Proportional Directional Valve 4WRZE16W6-180-7X/6EG24N9EK31/A1D3M - Bosch Rexroth R901428551

A separately routed pilot oil return keeps pressure surges in the tank gallery away from the pilot valve. That is exactly how this size 16 proportional directional valve is built: pilot oil taken internally, return routed externally, ±10 V command value, 180 l/min nominal flow.

Key benefits

• External pilot oil return protects the pilot stage from pressure peaks in a shared tank gallery.
• Internal pilot oil supply saves the extra pressure line to the control circuit.
• 180 l/min nominal flow and 460 l/min peak flow at 350 bar operating pressure.
• A signed ±10 V command value covers both directions of travel and is handled by the on-board electronics.
• 12.56 kg, spool symbol W6, NBR seals, ISO 4401-07-07-0-05 connection pattern.

Applications

This combination is chosen when several valves share one tank gallery and back pressure builds up there. Applications include press drives, hoists and test rigs with changing loads. The external return needs its own line to tank, kept as short as possible.

Manufacturer

Bosch Rexroth, material number R901428551, product family 4WRZ(E). Data sheet RE 29115 states the permitted return pressure and characteristic curves, RE 07600-B gives the range overview.