Proportional Directional Valve 4WRZ25W9-325-7X/6EG24K4/D3M - Bosch Rexroth R900746671

A pilot circuit fed from full system pressure quickly exceeds the value the pilot stage is rated for. The 4WRZ25W9-325-7X/6EG24K4/D3M therefore carries a pressure reducing valve, controlling 325 l/min nominal flow at a maximum operating pressure of 350 bar.

Benefits

• Pressure reducing valve in the pilot stage, fixed pilot pressure at a system pressure of up to 350 bar
• External pilot oil supply, external pilot oil return
• Nominal flow 325 l/min, maximum flow 870 l/min
• Spool symbol W9, 3 switching positions, 4 ports to ISO 4401-08-08-0-05
• Control by external electronics at 24 VDC, 7-pole connector (6 + PE) to EN 175201-804
• NBR seals for HL hydraulic fluid, weight 18.2 kg

Technical data

Application

The valve drives large cylinder axes as well as motor axes in presses, rolling mills and test rigs. Because the pilot stage receives its own reduced pressure, response stays the same while system pressure moves. Size 25 to ISO 4401-08-08-0-05 fits common manifolds.

Manufacturer

Bosch Rexroth, material number R900746671, type designation 4WRZ25W9-325-7X/6EG24K4/D3M. Further values are given in the data sheet Proportional directional valve, pilot-operated (RE 29115) and Hydraulic valves and hydro- (RE 07600-B).