Proportional Directional Valve 4WRZE25W8-325-7X/6EG24N9EK31/F1M - Bosch Rexroth R900746609

Long cable runs between the control cabinet and the manifold do not suit a voltage command signal. The 4WRZE25W8-325-7X/6EG24N9EK31/F1M accepts a 4...20 mA command value and turns it into 325 l/min nominal flow through its on-board electronics, with up to 870 l/min available at peak.

Benefits

• Nominal flow 325 l/min and max. flow 870 l/min in size 25
• Current command value 4...20 mA, tolerant of voltage drop on long control lines
• Operating pressure up to 350 bar, mounting pattern ISO 4401-08-08-0-05 with four ports
• Internal pilot oil supply and external pilot oil return, no pressure reducing valve in the pilot circuit
• On-board electronics at 24 VDC, connector 7-pole (6 + PE) according to EN 175201-804
• Concealed auxiliary actuation, NBR seals for HL hydraulic fluid, 20.14 kg

Applications

Intended for presses, injection moulding machines and test rigs where a cylinder moves under speed or position control at high flow. The current interface suits installations in which the control line runs several metres alongside power cables. Because pilot oil leaves the valve externally, the manifold has to provide a Y channel. The concealed auxiliary actuation lets the axis be moved with the electrics switched off.

Manufacturer

Bosch Rexroth, material number R900746609. Characteristic curves, pilot oil demand and installation dimensions are given in the data sheet Proportional directional valve, pilot-operated (RE 29115) and in the overview Hydraulic valves and hydro- (RE 07600-B).