Proportional Directional Valve 4WRZE25W8-220-7X/6EG24N9K31/A1D3M - Bosch Rexroth R901070268

Hydraulic drives in water engineering often sit far from the power unit and use a dedicated pilot circuit. The 4WRZE25W8-220-7X/6EG24N9K31/A1D3M is built for that case, taking pilot oil from outside and draining it outside while metering 220 l/min nominal flow at 350 bar.

Benefits

• Both pilot paths external, matching power units placed away from the drive.
• Nominal flow 220 l/min is enough for slow large cylinders with high force.
• Spool symbol W8 holds the load in the centre position as defined by the circuit.
• Command value ±10 V with on-board electronics, supply 24 V DC.
• ISO 4401-08-08-0-05, 350 bar operating pressure, 20.62 kg, UKCA to SI2016/1091.

Applications

The valve drives lock gates, weir flaps and lifting sluices as well as comparable hydraulic steel structures. The concealed manual override allows emergency motion if control voltage fails. The dedicated pilot circuit stays unaffected by the long pipe run to the cylinder.

Manufacturer

Bosch Rexroth, material number R901070268. Datasheet RE 29115 describes the pilot-operated proportional directional valve, RE 07600-B gives the range overview.