Proportional Directional Valve 4WRZE25W6-220-7X/6EG24N9K31/F1D3V - Bosch Rexroth R901040919

A fully external pilot circuit makes control behaviour independent of main pressure. This size 25 valve uses exactly that arrangement, meters 220 l/min nominal flow up to 350 bar and routes both pilot feed and pilot return through separate lines.

Benefits

• 220 l/min nominal flow against a valve maximum of 870 l/min
• External pilot feed and external return give steady pilot pressure regardless of a load pressure up to 350 bar
• Spool symbol W6 with three switching positions across four ports
• Command value 4-20 mA, on-board electronics at 24 VDC through a 7-pole connector (6 + PE)
• FKM seals released for HL hydraulic fluid, mass 50 kg as stated by the manufacturer

Application

The arrangement suits plants with a central pilot pump, such as press lines, foundry equipment and test fields. Because neither pilot feed nor pilot return depends on the main circuit, step response stays reproducible even under sharply changing load. The subplate pattern follows ISO 4401-08-08-0-05.

Manufacturer

Bosch Rexroth lists the valve under material number R901040919. Step response, characteristic curves and installation dimensions follow data sheet RE 29115, plus RE 07600-B.