Proportional Directional Valve 4WRZ25W8-220-7X/6EG24N9EK4/D3V - Bosch Rexroth R900948536

Internal pilot supply saves one line, while an external pilot drain still keeps the pilot stage clear of back pressure. That is exactly the combination in the 4WRZ25W8-220-7X/6EG24N9EK4/D3V, at 220 l/min nominal flow in size 25.

Advantages

• 220 l/min nominal flow against a limit of 870 l/min in the main channel.
• Pilot oil taken internally, drained externally, so pilot drain is decoupled from tank line back pressure.
• 20.78 kg mass and spool symbol W8, three switching positions with concealed auxiliary actuation.
• ISO 4401-08-08-0-05 pattern, size 25, rated up to 350 bar operating pressure.
• Connector, 3-pole (2 + PE) for the electrical link, 24 VDC supply.
• 20.78 kg mass, FKM seals, HL grade fluid.

Applications

The version serves lifting gear, injection moulding machines and presses whose tank line builds pressure on every cycle. A separate pilot drain keeps that back pressure from shifting the pilot stage. Pilot supply comes off the main pressure, so no extra pump is required.

Manufacturer

Manufacturer Bosch Rexroth, material number R900948536. Data sheet RE 29115 carries the characteristic curves and installation dimensions.