DESMI launches marine fuel pump designed for alternative fuel flexibility

Danish pump manufacturer DESMI has introduced what it calls the world’s first marine fuel pump built specifically for compatibility with multiple alternative fuels.

The new DesFuel Deepwell Pump is designed to handle liquefied natural gas (LNG), ammonia, methanol, and liquefied petroleum gas (LPG), with the aim of helping shipowners and operators adapt to regulatory and market uncertainty surrounding future fuels.

According to the company, the pump is based on technology from its cargo gas pump, which has been in use in the marine industry since 1996. The design has been developed to address the operational and maintenance challenges associated with alternative fuel handling.

Key features include placing essential components outside the fuel tank for easier access and reduced maintenance costs, enabling repairs without the need for gas freeing, and eliminating the use of fuel-based filters. The pump uses air cooling for the motor and oil lubrication for the main bearing instead.

DESMI stated that the design has been optimized with computational fluid dynamics (CFD) tools to achieve very low net positive suction head required (NPSHr), improving usability at lower fuel tank levels. It will be available in five sizes to cover different vessel types and engine loads, with a wide operating window to minimize boil-off gas.

The pump is produced at DESMI’s facility in China, close to shipyards in the region. The company said this setup reduces transport time and emissions and can enable faster contractual approvals and shorter lead times.

DESMI added that the DesFuel Deepwell Pump is supported by its global service network, with local technical support and spare parts availability.