Industrial assembly line with large orange pumps, likely for fluid handling.

Cargo pumps

Deepwell cargo and booster pumps for liquefied gas carriers and chemical tankers – engineered for efficient, reliable handling of LPG, LEG, CO₂, ammonia, and other demanding cargoes.

  • Well-proven double shaft seal to safeguard against any leakage
  • Easy shipment and assembly at yard
  • Reduced number of impeller stages
  • Possibility to rotate the shaft in counter direction in case of ice-blocking
  • Ease of installation and maintenance
  • State-of-the-art energy efficiency and NPSH requirements

A safe, efficient and reliable

Cargo pump

The NDW pumps from DESMI are energy efficient and well proven for pumping every media from LPG, to LEG over a wide range of chemicals, through to CO₂.

If you start to count and visit cargo ships sailing around the world, you will notice that many DESMI Deepwell pumps are installed and in use. The number of parts and the efficiency of the pumps have been improved based on the operational experiences from our existing pumps and by means of modern design tools and our in-house test facilities.

Worker installs shaft in DESMI pump housing for fluid handling.

Cargo Pump - explainer

 

From its energy-efficient design to its superior suction capabilities, this pump sets new standards for the safe and efficient handling of liquified gases in the marine segment.

 

Watch the video below and discover why DESMI is the go-to choice for shipowners and operators looking for an advanced cargo pump that meets their specific requirements.

Built for demanding cargoes and vessel types

Materials:

  • Stainless steel AISI for cargo temperatures down to -165°C

  • AISI 304 or 316L stainless steel for specialized chemical requirements

 

The DESWELL pumps are available in various sizes and can be
customized to meet the requirements for your ship

 

Performance specifications:

Capacities: 1200 m³/h / 5283 US gpm
Pressure: up to 250 mLC / 820 ftLC
Temperatures: down to -165°C / -265°F

 

Vessel types:

  • Fully refrigerated LPG carriers
  • Semi-refrigerated and fully pressurized gas carriers
  • Ammonia (NH₃) carriers and bunker vessels
  • LNG bunker vessels
  • Ethylene-capable carriers
  • CO₂ carriers and onboard carbon capture systems
  • Chemical tankers transporting aggressive or temperature-sensitive liquids

Cargo pump on ship

Handling difficult applications

 

Transporting aggressive or cryogenic cargoes such as LPG, LEG, ammonia (NH₃), ethylene, CO₂, and various chemicals requires a pump system built for durability, flexibility, and performance. DESMI NDW cargo pumps are engineered to handle some of the most challenging conditions found on gas carriers, chemical tankers, LNG bunker vessels, and onboard carbon capture offloading systems.

Every material and component in our cargo pump design has been carefully selected to resist corrosion and withstand the thermal and chemical stress of today’s most difficult cargo types. Whether the cargo is cryogenic liquid CO₂ at -50°C, liquefied ethylene at -104°C, or ammonia with its corrosive characteristics, DESMI pumps are ready for the task.

As global trade evolves and new cargoes are introduced, we continuously evaluates compatibility across cargo types and vessel requirements. We support shipowners in determining whether existing pump installations can handle future cargo demands - ensuring both safety and operational flexibility for the long term.

Booster capabilities

DESMI also manufactures booster pumps to be
placed on the deck and to support the DESWELL
pump obtaining a higher total pressure of the
cargo, if required by the gas terminal.


The booster pumps are single-stage centrifugal
pumps available in various sizes according to
requirements.


Technical Specifications:
Capacity: 850 m³/h / 3742 gpm
Pressure: up to 150 mLC / 0 - 459 ftLC
Temperature: down to -165°C / -265°F

 

 

 

Cargo pump

Service

Service for gas cargo- and fuel systems

Together with Nordan Marine A/S we offer a full range of services for your gas cargo and booster pumps.
Service counts for both repairs and preventive maintenance.

Workers handling equipment and operations on a large industrial ship at sea.

Global Contacts

DESMI is a global company

Find address and contact information
of our global locations

DESMI headquarters with flags and signage on a sunny day.

Newsletter

Sign up for our newsletter and we'll send you the latest headlines directly to your inbox.