Proportional Directional Valve 4WRTE27W6-500L-4X/6EG24EK31/A1M - Bosch Rexroth R901467071

Long return lines and filters build back pressure that can upset a pilot stage. The 4WRTE27W6-500L-4X/6EG24EK31/A1M therefore routes its pilot return to the outside while the supply stays internal. It controls 500 l/min nominal flow with a ±10 V command value.

Benefits

• External pilot return keeps the control circuit clear of back pressure in the tank line.
• Internal pilot oil supply saves the second feed line to the valve.
• Nominal flow 500 l/min and maximum flow 1000 l/min in size 27.
• Command value ±10 V, on-board electronics, 3 switching positions with spool symbol W6.
• Connection diagram ISO 4401-08-07-0-05, operating pressure up to 270 bar, 4 ports.
• 7-pole connector (6 + PE) according to EN 175201-804 at 24 V DC, NBR seals, 19.5 kg.

Applications

A typical place is an injection moulding machine or a press whose return runs through cooler and filter. The separate pilot drain keeps the pilot stage clean even when tank pressure fluctuates. Spool position feedback inside the valve holds the motion profile steady.

Manufacturer

Bosch Rexroth, material number R901467071. The type code 4WRTE27W6-500L-4X/6EG24EK31/A1M states size 27, spool symbol W6, 500 l/min nominal flow and the external pilot return.