Proportional Directional Valve 4WRZE25E220-7X/6EG24N9EK31/A1V - Bosch Rexroth R978916577

The valve distributes up to 220 l/min nominal flow across four ports with electrical spool position feedback. At 350 bar operating pressure the flow limit reaches 870 l/min. Internal pilot supply removes the need for a separate feed line, the return is routed externally.

Benefits

• 220 l/min nominal flow, 870 l/min flow limit, operating pressure to 350 bar
• Internal pilot oil supply with external pilot oil return, one port less on the manifold
• On-board electronics, analog command value plus to minus 10 V at 24 VDC
• Spool symbol E, 3 switching positions, concealed manual override
• FKM seals, HL fluid, UKCA to SI2016/1091, mass 20.58 kg

Applications

The variant is intended for presses as well as test rigs whose pilot pressure comes from the working line. In cycles with fast reversal, internal position feedback keeps the spool steady. The ISO 4401-08-08-0-05 pattern is standardised, so a same-size valve can be swapped in.

Manufacturer

Bosch Rexroth lists this build as R978916577. Data sheet RE 29115 on the pilot-operated proportional directional valve carries every curve.