The ballast pump in a ship is used to transfer seawater in and out of ballast tanks to maintain stability and trim.

It ensures proper weight distribution, preventing the vessel from listing or capsizing during loading, unloading, or rough seas.

Marine ballast pumps are typically centrifugal or reciprocating types, designed for high efficiency and corrosion resistance.

Ballast Pump in Ship, Marine Pumps Key Specifications:

Size: Typically ranges from 50 mm to 500 mm discharge diameter.

Grade: Marine-grade compliance (ABS, DNV, LR, or other classification standards).

Viscosity: Suitable for fluids with viscosity up to 1,000 cSt (depending on pump type).

Buoyancy: Not applicable (submerged or deck-mounted operation).

Material: Cast iron, bronze, stainless steel (316L), or duplex steel for corrosion resistance.

Flow Rate: 50 m³/h to 3,000 m³/h (varies by pump size and application).

Pressure Rating: 6 to 16 bar (dependent on system requirements).

Power Source: Electric motor or diesel-driven (100 kW to 1,500 kW).

Sealing: Mechanical seals or gland packing for leak prevention.

Temperature Range: -20°C to +120°C (subject to material limits).

Compliance: IMO, MARPOL, and SOLAS regulations for ballast water management.