Mannesmann Rexroth Ag

Werner Herfs

Thomas Weickert

Jacques Maffini

The invention concerns a hydraulic control circuit in which the pressure medium conveyed by a hydraulic pump of variable delivery (,) is fed, in each case via a metering aperture (,), as a priority to a first hydraulic consumer (,) and only secondly to a second hydraulic consumer (,). A priority control system is now produced without additional delivery losses and with sufficient amounts of pressure medium being conveyed in that the valve member (,) of the priority valve (,) can be acted upon in the closure direction of the connection between the first connection (,) and the second connection (,) by a pressure prevailing in a line section (,) upstream of the first metering aperture (,).

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Lohr/Main, Germany

Werner Herfs