Valve with pressure medium inlet and outlet chambers connectable together by inlet valve

摘要

The valve system comprises a control piston (5) is pressurized by a first control chamber (2). A first control valve (34, 33, 30, 31) is provided, via which the first control chamber is selectively connectable with a pressure medium source or a pressure medium depression. An outlet valve (17, 18) connects the pressure medium outlet chamber (15) with a pressure medium depression. Between the inlet valve and the pressure medium outlet chamber is arranged a check valve closing in the direction of the inlet valve, by means of which a back flow of pressure medium from the pressure medium outlet chamber into the pressure medium inlet chamber is prevented.