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Back pressure in the tank line distorts pilot control. This version of the 4WRZE25W9-220 keeps the internal pilot supply but returns pilot oil through an external Y line. 220 l/min nominal flow, size 25, 350 bar, 20.84 kg.
Proportional Directional Valve 4WRZE25W9-220-7X/6EG24N9EK31/A1D3V - Bosch Rexroth R900742999
BOSCH REXROTH
Original product
Net price (excl. VAT)
€5,314.04
Item
BRR-R900742999
Manufacturer no.
R900742999
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R900742999
Country of originGermany
Customs tariff number84812010
ConditionNew
Artikel
BRR-R900742999
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Once back pressure builds in the tank line, an internally returned pilot stage no longer works cleanly. This version of the 4WRZE25W9-220 still draws pilot oil internally from the pressure port but discharges it through an external Y line, at 220 l/min nominal flow.
Benefits
- Internal pilot supply, external pilot return, pilot control stays independent of tank line back pressure.
- 220 l/min nominal flow, up to 870 l/min in size 25.
- Command value plus/minus 10 V into on-board electronics, no external amplifier needed.
- 350 bar operating pressure, FKM seals for hydraulic fluid HL.
- Pressure reducing valve in the pilot stage and concealed auxiliary actuation.
- 20.84 kg weight, connection diagram ISO 4401-08-08-0-05.
Technical data
| Conformity description | UKCA - Electromagnetic compatibility (EMC) SI2016/1091 |
| 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 |
| Conformity | UKCA |
| Supply voltage | 24 V DC |
| Connectivity | Analog, command value ±10 V |
| 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 W9 |
| Operating pressure, max. | 350 bar |
| Size | 25 |
| Seals | FKM |
| Electrical connector | Connector, 7-pole (6 + PE) |
| Type of actuation | Electrical with on-board electronics |
| Weight | 20.84 kg |
Applications
The variant fits systems with long or filtered return lines, such as large presses and test benches where tank pressure rises in operation. The separate Y line is routed straight to tank. Installation is otherwise identical to the internally returned version.
Manufacturer
Bosch Rexroth, material number R900742999, product family 4WRZ(E). Details are given in data sheets RE 29115 and RE 07600-B.
| Hersteller-Nr | R900742999 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 20.840000 |
| Zolltarifnummer | 84812010 |
| GPSR Herstellerdaten | A1-ESD equipment GmbH. Keldersstr. 15, DE-42697 Solingen, www.esd.equipment |
| Artikel-Authentizität | Original product |
| Artikelzustand | New |
| Position sensing | No |
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