The control valves adapt the network pressure and the flow.
The function of a control valve is to adjust the pressure that is downstream of the hydraulic valve in relation to the hydraulic pressure upstream pressure.
There are many configuration possibilities behind the hydraulic control valves in order to meet all the requirements regarding pressure or flow.
For instance, the pressure reducer hydraulic valve is able to reduce pressure up to ⅓ of the inlet pressure. therefore, for a 6 bar inlet pressure it could get 2 bar outlet pressure.
The pressure reducer hydraulic valves are used to protect hydraulic installation and adjust the pressure supply.
You already know how a control valve works but let us explain you how a pressure reducer hydraulic valve works.
First of all to understand its functioning you must know all the assets that a pressure reducer valve has. These valves are made up of a reducer pilot, a 3 way valve, a filter and a manometer that shows the outlet pressure.
The hydraulic pilot will act to adjust the outlet pressure. Therefore, the pilot sets downstream pressure regardless of inlet pressure. In the event that the upstream pressure is less than the set value, the pilot will leave the hydraulic valve open and will act only when the downstream pressure exceeds the set pressure.