Proportional Directional Valve 4WRZ32W9-520-7X/6EG24N9EK4/D3M - Bosch Rexroth R900979880

An external pilot oil return keeps pilot control clear of back pressure from port T. This version with spool symbol W9 converts 520 l/min nominal flow and works at operating pressures up to 350 bar.

Advantages

• External pilot oil return, internal supply from port P
• Nominal flow 520 l/min, maximum flow up to 1600 l/min
• Spool symbol W9, three switching positions, operating pressure up to 350 bar
• Pressure reducing valve in the pilot stage keeps pilot pressure constant
• External amplifier electronics on 24 VDC, concealed auxiliary actuation
• NBR seals for HL hydraulic fluid, 43.96 kg, connection diagram ISO 4401-10-09-0-05

Applications

Used on power units with a return filter, cooler or shared collecting line where several bar sit in port T. The separate drain keeps the characteristic curve repeatable. Control comes from an amplifier card in the cabinet.

Manufacturer

Bosch Rexroth, material number R900979880. The article carries type designation 4WRZ32W9-520-7X/6EG24N9EK4/D3M. Characteristic curves, limits and installation notes are in data sheet RE 29115, the range overview RE 07600-B adds to it.