Flow control proportional valves are key components in advanced hydraulic systems, as they allow continuous and precise regulation of fluid flow rate based on an electrical control signal. Unlike on-off solutions, these valves enable progressive actuator movement, improving accuracy, repeatability and dynamic performance of the system.

Their operating principle is based on the controlled variation of the flow passage area: through proportional spool actuation, the valve regulates flow rate, often compensating for pressure variations. This makes them ideal for applications requiring smooth and uniform motion, regardless of load conditions, such as machine tools, presses, handling systems and industrial automation.

fluid-hub offers a selection of proportional flow control valves designed to ensure high regulation stability, easy integration into hydraulic circuits and compatibility with modern electronic control systems.

Within complex systems, these valves often operate alongside directional proportional valves and pressure control proportional valves, enabling complete and dynamic fluid management. In simpler applications or auxiliary functions, they may be combined with on-off valves, while filling valves, valve spare parts and dedicated digital drivers are used in specific configurations.

Browse the full hydraulic valves section for an overview of all available types. To monitor filtration efficiency, essential in proportional applications, fluid-hub offers clogging indicators; for complete filter group selection, see our hydraulic filters.