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Directional Control Valves

A valve is a device that receives an external signal (mechanical, fluid pilot signal, electrical or electronics) to release, stop or redirect the fluid that flows through it. The function of a DCV is to control the direction of fluid flow in any hydraulic system. A DCV does this by changing the position of internal movable parts. To be more specific, a DCV is mainly required for the following purposes: To start, stop, accelerate, decelerate and change the direction of motion of a hydraulic actuator. To permit the free flow from the pump to the reservoir at low pressure when the pump’s delivery is not needed into the system. To vent the relief valve by either electrical or mechanical control. To isolate certain branch of a circuit.

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