The Rexroth DBW20 5X normally closed/open pilot operated pressure relief valve consists of one pilot operated pressure relief valve mounted with 2/2way solenoid directional valve. The open or closed position of the 2/2 way solenoid directional valve depends on the electromagnet spool movement to achieve, the solenoid energized is open the valve, the valve is closed when the solenoid is de-energized, the different directional valve operation is according to the different requirements of the system design and work.
Rexroth DBW20 5X Normally Closed/Open Pilot Operated Pressure Relief Valve
There is a channel of the 2/2 way solenoid directional valve is connected with the pilot operated pressure relief valve, and another channel is connected with the oil return line to the tank, Operating solenoid allows a part of the pilot relief valve drain the pressure or keeping the pressure in the hydraulic system.
Rexroth DBW20 5X Normally Closed/Open Pilot Operated Pressure Relief Valve Figuration Drawing:
