Pressure Relief Valve DBW20BG2-5X/315Y6EG24N9K4E - Bosch Rexroth R901320780

Besides the pressure port and the return port, this version brings a third port and is piped directly, without a subplate. A built-on directional spool valve handles solenoid unloading, so the pump can idle without pressure between strokes. The setting range of 3.8 to 315 bar covers high pressure circuits, and flow reaches 450 l/min.

Benefits

• Solenoid unloading through a built-on directional spool valve for pressureless idling
• Three ports and threaded connection, no separate subplate needed
• Setting range 3.8 to 315 bar, maximum operating pressure 350 bar
• Flow up to 450 l/min in size 25
• Pressure stage in poppet seat design with internal hexagon and protective cap
• 5.59 kg mass, 24 VDC through a 3-pole connector (2 + PE) to EN 175301-803

Application

This variant is needed in power units with long pauses between working strokes, for instance on clamping stations and test rigs. Unloading cuts wasted power and keeps the oil cooler, while the third port allows separate line routing. Piping runs straight to the valve.

Manufacturer

Bosch Rexroth lists this pressure relief valve DBW20BG2-5X/315Y6EG24N9K4E under material number R901320780. Data sheets RE 25802 and RE 25802-B carry the characteristic curves, the installation dimensions and the subplate data. Clarify the assignment of the three ports from the data sheet before installation.