Valve block for regulating device, esp. for hydrostatic machine has e.g. pressure reduction valve with return spring and spring force controlled by adjusting member with movement stop

摘要

The valve block has a valve (9) with valve piston (14) charged in closing direction by a return spring (15). Spring force is adjusted by an adjusting member (16a), with member movement in direction of spring force increase defined by a stop element (112) in a position, in which the closing force of the spring reaches its max. value. Adjusting member and stop element are contained in module (82) screwed to the valve block. The valve is a pressure reduction valve, or flow control valve, and is located in an adjusting pressure line (24) to a cylinder for displacement volume control.