DesFuel - Deepwell Pump (RSL)
The world's first marine fuel pump purpose-built for fuel flexibility
The DesFuel Deepwell Pump is purpose-built for alternative fuel flexibility, handling LNG, ammonia, methanol, and LPG without modification. With its motor, coupling, and bearings placed outside the tank, it reduces boil off, improves accessibility, and allows service without gas freeing. A sealed magnetic coupling ensures safe handling of hazardous fuels, while the air cooled motor and oil lubricated bearing eliminate the need for fuel filters.
Significant benefits
- Essential components are placed outside the fuel tank for easy access, improving reliability, reducing added heat, and making them easily accessible to help minimize maintenance costs.
- Maintenance and repair without gas-freeing, as the pump and drive shaft assembly can be removed, repaired, and reinstalled separately from the fuel tank when caisson and foot valve used.
- No need for fuel filters, which eliminates the risk and cost of clogging, significantly improving uptime and efficiency.
- Optimized for low NPSHr, improving usability at lower fuel tank levels
- Ready for your vessels, coming in five sizes to suit your vessel, with a wide operating window that minimizes boil-off gas and compatibility with alternative fuels without further modification.
- Integrates with your process, with simple installation and broad fuel gas system compatibility, plus global support that includes all documentation, warranties, and aftersales service.
Applications
The DesFuel Deepwell Pump is purpose-built to handle alternative fuels
without modification, making it ideally suited for:
- LNG
- Methanol
- Ammonia
- LPG
| Pump | RSL 20 | RSL 25 | RSL 32 | RSL 40 | RSL 50 |
| Capacity m3/hr | 0,5-6 | 1-13 | 2-24 | 5-45 | 7-80 |
| Max. Head per stage [mic]* | 20 | 58 | 58 | 58 | 58 |
| Max. No of stage | 9 | 9 | 9 | 9 | 9 |
| Max. tank pressure [bar]* | 20 | 20 | 20 | 20 | 20 |
| Max. Outlet pressure [bar] ** | 40 | 55 | 55 | 55 | 55 |
| Max. Motor size [KW] ** | 9 | 19 | 57 | 100 | 124 |
| Mag-drive Max. Torque [Nm] | 60 | 150 | 280 | 280 | 280 |
| Nominal speed [RPM]*** | 3500 | 3500 | 3500 | 3500 | 3500 |
(*) This represents the maximum performance of each impeller stage. The static pressure rating of the pump will be a different value.
(**) Based on the maximum stages and a specific gravity (SG) of 800.
(***) The actual maximum speed varies depending on several factors, including the maximum flow rate, maximum cargo density and viscosity, maximum intermediate shaft length, actual number of pump stages, and impeller diameters.
| Pump Size [CD1] [BK2] | RSL 20 | RSL 25-50 |
| Caisson assembly outer dimension (mm) | 284 | 340 |
| Caisson pipe dimension (mm) | Ø219 | Ø273 |
| Dome Flange (EN1092-1) | DN300, PN25 | DN300, PN25 |
| Foot valve max. Flow (m3/h) | 10 | 80 |
[CD1] Larger pumps are also installed in a DN250 (Ø273)
[BK2] With revised foot-valve (july) there should be close to zero residual fuel left
DesFuel - Deepwell Pump (RSL)
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