Pressure Relief Valve DBW20B2-5X/350US6EG24N9K4R12/12 - Bosch Rexroth R978933459

If pressure rises above the permitted value, the oil has to reach the tank without delay. The pilot-operated pressure relief valve DBW20B2-5X/350US6EG24N9K4R12/12 in seat design handles this for flows of up to 500 l/min and can be adjusted within a range of 2 to 350 bar.

Advantages

• Setting range of 2 to 350 bar through an internal hexagon with protective cap.
• Discharge of up to 500 l/min through the subplate mounting to connection diagram ISO 6264-08-13.
• Seat valve as the main stage, laid out for a maximum operating pressure of 350 bar.
• Electrical unloading at 24 VDC through two switching positions and a connector, 3-pole (2 + PE) according to EN 175301-803.
• Weight of 5.3 kg in size 25 with two ports.
• HL hydraulic fluid with NBR seals for operation on mineral oil.

Application

The valve protects pump circuits and consumers in power units, presses and test rigs against excessive pressure. Because unloading is switched electrically, the control system can keep the circuit depressurised during idle periods without stopping the drive. The subplate mounting to ISO 6264-08-13 makes replacement on existing size 25 plates straightforward. At flows close to 500 l/min the return lines have to be dimensioned accordingly.

Manufacturer

Bosch Rexroth, material number R978933459, product family DB.10-30. Characteristic curves, leakage figures and installation dimensions are given in the data sheets Pressure relief valve (RE 25802) and Pressure relief valve (RE 25802-B).