| 摘要 |
<p>The invention proposes a valve arrangement for a hydraulic delivery device, in particular for a power-steering pump, having a piston (15) which can be displaced in a pressure-dependent manner within a bore counter to the force of a spring device (helical spring (41)) and of which the outer wall - in order to form a slide valve - butts in a sealing manner against the inner wall of the bore (9), and thus the inner wall of the bore - as seen in the axial direction of the bore - seals spaced-apart mouths of ducts (37, 61) with respect to one another, which valve arrangement is characterised in that the piston is equipped with a portion which acts as a seat valve. <IMAGE></p> |
