Hydraulic directional valve e.g. pressure maintenance valve, for controlling pressure medium flow path, has detent device formed such that detent device is triggered if pressure medium volumetric flow in pressure medium flow path is zero
摘要
<p>The valve (46) has a detent device (66) over which a valve slide (58) of the valve is locked in a function position. The detent device is formed such that the detent device is triggered if pressure medium volumetric flow in a pressure medium flow path is zero. The detent device has a piston (84) for locking the valve slide. The piston has two piston surfaces (90, 92) turned away from each other. Upstream pressure in a locking direction of the detent device acts on one of the piston surfaces. Downstream pressure in a release direction acts on the other piston surface.</p>
