Proportional Directional Valve 4WRZE25E1-220-7X/6EG24N9ETK31/F1D3V - Bosch Rexroth R901060768

An oversized nominal flow costs control quality, because the usable command range shrinks to a few percent of the spool stroke. This build is deliberately rated at 220 l/min and still works with the mounting pattern and the pressure level of size 25, that is up to 350 bar.

Benefits

• 220 l/min nominal flow for finer resolution of the command value over the spool stroke.
• Operating pressure up to 350 bar, with up to 870 l/min flow possible through the valve.
• Internal pilot oil supply and internal return, no additional control-oil lines.
• Spool symbol E1, 4 ports, 3 switching positions, ISO 4401-08-08-0-05.
• Command signal 4 to 20 mA, 24 VDC supply voltage, weight 20.76 kg.

Applications

The valve is well placed on medium-sized cylinder axes, on tool adjustment drives and on test benches running slow ramps. The 4 to 20 mA current command makes wiring to distant terminal boxes uncritical. Internal piloting requires permanent pressure in the circuit.

Manufacturer

Bosch Rexroth, material number R901060768. Pilot-operated proportional directional valve, product family 4WRZ(E), FKM seals, HL hydraulic fluid. Further details are given in data sheets RE 29115 and RE 07600-B.