Proportional Directional Valve 4WRZE25W6-220-7X/6EG24N9TK31/A1D3M - Bosch Rexroth R900749456

In hot, contamination-prone plants pilot oil is often taken from a clean auxiliary circuit. That is what this version with external pilot supply and internal pilot return is built for, metering 220 l/min nominal at 350 bar.

Benefits

• External pilot oil supply allows filtered pilot oil independent of the main circuit
• Internal pilot oil return saves a separate line back to the tank
• Nominal flow 220 l/min, up to 870 l/min through the valve at 350 bar
• Command value ±10 V straight into the on-board electronics, no separate amplifier card
• W6 spool, three switching positions, four ports
• Subplate to ISO 4401-08-08-0-05, weight 20.56 kg

Application

The version matches continuous casting lines, forging presses and steelworks cranes where the main circuit runs under heavy load. A concealed auxiliary actuation moves the axis if a fault occurs. Operation is on HL hydraulic fluid with NBR seals at 24 VDC.

Manufacturer

Bosch Rexroth lists this valve under material number R900749456. The manufacturer datasheet with characteristic curves, port pattern and installation dimensions is available in the download area of this page.