A hydraulic valve system (1) has a supply connection arrangement, having a high-pressure connection (P) and a low-pressure connection, with a working connection arrangement, having two working connections (A, B), with a control valve (3), which is arranged between the supply connection arrangement and the working connection arrangement, and with a non-return valve (24, 28) for each working connection (A, B). The valve being arranged between the control valve (3) and the working connection arrangement. A tappet (36) mechanically opening the valve element (25, 29) of said non-return valve.

 
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