Proportional Directional Valve 4WRZ25W8-220-7X/6EG24N9EK4/M - Bosch Rexroth R900972499

A raised tank or a long rising return line creates constant counter pressure that pilot control should not see. The 4WRZ25W8-220-7X/6EG24N9EK4/M therefore drains pilot oil through a separate Y line and controls 220 l/min nominal flow.

Benefits

• Separate Y line for pilot oil, static counter pressure of the return column does not act on pilot control.
• Pilot supply taken internally from the main circuit, piping effort stays low.
• 220 l/min nominal flow, up to 870 l/min flow, spool symbol W8 in size 25.
• 20.04 kg weight, 350 bar maximum operating pressure, three switching positions and four ports.
• Concealed auxiliary actuation, supplied at 24 VDC through a 7-pole (6 + PE) plug.

Applications

This layout appears on machines whose power unit stands lower than the manifold, for example lift tables and platforms. The Y line takes pilot oil to the tank over a short path without pressure. Supply and control remain untouched by it.

Manufacturer

Bosch Rexroth, material number R900972499. Permitted back pressure and pilot data are given in data sheet RE 29115, supplemented by RE 07600-B.