Hydraulic valves are used to manipulate the flow of hydraulic fluid within a hydraulic circuit and are mechanically or electronically activated.

Directional Control Valves are the most commonly used valves in hydraulic systems. Control valves direct the hydraulic fluid flow from the pump to the actuators or other parts of the hydraulic circuit. Control valves return to their neutral state by a spring or are held in each position by a holding mechanism.

These hydraulic valves are often used to control the direction of a hydraulic motor or cylinder; they can also perform other functions in a circuit.

DUTIES:

• Hydraulic valves direct the fluid medium relative to the hydraulic system.

• They come in varying sizes according to International Standards.

• In a given hydraulic system, hydraulic valves perform different functions and keep the system working well.

• The three basic models of hydraulic valves are pressure control, flow control and directional control hydraulic valves.

• They all have a specific function in the hydraulic system and their names are self-explanatory. These three types of valves are smooth in operation and performance and work throughout the system.