Pressure Relief Valve DBW20B1-5X/200X6EG24N9DK25L/12=CSA - Bosch Rexroth R900976225

Capping the pressure in a power unit calls for a valve that opens at a defined point and stays tight below it. This pilot-operated pressure relief valve of size 25 holds the system pressure at the value set on the rotary knob, anywhere between 4 and 200 bar, while passing up to 500 l/min back to tank.

Key benefits

• Setting range of 4 to 200 bar at the rotary knob, repeatable without tools
• Maximum flow of 500 l/min suits power units with high pump output
• Operating pressure up to 350 bar leaves headroom above the setting range
• Poppet valve design keeps leakage low in the closed position
• Electrical unloading through the 24 VDC solenoid, driven from the machine control
• Connection pattern to ISO 6264-08-13 fits existing size 25 subplates

Technical data

Applications

The valve normally sits in the pressure line of a pump unit or ahead of a press cylinder, where pressure has to be capped and released between strokes. The 5-pole connector to ANSI/B93.55M-1981 is common in North American machine building. NBR seals match mineral oil of the HL group.

Manufacturer

Bosch Rexroth, material number R900976225. Characteristic curves and installation dimensions are given in datasheet RE 25802, supplementary data in datasheet RE 25802-B.