液压活塞（1）的两侧（1a，1b）通过伺服管线（13a，13b）通过压力调节器（4a，4b）和电磁伺服阀（2）连接到控制压力管线（12） 从单独的泵（PS）或罐（T）。 为了降低对伺服阀的压力和流量的要求，通过止回阀（10a，10b）和单个限压阀（11）从伺服线路提供附加的直接排水管路（14a，14b）到 坦克。 伺服电机可以在四象限模式和/或闭环中运行。

The invention relates to a flow regulator for a hydraulic machine (P) having a variable delivery volume, wherein the active sides (1a, 1b) of the two-side actuator (1) of the hydraulic machine (P) via power lines (13a, 13b) and a servo valve (2) optionally with the control pressure line (12) or the tank (T) are connectable, and in the servo lines (13a, 13b) in each case a pressure regulator (4a, 4b) is disposed, wherein the connection of the associated effective side (1a, 1b) with the associated terminal ( A, B) of the hydraulic machine (P) allows instead of with the servo valve (2) or the closure of the respective control line (13). It is further developed so that the adjustment of the hydraulic machine by means of the superimposed pressure control is optimal quickly possible and the flow controller can be small and inexpensive manufactured a generic pressure regulator for an adjustable hydraulic machine. This is achieved by the servo lines (13a, 13b) direct discharge lines (14a, 14b) branch off via at least one pressure relief valve (9, 11) to the tank (T).