Proportional Directional Valve 4WRZ10W6-85-7X/6EG24K4/D3M - Bosch Rexroth R900771949

Filters and coolers in the return line create back pressure that can affect the pilot stage of a proportional valve. This size 10 valve avoids that with external pilot oil supply and external pilot oil return. The main spool works to symbol W6 at a nominal flow of 85 l/min.

Benefits

• External pilot oil supply and external pilot oil return, independent of return line pressure
• Pressure reducing valve in the pilot stage for constant pilot pressure
• Nominal flow 85 l/min, maximum flow 170 l/min
• Symbol W6 in 3 switching positions across 4 ports
• Operating pressure up to 315 bar, subplate mounting to ISO 4401-05-05-0-05
• NBR seals for HL hydraulic fluid, mass 8.16 kg

Applications

The valve is used in systems with a long return line through coolers and filters, for instance in presses and large power units. Separate pilot oil routing keeps switching times predictable there.

Manufacturer

Bosch Rexroth lists this item of product family 4WRZ(E) under material number R900771949. Dimensional drawings, characteristic curves and installation notes are given in data sheet RE 29115, the series overview is RE 07600-B.