Proportional Directional Valve 4WRTEM16E1-220L-4X/6EG24K31/A1M - Bosch Rexroth R901510427

If pressure in the main channel drops during start-up, an internally piloted valve loses actuating force. This size 16 version draws pilot oil through a dedicated line and keeps the spool under control in that moment, while metering 220 l/min nominal flow.

Benefits

• External pilot oil supply decouples the pilot stage from load pressure in port P.
• External pilot oil return carries leakage away without pressure and protects the pilot stage from tank back pressure.
• 220 l/min nominal flow and 460 l/min peak flow at 350 bar operating pressure.
• Spool symbol E1 with internal spool position feedback for symmetric behaviour in both directions.
• On-board electronics with ±10 V command value, interface ISO 4401-07-07-0-05, weight 11.5 kg.

Applications

External pilot supply pays off in accumulator circuits, in systems with strongly varying system pressure and wherever several valves share one pilot source. Pilot pressure also survives long idle periods between cycles. The Y return should be routed to tank without back pressure.

Manufacturer

Bosch Rexroth supplies this valve under material number R901510427, product family 4WRTE. NBR seals, HL hydraulic fluid.