Proportional Directional Valve 4WRTE16W8-150L-4X/6EG24EK31/F1M - Bosch Rexroth R901423131

With a pre-load valve in the return line, pressure sits permanently on T and the pilot stage would have to work against it. The 4WRTE16W8-150L-4X/6EG24EK31/F1M therefore drains through a dedicated external line and meters 150 l/min nominal flow at operating pressures up to 350 bar.

Benefits

• Internal pilot oil supply with external pilot oil return, unpressurised drain despite pre-load in the return line.
• 150 l/min nominal flow, maximum flow 460 l/min in size 16.
• 4...20 mA command value on the on-board electronics, 24 VDC on a 7-pole (6 + PE) connector to EN 175201-804.
• Spool symbol W8 with a linear characteristic curve, 3 switching positions and 4 ports.
• Operating pressure up to 350 bar, connection diagram ISO 4401-07-07-0-05, 11.26 kg weight.

Applications

The valve is used in circuits carrying return line pre-load, as found on overrunning loads and in systems fitted with prefill valves. Its own drain line keeps the null position of the pilot stage independent of that pre-load. At 150 l/min the axis stays quiet and easy to control.

Manufacturer

Bosch Rexroth, material number R901423131. The type designation 4WRTE16W8-150L-4X/6EG24EK31/F1M states size 16, spool symbol W8, 150 l/min nominal flow and series 4X.