Pressure Relief Valve DBW20B2-5X/250-6EG24N9K4E - Bosch Rexroth R901021757

In series machines the cut-off pressure is set once at commissioning and never touched again. For that case this version carries an internal hexagon under a protective cap and covers 4 to 250 bar. The pilot-operated poppet valve in size 25 discharges up to 400 l/min and weighs 5.4 kg.

Benefits

• Setting range 4 to 250 bar, covered by the protective cap once it is set
• Pilot-operated poppet valve in size 25 rated for up to 400 l/min
• Spool symbol B, two switching positions, two ports
• Subplate mounting to ISO 6264-08-13, maximum operating pressure 350 bar
• Solenoid actuation at 24 VDC, 3-pole connector (2 + PE) to EN 175301-803
• 5.4 kg mass, NBR seals for HL hydraulic fluid

Technical data

Application

The version is intended for series power units on presses, feed drives and clamping systems designed for 250 bar. The covered adjustment stops system pressure from being altered unnoticed during operation. The solenoid switches the circuit from the machine control.

Manufacturer

Bosch Rexroth lists this pressure relief valve DBW20B2-5X/250-6EG24N9K4E under material number R901021757. Data sheets RE 25802 and RE 25802-B carry the characteristic curves, the installation dimensions and the subplate data. The value set at commissioning belongs in the machine documentation.