Valve for hydraulic props of shield-type support frames, and shield-type support frame

The invention relates to a valve , especially a check valve, for hydraulic plungers of shield-type support frames in underground mining with a valve housing and a switchable valve insert received therein, connections - for high pressure lines connected to the cylinder chamber and/or the annular space of the hydraulic cylinder , and at least one connection for an additional unit such as a pressure relief valve, a pressure sensor, and/or a pressure display. The valve housing can be mounted to the hydraulic cylinder , and in the mounting stage, the connections - on the valve housing extend axially parallel to the axis of the hydraulic plunger . According to an advantageous further embodiment, the valve housing can be provided with at least one fastening means for an extension housing that can be mounted in a releasable manner to at least one side wall B thereof for additional hydraulic functions of the shield-type support frame (see FIG. ).