Proportional Directional Valve 4WRTE25E1-220P-4X/6EG24EK31/A1M - Bosch Rexroth R900747513

A separate pilot circuit is frequently absent, while a separately routed return is usually there. The 4WRTE25E1-220P-4X/6EG24EK31/A1M uses exactly that combination, taking pilot oil internally from the pressure port and discharging it externally, at 220 l/min nominal flow and up to 350 bar.

Benefits

• Internal pilot supply saves one feed line, while the external return keeps back pressure off the pilot circuit.
• 220 l/min nominal flow with spool symbol E1 and a fine control range across 3 switching positions.
• Internal spool position feedback makes command and flow reproducible.
• Plus or minus 10 V command into on-board electronics, 24 VDC through a 7-pole connector (6 + PE) to EN 175201-804.
• Mounting pattern ISO 4401-08-08-0-05, NBR seals for HL fluid, 17.7 kg.

Applications

The valve controls feed and infeed axes in plants whose return line is loaded by coolers or filters. Pilot pressure comes out of working pressure, which therefore has to stay applied. At 220 l/min the valve sits in the middle of a range that reaches 870 l/min.

Manufacturer

Bosch Rexroth, material number R900747513. In the type code 4WRTE25E1-220P-4X/6EG24EK31/A1M the letter E marks internal pilot supply with external return, alongside spool symbol E1 and 220 l/min nominal flow.