Proportional Directional Valve 4WRZE25W8-220-7X/6EG24N9EK31/F1M - Bosch Rexroth R901016326

Some manifolds have no X channel but do offer a free bore for the pilot drain. This version is built for that case: internal supply, external drain Y, 220 l/min nominal flow and a 4...20 mA current command.

Benefits

• Internal pilot oil supply removes the need for an X line in the existing manifold.
• External drain Y carries the pilot oil away separately, so the tank channel does not affect the null position.
• Nominal flow of 220 l/min with spool symbol W8, maximum flow 870 l/min.
• A 4...20 mA current command suits long cable runs and electrically noisy surroundings.
• Operating pressure up to 350 bar, mass 20.2 kg, 7-pole connector (6 + PE).

Applications

This case turns up when retrofitting plants that have grown over the years, where the old valve is replaced but the manifold stays as built. The Y bore is routed to tank without pressure and everything else remains unchanged. The standard size 25 interface pattern secures the swap without machining.

Manufacturer

Bosch Rexroth builds this valve under material number R901016326. Quote that number when ordering and keep it in the spare parts list of the machine. Characteristic curves, installation dimensions and connection diagrams are in data sheet RE 29115 and RE 07600-B.