Proportional Directional Valve 4WRZE32W6-520-7X/6EG24N9K31/A1D3M - Bosch Rexroth R901108884

Anyone building a new valve stand has normally planned the control oil loop as a separate assembly. The 4WRZE32W6-520-7X matches that with external pilot supply plus external pilot drain, controlling 520 l/min nominal flow at 350 bar.

Benefits

• ±10 V command from any common analogue card, supply 24 VDC.
• 520 l/min nominal flow in size 32 against a limit of 1600 l/min.
• Spool symbol W6, three switching positions, four ports.
• Pilot oil fed externally, drained externally, pilot stage with pressure reducing valve.
• 350 bar operating pressure with NBR seals on HL hydraulic fluid, 43.8 kg.
• ISO 4401-10-09-0-05 subplate mounting, 7-pole connector (6 + PE) to EN 175201-804.

Application

Rolling mills or steelworks mount their valves on shared manifolds fed by a dedicated control oil supply. Fully external piloting pays off there, because neither system pressure nor tank pressure alters the switching times. The concealed auxiliary actuation stays accessible for emergencies.

Manufacturer

Bosch Rexroth, material number R901108884, product family 4WRZ(E). Curves, pilot pressure plus installation notes sit in data sheet RE 29115, with the programme overview in RE 07600-B. Conformity UKCA under SI2016/1091.