Proportional Directional Valve 4WRZE32W8-360-7X/6EG24EK31/F1D3M - Bosch Rexroth R901056431

Plants with long return manifolds and coolers build a noticeable back pressure in the tank channel, and an internal pilot drain passes it straight to the pilot stage. The 4WRZE32W8-360-7X/6EG24EK31/F1D3M takes its pilot oil internally and drains it through a dedicated Y line, at 360 l/min nominal flow and 350 bar operating pressure.

Key benefits

• External pilot drain on its own Y line - back pressure in the main return is kept away from the pilot stage.
• Internal pilot supply - an X line is not required because pilot oil comes from the main circuit.
• 360 l/min nominal flow at 41 kg - one of the lighter valves of this series in size 32.
• Command value 4...20 mA - a current interface with high noise immunity, processed in the on-board electronics.
• Spool symbol W8, 3 switching positions, 4 ports - subplate mounting to ISO 4401-10-09-0-05.
• Pressure reducing valve in the pilot circuit - holds pilot pressure in range even at 350 bar system pressure.

Applications

The configuration suits plants with high return resistance, for example large filter and cooling circuits on press hydraulics or test rigs with long pipe runs. The external drain calls for a dedicated line led to tank without pressure. NBR seals and hydraulic fluid HL are specified, and EMC is covered by UKCA SI2016/1091.

Manufacturer

Made by Bosch Rexroth, material number R901056431. Permissible drain pressure and all curves are stated in data sheet RE 29115, supplemented by RE 07600-B.