Which component in a hydraulic system directs the flow of fluid?

In a hydraulic system, the selector valve is essential for managing the direction of fluid flow. These valves are designed to open and close specific pathways in the system, essentially controlling the route the hydraulic fluid takes. By doing this, the selector valve enables the operator to direct the movement of hydraulic actuators, such as cylinders or motors, depending on the desired operation within the system.

Unlike other components, such as a pressure gauge, which measures the pressure within the fluid, or a filter, which cleans the fluid of contaminants, the selector valve actively influences how the hydraulic fluid is distributed. An accumulator, on the other hand, stores energy in the form of pressurized fluid, but does not play a role in directing flow. Therefore, the selector valve is the correct answer as it is specifically designed to control and direct the movement of hydraulic fluid in the system.