Proportional Directional Valve 4WRZ25W6-220-7X/6EG24N9EK4/V - Bosch Rexroth R900950174

Back pressure in the return shifts the operating point of a pilot stage. The 4WRZ25W6-220-7X/6EG24N9EK4/V avoids that with its own drain outlet, while still branching pilot oil internally from the main channel.

Benefits

• Pilot oil taken internally, drained externally, return pressure has no influence.
• 220 l/min nominal flow within a maximum flow of 870 l/min.
• Spool symbol W6 with 3 switching positions and 4 ports in size 25.
• 20.04 kg weight, FKM seals, HL hydraulic fluid, 350 bar operating pressure.
• Concealed auxiliary actuation, control at 24 VDC through external electronics.

Applications

The valve is used on plants with a distant tank or a return filter in a shared header. Its separate outlet keeps the characteristic curve steady across the cycle even while other consumers discharge. The valve works without an internal pressure reducing valve.

Manufacturer

Bosch Rexroth, material number R900950174. Characteristic curves, power limit and dimensions appear in data sheet RE 29115, overview in catalogue RE 07600-B.