Proportional Directional Valve 4WRDE25V1-350L-6X/MPY/24F1 - Bosch Rexroth R901529898

High return pressure in the tank gallery disturbs pilot control more than the characteristic curve suggests. The 4WRDE25V1-350L-6X/MPY/24F1 takes pilot oil internally and drains it separately through Y while metering 350 l/min at 350 bar from a 4...20 mA current command.

Benefits

• Separate pilot oil drain through Y keeps the pilot circuit clear of back pressure in the tank gallery.
• Internal pilot oil supply saves the X line, only the Y drain is added.
• 350 l/min nominal flow at 350 bar, V1 spool, body limit 870 l/min.
• 4...20 mA current command through a 7-pole connector (6 + PE) to EN 175201-804.
• 17.5 kg on ISO 4401-08-08-0-05, NBR seals, 24 V DC supply.

Applications

The layout suits test rigs and presses whose return flow passes through cooler and filter and therefore builds up back pressure. Even with several axes working in parallel the zero point stays stable. HL hydraulic fluid and a 24 V DC supply match common plant standards.

Manufacturer

Bosch Rexroth, type designation 4WRDE25V1-350L-6X/MPY/24F1, material number R901529898, product family 4WRDE. The electronics sit inside the unit, so a separate amplifier card is unnecessary.