Which valve is used in hydraulic systems to direct pressurized fluid to one end of an actuator?

The selector valve is specifically designed to direct pressurized fluid within hydraulic systems, allowing the operator to choose which actuator or component receives the fluid. This ability to route fluid flow means that multiple actuators can be used in a system, but only one at a time, which is particularly useful for applications where space and resource optimization are important.

In contrast, other valve types serve different purposes in hydraulic systems. A check valve is primarily for preventing backflow, ensuring that fluid only moves in one direction. A relief valve is responsible for protecting the system by releasing pressure when it exceeds a certain threshold, thus preventing damage. A control valve adjusts the flow rate and pressure within the system but does not have the specific capability to direct fluid to different actuators selectively.

Therefore, the selector valve's function of directing pressurized fluid makes it the appropriate choice for the scenario described in the question.