A hydraulic valve is a mechanical device that controls the flow of a liquid, often oil, via a hydraulic circuit. They are essential components of any hydraulic system because they can control the speed of motors and the movement of cylinders.
Hydraulic valves direct fluid to and from the cylinder in hydraulic power packs. Hydraulic valves can be used to regulate the flow of fluid power in a circuit. So these valves would regulate the pressure and flow rate in different portions of the circuit.
