Proportional Directional Valve 4WRKE25E350L-3X/6EG24TK31/A1D3M - Bosch Rexroth R900737628

Some power units have a pilot pump but no spare drilling for a pilot return. The 4WRKE25E350L-3X/6EG24TK31/A1D3M takes pilot oil from outside and drains it internally into the tank channel, at 350 l/min nominal flow and 350 bar operating pressure.

Key benefits

• External pilot oil supply with internal return, only one additional port has to be provided.
• 350 l/min nominal flow, maximum flow 870 l/min, size 25.
• Spool symbol E, 3 switching positions and 4 ports, connection pattern ISO 4401-08-08-0-05.
• Plus minus 10 V command, 24 VDC supply, electronics integrated in the valve.
• Internal spool position feedback, linear characteristic curve, 17.9 kg weight.
• NBR seals for HL hydraulic fluid, 7-pole connector (6 + PE) to EN 175201-804.

Applications

The variant suits rebuilds of existing valve stations where the pilot supply is already piped but another return cannot be fitted. At 350 l/min nominal flow it serves main cylinders on presses and hoists. Pilot pressure stays independent of working pressure because it comes from a circuit of its own.

Manufacturer

Bosch Rexroth, material number R900737628. The type code 4WRKE25E350L-3X/6EG24TK31/A1D3M states size 25, spool symbol E, 350 l/min nominal flow and series 3X.