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If a back pressure valve sits in the return, pressure is present there permanently and pilot control needs a drain of its own. The 4WRZ25E325-7X/6EG24EK4/D3M drains through Y and taps internally. 325 l/min nominal flow, 18.2 kg weight.
Proportional Directional Valve 4WRZ25E325-7X/6EG24EK4/D3M - Bosch Rexroth R901266853
BOSCH REXROTH
Original product
Net price (excl. VAT)
€3,934.22
Item
BRR-R901266853
Manufacturer no.
R901266853
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Brand new
Specialist dealer since 2009
Original product
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Product data
Manufacturer no.R901266853
Country of originGermany
ConditionNew
Artikel
BRR-R901266853
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A back pressure valve in the return keeps the circuit filled but loads the tank channel permanently. The 4WRZ25E325-7X/6EG24EK4/D3M therefore drains its pilot oil through a dedicated Y line, taps it internally through a pressure reducing valve and controls 325 l/min nominal flow.
Benefits
- External pilot drain through Y, the holding pressure in the return does not act on pilot control.
- Internal tapping with pressure reducing valve, an X line is dropped.
- 325 l/min nominal flow, flow up to 870 l/min, spool symbol E in size 25.
- 18.2 kg weight, 350 bar maximum operating pressure, ISO 4401-08-08-0-05 pattern.
- Commanded at 24 VDC through an external amplifier, 7-pole (6 + PE) plug to EN 175201-804.
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 | 325 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 E |
| Operating pressure, max. | 350 bar |
| Size | 25 |
| Seals | NBR |
| Electrical connector | Connector, 3-pole (2 + PE) |
| Type of actuation | Electrical with external electronics |
| Weight | 18.2 kg |
Applications
Back pressure valves in the return are found on plants with a preloaded circuit, for example hydrostatic drives and systems with a filter and cooling loop. The Y line provides an unpressurised drain for the pilot stage there. The working circuit keeps its preload.
Manufacturer
Bosch Rexroth, material number R901266853. Permitted back pressure in the Y line and the reduced pilot pressure are given in data sheet RE 29115, range overview in RE 07600-B.
| Hersteller-Nr | R901266853 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 18.200000 |
| 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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