Pressure Relief Valve DBW20B2-5X/220Y6EG24N9K4E - Bosch Rexroth R901115552

When a large pump delivers into a circuit at 220 bar, the relief valve has to be able to discharge the full flow. This version is rated at 450 l/min for that reason and covers a setting range of 4 to 220 bar. Adjustment is made on the internal hexagon under the protective cap, and the mass is 5.3 kg.

Benefits

• 450 l/min flow rating for power units with a large pump
• Setting range 4 to 220 bar at a maximum operating pressure of 350 bar
• Spool symbol B, two switching positions, two ports
• Internal hexagon with protective cap, subplate mounting to ISO 6264-08-13
• Solenoid actuation at 24 VDC, 3-pole connector (2 + PE) to EN 175301-803
• 5.3 kg mass, NBR seals for HL hydraulic fluid

Application

The place for this valve is the pump outlet of large power units on forming and assembly lines running at around 220 bar. The flow headroom keeps pressure close to the set point while discharging and so limits the load on the components. The solenoid switches the circuit without touching the value that was set.

Manufacturer

Bosch Rexroth lists this pressure relief valve DBW20B2-5X/220Y6EG24N9K4E under material number R901115552. Data sheets RE 25802 and RE 25802-B carry the characteristic curves, the installation dimensions and the subplate data. At 450 l/min, check line cross section and filter throughput in the return line.