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A pilot return routed to tank without back pressure relieves the pilot stage when the main circuit builds up pressure. This build returns pilot oil externally, supplies it internally and meters 350 l/min nominal at 350 bar via 4...20 mA.
Proportional Directional Valve 4WRTE25V1-350L-4X/6EG24EK31/F1M - Bosch Rexroth R901093689
BOSCH REXROTH
Original product
Net price (excl. VAT)
€6,328.78
Item
BRR-R901093689
Manufacturer no.
R901093689
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R901093689
Country of originGermany
ConditionNew
Artikel
BRR-R901093689
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Back pressure in the tank line disturbs the pilot stage of a closed-loop valve. Here the pilot oil return runs externally and therefore without back pressure, while the supply stays internal. Nominal flow is 350 l/min.
Benefits
- External pilot return keeps the pilot stage free of main-circuit back pressure
- Internal supply, so only one extra line is needed on the manifold
- Nominal flow 350 l/min, up to 870 l/min through the valve at 350 bar
- Internal spool position feedback with a linear characteristic
- Command value 4...20 mA, V1 spool
- Weight 17.9 kg, 7-pole (6 + PE) connector to EN 175201-804
Technical data
| Connection diagram | ISO 4401-08-08-0-05 |
| Max. flow | 870 l/min |
| Product family | 4WRTE |
| Type of connection | Subplate mounting |
| Nominal flow | 350 l/min |
| Supply voltage | 24 VDC |
| Connectivity | Analog, command value 4...20 mA |
| 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 V1 |
| Operating pressure, max. | 350 bar |
| Size | 25 |
| Seals | NBR |
| Electrical connector | Connector, 7-pole (6 + PE) |
| Type of actuation | Electrical with on-board electronics |
| Weight | 17.9 kg |
Application
The variant is used in plants with long return runs and coolers in the tank circuit, such as rolling mills and large presses. The on-board electronics handle position control and output stage. HL is the intended hydraulic fluid, sealed with NBR.
Manufacturer
Bosch Rexroth lists this valve under material number R901093689.
| Hersteller-Nr | R901093689 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 17.900000 |
| 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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