Sauer Danfoss Aps

Ken Petersen

Martin Raadkjaer Joergensen

The invention concerns a hydraulic valve arrangement () having at least two working connections (A, B), a check valve () being allocated to each working connection (A, B), and a pressure relief valve () being allocated to each check valve (), each pressure relief valve () being connected to a control pressure passage (). The valve arrangement shall ensure a reliable, pressure-less lowering, also in connection with single-actuated consumers, and further enable a pressure-less float position. For this purpose, the check valves () can be opened by means of tappets (), whose sides facing away from the check valves () are ending in a pressure chamber (), which is connected to the control pressure passage () of one of the pressure relief valves ().

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Soenderborg, Denmark

Ken Petersen