Cargo Pumps

Deepwell Cargo Pumps for LPG, LEG, Chemical and CO₂ Tankers

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. The pump consists of three main components: base arrangement, pipe and pump cylinder. The cylinder is designed with a variable number of impellers and casings to meet the required head and capacity.

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Product information

The pipe stack consists of a number of intermediate pipes in which the cargo is transported to the outlet flange of the base arrangement. The intermediate shaft, which drives the impellers, is placed in the centre of the pipe stack. The shaft is supported by guide bearings for each 1.2 metres / 4 ft, which is also the length of the intermediate pipes in the pipe stack. The bearings are made of carbon and are lubricated by the cargo.

Materials:

Stainless steel AISI304/304L for cargo temperatures down to -165°C.

Capacities: Up to 1200 m3/h / 5283 US gpm
Pressure: Up to 250 mLC / 820 ftLC
Temperatures: Down to -165oC / -265oF

Available in various sizes and can be customized

Well-proven double shaft seal with self-adjusting pressure booster (and optional alarm) 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
Automatic cool down monitoring (option)
Static seal for maintenance access to all wear parts outside the tank without gas freeing the tank
Cast pump design for improved efficency

Available for vessel types:

LPG carriers: fully or semi refrigerated, fully pressurized
LNG carriers and bunker vessels
NH3/ammonia carriers and bunker vessels
Ethylene carriers
CO2 carriers
Onboard carbon capture offloading pump

NDW cargo pumps can be paired with NDB booster pumps to increase total pressure, with multiple sizes available for optimal performance in demanding operations.

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