Proportional Directional Valve 4WRZ25E220-7X/6EG24ETK4/D3M - Bosch Rexroth R901035659

An internally supplied pilot stage saves two lines and with them two possible leakage points. The 4WRZ25E220-7X/6EG24ETK4/D3M takes pilot pressure from its own main channel and returns it there, while metering 220 l/min nominal flow in size 25.

Benefits

• Pilot oil supplied and drained internally, the external pilot line and the external drain line are not needed.
• 220 l/min nominal flow, up to 870 l/min peak flow at 350 bar maximum operating pressure.
• Spool symbol E with three switching positions and four ports on the ISO 4401-08-08-0-05 pattern.
• 20.54 kg weight, NBR seals, HL hydraulic fluid for continuous duty on mineral oil.
• Commanded at 24 VDC through a 7-pole (6 + PE) plug to EN 175201-804 by external electronics.

Applications

Typical locations are power units with a compact pipe run, for example on stretching lines or lifting gear. Because pilot supply and drain stay inside the valve, the subplate mounting is enough and no extra piping is required. Plants that already run a dedicated pilot pressure circuit should use the externally supplied version instead.

Manufacturer

Bosch Rexroth, material number R901035659. Characteristic curves, performance limit and installation dimensions are contained in data sheet RE 29115.