Proportional Directional Valve 4WRZE25E1-325-7X/6EG24N9K31/F1D3V - Bosch Rexroth R901099818

Hot oil and aggressive additives attack seals, which is why this version carries FKM seals. Its pilot circuit is fed and drained externally, while the size 25 valve handles 325 l/min nominal flow at up to 350 bar operating pressure.

Benefits

• 325 l/min nominal flow with a permissible flow of up to 870 l/min.
• External pilot oil supply and external pilot return keep control and working circuits apart.
• Spool symbol E1, three switching positions, four ports, ISO 4401-08-08-0-05 mounting pattern.
• 4 to 20 mA current command, 24 VDC supply, integrated pressure reducing valve.
• Maximum operating pressure 350 bar, FKM seals for HL hydraulic fluid, installed weight 20.48 kg.

Applications

The version fits test rigs, plastics machinery and rolling mill axes where the working return line carries back pressure. A 4 to 20 mA current command stays stable over twenty metres of cable. The concealed manual override allows an axis to be moved with the electronics switched off.

Manufacturer

Bosch Rexroth, material number R901099818, product family 4WRZ(E). Data sheet RE 29115 documents characteristic curves and limit values, RE 07600-B summarises the programme of hydraulic valves.