Proportional Directional Valve 4WRZ10E85-7X/6EG24ETK4/V - Bosch Rexroth R978914378

A proportional valve replaces the pairing of directional valve and throttle because it varies its opening steplessly. At a nominal flow of 85 l/min this pilot-operated size 10 valve passes 170 l/min at maximum. FKM seals define the sealing material, and operating pressure reaches 315 bar.

Benefits

• Nominal flow 85 l/min with a maximum flow of 170 l/min
• Stepless adjustment of direction and speed across 3 switching positions to symbol E
• FKM seals at all sealing points
• Internal pilot oil supply and internal pilot oil return, so no extra lines are needed on the manifold
• Version without a pressure reducing valve in the pilot stage
• Operating pressure up to 315 bar, subplate mounting to ISO 4401-05-05-0-05, mass 8.24 kg

Applications

The valve controls feeds, lifting motions and rotary drives that should start smoothly and stop accurately. It is driven from external electronics whose ramps and gain can be matched to the machine.

Manufacturer

Bosch Rexroth lists this item of product family 4WRZ(E) under material number R978914378. Dimensional drawings, characteristic curves and installation notes are given in data sheet RE 29115, the series overview is RE 07600-B.