Marine pumps are essential for ship operations, including centrifugal pumps for water circulation and fuel transfer. Positive displacement pumps, like gear and piston pumps, handle viscous fluids such as oil and lubricants. Specialized pumps, such as bilge and ballast pumps, manage water removal and stability control onboard vessels.

Marine pumps are categorized into several types, including centrifugal, reciprocating, and gear pumps. Key specifications include:

Size: Ranges from 1 inch to 12 inches in diameter, depending on flow rate requirements.

Grade: Typically complies with marine standards such as ABS, DNV, or Lloyd's Register.

Viscosity: Handles fluids from low viscosity (e.g., seawater) to high viscosity (e.g., fuel oils up to 1000 cSt).

Buoyancy: Designed to operate in submerged or floating conditions, with corrosion-resistant materials for seawater exposure.

Material: Constructed from bronze, stainless steel (316L), cast iron, or reinforced thermoplastics for chemical resistance.

Flow Rate: Varies from 10 GPM to over 5000 GPM, depending on pump type and application.

Pressure Rating: Typically 10 to 300 PSI, with high-pressure models for specialized systems.

Temperature Range: Operates between -20°C to 150°C, with special seals for extreme conditions.

Power Source: Electric, hydraulic, or diesel-driven, with voltage ratings from 24V to 440V.

Seal Type: Mechanical seals or lip seals, often double-sealed for leak prevention.