposed for movement relative to the piston, and
• a wall of the sleeve having at least one though-opening, which leads to at least one opening of the hollow piston, the at least one opening of the hollow piston leading a supply pressure applied inside the sleeve alternatively to two sets of pressure chambers of the oscillating-motor camshaft adjuster,
• wherein:
• the sleeve has a sleeve bottom closing an inside space of the hollow piston,
• the bush has two working ports for adjusting the two sets of pressure chambers,
• the two working ports are axially distanced relative to one another, and
• an additional port is provided between the two working ports for utilizing camshaft alternating torques.