Proportional Directional Valve 4WRZE25W8-220-7X/6EG24EK31/A1D3M - Bosch Rexroth R901068690

Return filters and oil coolers create back pressure that slows the pilot stage of a directional valve. The 4WRZE25W8-220-7X/6EG24EK31/A1D3M therefore drains pilot oil separately while still drawing it internally, at 220 l/min nominal flow and 350 bar.

Benefits

• External pilot oil return drains without back pressure and keeps switching time repeatable.
• Internal pilot oil supply removes the need for a separate feed line.
• The integrated pressure reducing valve limits pilot pressure at system pressure up to 350 bar.
• 220 l/min nominal flow, 870 l/min maximum, spool symbol W8.
• Analog ±10 V command processed by the on-board electronics, mass 20.66 kg.

Applications

Sensible in systems with a shared return, long tank lines or return filters of high resistance. Pilot control then stays independent of the pressure conditions in the working return. Mounting pattern ISO 4401-08-08-0-05, UKCA conformity.

Manufacturer

Bosch Rexroth, material number R901068690. Two documents are on file, and the data sheet gives characteristic curves, limit values and a filtration recommendation.