Proportional Directional Valve 4WRZE25W9-325-7X/6EG24N9ETK31/F1V - Bosch Rexroth R978909721

A current signal does not sag over distance. The 4WRZE25W9-325-7X/6EG24N9ETK31/F1V builds on that: a 4...20 mA command value, 325 l/min nominal flow in size 25 and operating pressure up to 350 bar. Pilot oil is taken internally and returned internally, and no pressure reducing valve is fitted.

Benefits

• 325 l/min nominal flow, maximum flow of the size 870 l/min.
• 4...20 mA command value on 24 VDC, tolerant of voltage drop on long cables.
• Internal pilot oil supply and internal pilot oil return save extra control lines.
• Concealed manual override moves the axis when the electrics are off.
• FKM seals, ISO 4401-08-08-0-05 interface, 20.58 kg, UKCA conformity.

Technical data

Applications

Size 25 at 325 l/min covers medium presses, steelworks power units and test rigs. Because no pressure reducing valve is built in, the system has to provide a pilot pressure that is sufficient and at the same time limited. The concealed manual override helps during commissioning and fault finding.

Manufacturer

Bosch Rexroth, material number R978909721. The type code 4WRZE25W9-325-7X/6EG24N9ETK31/F1V states size 25, spool symbol W9, 325 l/min nominal flow and a 4...20 mA command value. Further details are given in data sheets RE 29115 and RE 07600-B.