Proportional Directional Valve 4WRTE25W8-350L-4X/6EG24K31/F1M - Bosch Rexroth R901076888

Between cold start and continuous duty the viscosity of the oil changes noticeably, and an uncontrolled valve shows that as drift. This 4WRTE holds the spool position through an internal control loop while delivering 350 l/min nominal flow at 350 bar.

Benefits

• Internal position control compensates the influence of viscosity and flow forces.
• 350 l/min nominal flow, up to 870 l/min maximum, at 350 bar operating pressure.
• Fully external pilot routing for plants with their own filtered pilot circuit.
• 4...20 mA command with live zero, so a broken line is detected at once.
• On-board electronics at the valve, 24 VDC supply, weight 18.04 kg.

Applications

The valve is used on plants with strongly varying oil temperature, such as power units installed outdoors, forging equipment and test benches with long breaks between cycles. The ISO 4401-08-08-0-05 interface corresponds to size 25. Sealing is NBR for HL hydraulic fluid.

Manufacturer

Genuine Bosch Rexroth part, material number R901076888.