DesFuel Deepwell Pump (RSL) The world’s first marine fuel pump purpose-built for alternative fuel flexibility DESMI Make life flow

The industry is ready for alternative fuels – are you? Marine businesses operate in an unpredictable environment. Faced with tightening emissions regulations, fluctuating fuel prices, and uncertainty around which technologies will take hold, shipowners and operators need greater confidence in their investment decisions. Alternative fuels are one of the best ways to minimize a vessel’s environmental footprint and ensure long-term compliance. However, adoption has been limited by legacy fuel pump technologies unable to handle their extreme characteristics and accommodate different fuel types without...

The world’s first marine fuel pump purpose-built for fuel flexibility The new DesFuel Deepwell Pump from DESMI changes the game. As the world’s first marine fuel pump designed from the ground up for alternative fuel flexibility, it is the perfect solution for Fuel Gas System Suppliers, shipowners, and shipyards looking for proven performance, low maintenance requirements, flexibility, timely delivery, and global support. The DesFuel Deepwell Pump, fully compliant with IGF and IGC codes, is optimized for today’s market needs, having been inspired developed directly from DESMI’s DesCargo gas pump,...

Built for what’s next Why the DesFuel Pump Sets a New Standard Designed from day one for alternative fuel flexibility, the DesFuel Deepwell Pump meets the marine industry’s toughest demands – with no need for modifications across LNG, ammonia, methanol, LPG, and more. Its deepwell design simplifies maintenance, cuts downtime, and eliminates the need for gas-freeing. With air-cooled motors and oil-lubricated main bearing, there’s no need for filters – minimizing clogging, costs, and complexity. Optimized for low NPSHr and variable loads, it ensures reliable operation even at low tank levels. Available...

EX motor Bearing temperature sensors included. Suitable for TCS or open-deck installation. Leakage-free magnetic coupling Completely sealed system. Ensures safe handling of hazardous and environmentally sensitive fuels. Designed for demanding conditions. Handles high torques caused by heavy liquids, elevated supply pressures, and increased flow rates. Dual preloaded thrust bearings Oil lubrication for long bearing lifetime. Easy service - 5 years / 25,000 hours. Sensors for temperature and level monitoring Optional EX-rated heater to prevent gas condensation.

Game Changer Significant benefits: Over alternative solutions 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 in tank, which eliminates the risk and cost of clogging, significantly improving uptime and efficiency. Optimized for low NPSHr, improving usability...

Pump size Caisson pipe With foot valve, enables full pump service without gas freeing the tank. Increases structural strength and stability. Patented (patent pending) guide bearing Flexible pipe lengths (500-3,000 mm). Bearings not connected to pipe flanges -simplifies installation & service. Meets API 610 bearing spacing standard.

All fuels, Every Voyage The DesFuel Deepwell Pump is optimized for low NPSHr and works reliably even when tank levels are low. Boil-off gas is minimized as lower minimum flows reduce needed recirculation. The pump adapts to changing engine loads and keeps efficiency high. Built strong, it is ready for the toughest marine challenges. DESMI / New Green Solutions

Guide rods for foot valve Manual control rods. Reliable deck-operated closing. Pump cylinder CFD-optimized design. Configurable with 1–9 pump stages. Efficient fuel handling and performance. Foot valve Patented design (patent pending). Perforated plate strainer (3 mm) prevents large debris – no other filters required. Two sets of piston-ring seals ensure tight closure and redundancy. Vertical side valve design avoids issues with impurities. Manual deck operation for easy service. Allows pump removal without gas freeing the tank. What makes the DesFuel – Deepwell Pump ideally suited for any alternative...

Aftermarket Support Keep all systems running with DESMI global service Make life flow 10 DESMI / New Green Solutions

Call the DESMI Service Hotline round the clock at +45 96 32 81 10 Together with Nordan Marine (a DESMI company) our tailor-made, global services are essential to secure the optimization and long-term performance of your fuel pumps. We focus on ensuring uptime and availability, with the least hassle and in the shortest timeframe. No matter where you are located, we will always be ready at a moment’s notice with the right expertise, spares, and know-how to keep your processes running. Our service team can provide a long list of services on your ship while it is in port or dry dock, for example...

We exist to keep your business flowing DESMI works closely with vessel owners, operators, and shipyards to deliver critical flow processes for diverse marine applications. Our pumps and supporting systems for marine applications, including deepwell cargo pumps, are trusted worldwide for dependability and the lowest total cost of ownership. At DESMI, our focus has never been on discovering what we can do – it’s about pushing the boundaries of what we can do for you. Our class-leading equipment, solutions, and services are designed specifically for your applications and help you contribute to a...