What type of valve regulate direction of flow?

Directional control valves regulate the direction of fluid flow in a hydraulic or pneumatic system. They function by directing the flow path of the working fluid, allowing it to move to different actuators or components as required. Common types include spool valves and poppet valves, which can be actuated electrically, mechanically, or hydraulically to change flow direction. These valves are crucial in applications like robotics, automotive systems, and industrial machinery.