Proportional Directional Valve 4WRZE25W8-220-7X/6EG24N9K31/F1D3V - Bosch Rexroth R900939923

During commissioning it is worth a lot to be able to display and limit pilot pressure separately. This size 25 build routes pilot oil supply and return to the outside, works at 220 l/min nominal flow up to 350 bar and takes its command value as an impressed current of 4 to 20 mA.

Benefits

• External supply and external return, so pilot pressure can be measured and set on its own.
• 220 l/min nominal flow, flow through the valve up to 870 l/min.
• Command value 4 to 20 mA, no signal loss on long cables to the control room.
• Operating pressure up to 350 bar, connection diagram ISO 4401-08-08-0-05, 4 ports.
• Spool symbol W8, 3 switching positions, 24 VDC supply, weight 20.78 kg.

Applications

The build suits plants that are tested and documented regularly, such as test benches and installations subject to acceptance inspection. The pilot circuit gets its own filter, its own measuring point and its own protection. Both external lines belong in the piping layout.

Manufacturer

Bosch Rexroth, material number R900939923. Product family 4WRZ(E), pilot-operated spool valve with on-board electronics and FKM seals. Further details are given in data sheets RE 29115 and RE 07600-B.