Pressure Relief Valve DBW 20 B2-5X/315U6EG24N9K4V/12 - Bosch Rexroth R978916442

The DBW 20 B2-5X/315U6EG24N9K4V/12 pressure relief valve protects high flow circuits and can also be unloaded electrically. As a pilot-operated poppet valve in size 25 it passes up to 500 l/min, with a pressure setting range between 2 and 315 bar.

Benefits

• 500 l/min maximum flow: subplate mounting to connection diagram ISO 6264-08-13 in size 25.
• Setting range 2 to 315 bar: adjusted by internal hexagon under a protective cap, maximum operating pressure 350 bar.
• Electrical unloading: solenoid actuation at 24 VDC through a connector, 3-pole (2 + PE) according to EN 175301-803.
• FKM seals: matched to HL hydraulic fluid.
• 5.3 kg weight: 2 ports, 2 switching positions, spool symbol B.

Application

The usual place for this valve is the pump outlet of a large power unit, where peak pressure has to be capped and the pump unloaded during idle phases. Because the solenoid handles the unloading, a separate bypass valve is not required. FKM seals and the 500 l/min rating suit presses, injection moulding machines and test rigs.

Manufacturer

The manufacturer is Bosch Rexroth. Use material number R978916442 for ordering, spare part matching and technical enquiries. Characteristic curves, installation dimensions and tightening torques are listed in data sheets RE 25802 and RE 25802-B.