Rotary disk valve for power steering systems of motor vehicles

A rotary slide valve (1) for power steering in motor vehicles, with a first valve element, which is non-rotatably connected to a valve inlet member (4), with a second valve element, which is non-rotatably connected to a valve outlet member (5),

• wherein the first valve element is connected to the valve outlet member (5) by means of a torsion bar spring (9) and by means of a lost motion coupling,
• the two valve elements are disposed in a valve housing coaxially inside one another and can be maximally rotated in relation to each other over the rotational path of the lost motion coupling, and
• the inside of the radially outer valve element and the outside of the radially inner valve element have control longitudinal grooves (6, 7), which are limited at least partially in their axial length and which cooperate with one another in order to direct a pressure fluid to and from two working areas of a servomotor,
• characterized and that the suspension connection (10) is embodied in a play-free manner by means of resilient elements.