Pressure Relief Valve DBW30B1-5X/200S6EG24N9DLR12 - Bosch Rexroth R901256227

A size 32 circuit carrying up to 650 l/min needs protection that limits the pressure cleanly and can be unloaded on demand. The pilot-operated pressure relief valve DBW30B1-5X/200S6EG24N9DLR12 works as a seat valve with an adjustment range of 4 to 200 bar. A rotary knob handles the setting, and the 24 VDC solenoid the unloading.

Benefits

• Adjustment range of 4 to 200 bar within an operating pressure, max. of 350 bar.
• Flow of up to 650 l/min in size 32, built as a seat valve.
• Pilot-operated design, which keeps the pressure curve flat across the flow range.
• Unloading through the solenoid on 24 VDC with 2 switching positions.
• Subplate mounting with a connection diagram to ISO 6264-10-17 and 2 ports.
• Cable gland as the electrical connection, NBR seals for HL hydraulic fluid.
• Setting at the rotary knob, with a valve weight of 6.49 kg.

Applications

The valve is fitted at the pump outlet of large power units, where it caps system pressure and returns the delivery to tank without pressure during idle periods. Power losses in cycle pauses drop while the pump keeps turning. Sizing follows the 650 l/min of flow and the chosen setting between 4 and 200 bar, and the subplate follows ISO 6264-10-17.

Manufacturer

Bosch Rexroth supplies the valve as material number R901256227 within the DB.10-30 product family. The data sheet holds the pressure to flow curves and the solenoid specification.