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Pumps

All pump types in the engine room

25types 271manufacturers 5,575models
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Types in this category.

Every equipment type in Pumps links to full manufacturer and model data, specifications and service notes.

Pump
Pump
A ship's pump is any machine that moves seawater, fuel, lubricating oil or ballast through the hull, built around one of two working principles: centrifugal, relying on continuous flow and impeller speed, or positive displacement, moving a fixed volume per revolution regardless of downstream pressure.
1,406 models
Centrifugal Pump
Centrifugal Pump
A centrifugal pump moves liquid by spinning it outward through an impeller rather than displacing a fixed volume each revolution, which makes it simple and reliable for cooling, ballast and fire duties but the wrong choice for viscous fuel or lube oil transfer, where a positive displacement pump belongs instead.
1,238 models
Screw Pump
Screw Pump
A screw pump moves fuel and lube oil with meshing helical rotors instead of gears or vanes, giving a smooth, low-pulsation flow that tolerates the viscosity swings of heavy fuel far better than a gear pump of the same duty.
481 models
Cargo Pump (Deepwell)
Cargo Pump (Deepwell)
A deepwell cargo pump hangs a vertical multistage centrifugal element down inside the cargo tank itself, with only the drive shaft and motor above deck, avoiding the sealed-motor design that submersible pumps require.
363 models
Self-Priming Pump
Self-Priming Pump
A self-priming pump can evacuate air from its own suction line and start moving liquid without a foot valve or separate priming system, which is exactly why it is the standard choice for bilge, stripping, and dirty water duties where the suction line cannot stay flooded.
315 models
Fire Pump (Main + Emergency)
Fire Pump (Main + Emergency)
SOLAS requires two independent means of pumping seawater into the fire main: a main fire pump and a fully separate emergency pump outside the space that could disable the first. Neither may share a single point of failure with the other.
313 models
Ballast Pump
Ballast Pump
A ballast pump moves seawater into and out of dedicated ballast tanks to control trim, list and draft, and on ships carrying a ballast water management system it must also work against the extra flow resistance of a treatment unit fitted in the line.
248 models
Gear Pump
Gear Pump
A gear pump is a positive-displacement pump that moves a fixed volume of liquid per revolution between meshing gear teeth and the casing wall, giving it a steady flow largely independent of discharge pressure, unlike a centrifugal pump whose output falls as head rises.
245 models
Progressive Cavity Pump
A progressive cavity pump moves fluid with a helical rotor turning inside a matching elastomeric stator rather than with impeller or piston action, which is why it handles sludge, viscous residues and solids-laden fluids that would clog a centrifugal pump or wreck a piston pump's seals.
201 models
Submersible Pump
Submersible Pump
A submersible pump has its motor sealed inside the same housing as the impeller and runs fully immersed in the liquid it moves, avoiding the shaft seal a dry-mounted pump depends on, but making the motor itself the point that fails if the seal lets water in.
166 models
Freshwater Hydrophore Pump
Freshwater Hydrophore Pump
A hydrophore pump charges a closed pressure tank with freshwater and air so cabin and galley taps get steady pressure without the pump cycling on every draw, and its condition decides whether the domestic water system feels reliable or erratic to the crew.
121 models
Fuel Oil Transfer Pump
Fuel Oil Transfer Pump
A fuel oil transfer pump moves fuel between storage, settling and service tanks and has to keep working on heavy fuel oil at viscosities that would stall a centrifugal design, which is why positive displacement types dominate this duty.
113 models
All 25 types
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Also in this category: Bilge Pump (Main + Emergency)
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Manufacturers.

All 271 manufacturers with models in Pumps. Names with a manufacturer page open it; the others open a search across the full library.

All manufacturers
By manufacturer AFRISOWISKASwagelokAlfa Laval S.p.A.MAN Energy SolutionsWärtsiläEndress+HauserABB MarineAlfa LavalMacGregorNovenco MarineCarrier MarineseimiSiemens MarineHeinen & HopmanAll manufacturers
Knowledge

What a Pumps engineer checks first.

A fuel oil transfer pump moves fuel between storage, settling and service tanks at low to moderate pressure and modest flow — its job is inventory management within the tank system, not feeding fuel to an engine under injection pressure. That distinguishes it from fuel injection or booster pumps further down the fuel line: a transfer pump has to handle heavy fuel oil at viscosities that would stall a centrifugal design, so positive displacement types dominate this duty.

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