Proportional Directional Valve 4WRLF25W6-350LJ-4X/MXY00/24ND90 - Bosch Rexroth R901569742

If the main circuit drops to very low pressure during the cycle, the pilot stage must not depend on it. The 4WRLF25W6-350LJ-4X/MXY00/24ND90 therefore takes its pilot oil from outside and returns it separately to tank while metering 400 l/min nominal flow at up to 350 bar.

Benefits

• External pilot oil supply and external pilot oil return keep the pilot stage working even with an unpressurised main circuit.
• 350 bar operating pressure, which is 70 bar above the 280 bar version of the same series.
• 400 l/min nominal flow in size 25, up to 1250 l/min possible by design.
• Fieldbus connection through the 7-pole connector to EN 175201-804 carrying voltage supply, enable and acknowledgment.
• Symbol W6, three switching positions, four ports, HL hydraulic fluid and NBR seals.

Application

This version pays off wherever a separate pilot power unit exists or the system pressure swings widely, for example in press drives and test rigs with decompression phases. The ISO 4401-08-08-0-05 interface matches the 280 bar version, so changing over needs no new subplate.

Manufacturer

Bosch Rexroth, material number R901569742. Conformity UKCA, electromagnetic compatibility per SI2016/1091.