Flushing device for closed hydro-static circuit, has extraction valve, which is connected with working line of circuit by extraction line and with another working line of circuit by another extraction line

摘要

The flushing device (15) has an extraction valve (16), which is connected with a working line (6) of a circuit by an extraction line (18) and with another working line (7) of the circuit by another extraction line (19). The both extraction lines are connected during a pressure difference below the threshold value. Units (22,23) are provided for the prevention of a hydraulic short circuit.