Abstract

The system includes a way valve of the type provided with a housing, fluid inflow and consumer ports in the housing, and at least one valve member movable in the valve housing for establishing connections between ports. A positioning arrangement receives an electrical input signal and positions the valve member in dependence thereon. A desired-value selector generates a desired-value signal indicative of the desired volumetric flow rate for the flow of fluid into the fluid inflow port and out one of the consumer ports. Transducers sense the position of the valve member and the pressures at the inflow and consumer ports and generate corresponding electrical feedback signals. A circuit arrangement connected to the desired-value selector and to the transducers compensates for the effect upon such volumetric flow rate of variations in the hydraulic loading of consumers supplied via the way valve by furnishing the aforementioned electrical input signal to the positioning arrangement as a predetermined function of both the desired-value and feedback signals.