Pressure Relief Valve DBW 20 BG2-5X/50U6EG125N9K4V/12 - Bosch Rexroth R978916235

Once the accumulator is charged, the pump has to be unloaded while the circuit keeps its pressure. The BG2-5X/50U6EG125N9K4V/12 handles that as a pilot-operated pressure relief valve in poppet seat design, with solenoid unloading through a built-on directional spool valve.

Benefits

• Solenoid unloading via a built-on directional spool valve, switched from 12 VDC.
• Operating pressure to 350 bar, relief flow to 500 l/min in size 25.
• Pressure adjustment range 2...50 bar at the internal hexagon under a protective cap.
• Poppet seat design, tight shut-off in the unloaded state, 2 ports and 2 switching positions.
• FKM seals, 6.6 kg, threaded connection to ISO 6264-08-13, UKCA to Low-Voltage Directive SI2016/1091.

Applications

The typical place is the accumulator charging circuit of presses and clamping systems, where the pump should idle without pressure after charging. The internal hexagon under the protective cap allows manual pressure adjustment without dismantling. FKM seals suit applications at raised temperature or with a different hydraulic fluid.

Manufacturer

Bosch Rexroth, material number R978916235. Characteristic curves and setting notes are given in data sheets RE 25802 and RE 25802-B on the pressure relief valve.