Proportional Directional Valve 4WRZE25E1-220-7X/6EG24N9K31/A1D3V - Bosch Rexroth R900930164

Fine control edges react more sensitively to particles than the large main spool does. Anyone who wants to hang the pilot stage on its own finely filtered circuit takes this build with external supply and external return, 220 l/min nominal flow and spool symbol E1.

Benefits

• Fully external pilot circuit, so its own filtration rating can be chosen for the sensitive pilot stage.
• Spool symbol E1, 3 switching positions, 4 ports, ISO 4401-08-08-0-05.
• Nominal flow 220 l/min, flow up to 870 l/min, operating pressure up to 350 bar.
• ±10 V command value, 24 VDC supply through a 7-pole connector (6 + PE) to EN 175201-804.
• Weight 20.86 kg, FKM seals, HL hydraulic fluid.

Applications

The variant has proved itself in foundry and rolling mill hydraulics, where the main circuit gets dirtier than the pilot circuit. Pilot oil supply is usually built with a dedicated fine filter. The return runs pressureless to tank.

Manufacturer

Bosch Rexroth, material number R900930164. Product family 4WRZ(E) in size 25, concealed manual override, UKCA conformity to SI2016/1091. Further details are given in data sheets RE 29115 and RE 07600-B.