Pressure Relief Valve DBW30B2-5X/315-6EG24N9K4/12 - Bosch Rexroth R900941920

On a pilot-operated relief valve the symbol decides how the spring chamber of the main stage is unloaded electrically. The DBW30B2-5X/315-6EG24N9K4/12 in size 32 is built to symbol B and limits adjustably from 4 to 315 bar.

Benefits

• Two switching positions to symbol B, electrical unloading at 24 VDC.
• Adjustment range 4 to 315 bar, secured by an internal hexagon with protective cap.
• 650 l/min relief capacity at a maximum operating pressure of 350 bar.
• Poppet seat pilot stage, shutting off tightly with no permanent leakage flow.
• 6.4 kg on port pattern ISO 6264-10-17, NBR seals for HL hydraulic fluid.

Applications

In power units with long pauses between working strokes, electrical unloading saves drive power and keeps the oil temperature down, because the pump circulates unloaded instead of delivering against the limiting pressure. The capped version suits plants where the limiting pressure is set once and is not meant to be altered afterwards. At 650 l/min, size 32 also covers units with several pumps running in parallel.

Manufacturer

Bosch Rexroth, material number R900941920, product family DB.10-30. The symbol assignment, the characteristic curves and the pilot stage data are found in the pressure relief valve data sheet (RE 25802) and in RE 25802-B.