Proportional Directional Valve 4WRZ25W6-220-7X/6EG24N9K4/D3V - Bosch Rexroth R900957450

A manifold already routes pilot oil elsewhere, so the directional valve should be fed externally as well. The 4WRZ25W6-220-7X/6EG24N9K4/D3V fits that layout, meters 220 l/min of rated flow and carries spool symbol W6.

Benefits

• Rated flow of 220 l/min in size 25, with up to 870 l/min across the valve.
• External pilot oil supply and external pilot oil return on the pilot-operated main stage.
• Spool symbol W6 with three switching positions across four ports.
• Wiring through a 7-pole connector (6 + PE) to EN 175201-804, 24 V DC supply.
• 20.46 kg, FKM seals, operating pressure up to 350 bar, connection diagram ISO 4401-08-08-0-05.

Applications

The arrangement suits machines where several large valves are fed from the same pilot line. At 350 bar of operating pressure there is reserve for load peaks. The FKM seals suit operation with HL hydraulic fluid at raised temperature.

Manufacturer

Bosch Rexroth lists this valve under material number R900957450, product family 4WRZ(E). The complete characteristic curves and limits are given in datasheet Proportional directional valve, pilot-operated (RE 29115) and Hydraulic valves and hydro- (RE 07600-B).