How to Install a Hydraulic Control Valve

Feb 1, 2016

Hydraulic control valves can operate in any system that controls, directs or uses the flow of a liquid. Control valves can restrict or allow fluid flow as well as change its direction. The basic processes for installing any valves are very similar. Depending on what the valve is used for, it may be attached between two hydraulic lines, pipes or installed onto another hydraulic component.

1.Depressurize the hydraulic system. This could be as simple as turning the pumps off for a pump operated system. Consult your particular system documentation if your system is pressurized by other means, such as an accumulator.

2.Remove electrical power from the hydraulic system if it is pressurized by electric pumps.

3.Remove the old valve if necessary. First remove the electrical connector if it is a solenoid operated or other type of electrical valve. Then place buckets under the valve and unscrew the nuts leading to the valve.

4.Plug the hydraulic lines leading to and from the valve to minimize fluid loss. Use plastic or aluminum plugs that screw into the fitting. If these aren't available, a small plastic bag secured with a cable tie will suffice.

5.Position the new valve into place, and make sure the valve is in the correct orientation. Unplug the lines leading to the valve and connect them to the new valve. Tighten the nuts to the manufacturer's recommended torque.

6.Reconnect the electrical connector if applicable.

7.Supply electrical power if it is needed to pressurize the hydraulic system. Then re-pressurize the system by turning on the hydraulic pumps or recharging the accumulator per its operating instructions. Check for leaks while the system is pressurized.

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