Proportional Directional Valve 4WRZ25E220-7X/6EG24N9ETK4/D3M - Bosch Rexroth R900968779

Taking an existing X line out of service saves fittings and inspection work. The 4WRZ25E220-7X/6EG24N9ETK4/D3M makes that possible because its pressure reducing valve limits the internally tapped control pressure, and it controls 220 l/min nominal flow.

Benefits

• Internal pilot tapping despite high system pressure, the built-in pressure reducing valve limits pilot pressure.
• Internal return, the Y line is dropped as well.
• 220 l/min nominal flow, flow up to 870 l/min, spool symbol E in size 25.
• 20.46 kg weight, 350 bar maximum operating pressure, ISO 4401-08-08-0-05 pattern.
• Concealed auxiliary actuation, commanded at 24 VDC through an external amplifier.

Applications

On modernisations of older power units the manifold can be simplified this way without redesigning the axis. Four ports and three switching positions match the familiar connection pattern. Back pressure in the tank channel has to be checked before the conversion, since the return runs internally.

Manufacturer

Bosch Rexroth, material number R900968779. Back pressure limits and the set pilot pressure are given in data sheet RE 29115, supplemented by RE 07600-B.