Proportional Directional Valve 4WRZE25W9-220-7X/6EG24N9ETK31/F1D3M - Bosch Rexroth R901133735

Driving a large axis without a separate pilot circuit calls for a valve that supplies itself completely. The 4WRZE25W9-220-7X/6EG24N9ETK31/F1D3M takes pilot oil internally, returns it internally and controls 220 l/min nominal flow at operating pressure up to 350 bar.

Benefits

• Internal pilot oil supply and internal return, so no extra pilot lines are needed on the manifold.
• Integrated pressure reducing valve holds pilot pressure steady even when working pressure varies.
• 220 l/min nominal flow in size 25, up to 870 l/min maximum flow across the range.
• Current command value of 4 to 20 mA, robust against long cable runs in distributed plants.
• Concealed auxiliary actuation for commissioning and fault finding, weight 20.84 kg.

Applications

The valve is installed in presses, injection moulding machines and lifting gear whose power unit carries a single main pump. With piloting and return routed internally, plumbing effort stays low. Symbol W9 with three switching positions covers the usual directional function of a controlled axis.

Manufacturer

Bosch Rexroth, material number R901133735. Data sheet RE 29115 holds characteristic curves and installation dimensions, RE 07600-B adds general notes on hydraulic valves.