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Proportional Directional Valve 4WRZ25W8-220-7X/6EG24N9TK4/D3V - Bosch Rexroth R901239775
If pilot pressure exceeds what the pilot stage may take, a pressure reducing valve belongs in front of it. The 4WRZ25W8-220 brings one along, runs on external supply with internal return and meters 220 l/min. Spool symbol W8.
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Description
When the available pilot pressure is higher than the pilot stage tolerates, a pressure reducing valve belongs in front of it. The 4WRZ25W8-220-7X/6EG24N9TK4/D3V carries one, is fed externally and drains its return internally.
Benefits
- Pressure reducing valve in the pilot stage, external supply, internal return
- Nominal flow 220 l/min, maximum flow 870 l/min
- Spool symbol W8, three switching positions across four ports
- Pilot-operated spool valve with concealed auxiliary actuation
- Maximum operating pressure 350 bar, FKM seals, weight 20.44 kg
Applications
Intended for plants whose pilot pressure supply sits above what the pilot stage tolerates, such as high pressure power units. The internal return saves a line to tank. Control through external electronics, 24 VDC supply.
Manufacturer
Bosch Rexroth, material number R901239775, type 4WRZ25W8-220-7X/6EG24N9TK4/D3V. Design and characteristic curves are in the data sheet Proportional directional valve, pilot-operated RE 29115.
Technical data
| Connection diagram | ISO 4401-08-08-0-05 |
|---|---|
| Max. flow | 870 l/min |
| Product family | 4WRZ(E) |
| Type of connection | Subplate mounting |
| Nominal flow | 220 l/min |
| Supply voltage | 24 VDC |
| Number of switching positions | 3 |
| Hydraulic fluid | HL |
| Number of ports | 4 |
| Electrical connection description | Connector, 7-pole (6 + PE) according to EN 175201-804 |
| Spool symbol | Symbol W8 |
| Operating pressure, max. | 350 bar |
| Size | 25 |
| Seals | FKM |
| Electrical connector | Connector, 3-pole (2 + PE) |
| Type of actuation | Electrical with external electronics |
| Weight | 20.44 kg |
| Manufacturer | Bosch Rexroth |
| Hersteller-Nr | R901239775 |
| GPSR Herstellerdaten | Bosch Rexroth AG, Zum Eisengießer 1, DE-97816 Lohr am Main, www.boschrexroth.com |
| Artikelzustand | New |
| Artikel-Authentizität | Original product |
| Country of Manufacture | Germany |
Downloads
Datasheet
- Datasheet (PDF)
- Directional spool valves, direct operated (RE 23178) EN
- Directional spool valves, pilot-operated (RE 24751) EN
- Proportional directional valve, pilot-operated (RE 29115) EN
- Proportional-Wegeventil, vorgesteuert, ohne elektrische Wegrückführung, mit oder ohne integrierter (RD 29115) DE
- Wege-Schieberventile, direktgesteuert, mit Magnetbetätigung DE
- Wege-Schieberventile, vorgesteuert, mit hydraulischer oder elektro-hydraulischer Betätigung (RD 24751) DE
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