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If the tank sits above the valve, the oil column presses on the return line permanently. The 4WRZ25W8-220-7X/6EG24N9EK4/M avoids that with an external pilot drain and internal supply. 220 l/min nominal flow, 20.04 kg weight.
Proportional Directional Valve 4WRZ25W8-220-7X/6EG24N9EK4/M - Bosch Rexroth R900972499
BOSCH REXROTH
Original product
Net price (excl. VAT)
€4,056.53
Item
BRR-R900972499
Manufacturer no.
R900972499
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R900972499
Country of originGermany
ConditionNew
Artikel
BRR-R900972499
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A raised tank or a long rising return line creates constant counter pressure that pilot control should not see. The 4WRZ25W8-220-7X/6EG24N9EK4/M therefore drains pilot oil through a separate Y line and controls 220 l/min nominal flow.
Benefits
- Separate Y line for pilot oil, static counter pressure of the return column does not act on pilot control.
- Pilot supply taken internally from the main circuit, piping effort stays low.
- 220 l/min nominal flow, up to 870 l/min flow, spool symbol W8 in size 25.
- 20.04 kg weight, 350 bar maximum operating pressure, three switching positions and four ports.
- Concealed auxiliary actuation, supplied at 24 VDC through a 7-pole (6 + PE) plug.
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 | NBR |
| Electrical connector | Connector, 3-pole (2 + PE) |
| Type of actuation | Electrical with external electronics |
| Weight | 20.04 kg |
Applications
This layout appears on machines whose power unit stands lower than the manifold, for example lift tables and platforms. The Y line takes pilot oil to the tank over a short path without pressure. Supply and control remain untouched by it.
Manufacturer
Bosch Rexroth, material number R900972499. Permitted back pressure and pilot data are given in data sheet RE 29115, supplemented by RE 07600-B.
| Hersteller-Nr | R900972499 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 20.040000 |
| GPSR Herstellerdaten | Bosch Rexroth AG, Zum Eisengießer 1, DE-97816 Lohr am Main, www.boschrexroth.com |
| Artikel-Authentizität | Original product |
| Artikelzustand | New |
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