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Plenty Mirrlees

P-Serie (Marine)

Ballast Pump · Pumps

Technical data from manufacturer or class sources · not yet verified by a person
100-2500 m³/hCapacity
Sea water/ballastMedium

This is a horizontal centrifugal pump designed for maritime applications. Plenty Mirrlees produced the P-Serie (Marine) pumps, which were manufactured between 1960 and 2000, with approximately 90 different variants. The pumps are capable of handling seawater or ballast, with a flow range of 100 to 2500 cubic meters per hour and a head range of 10 to 80 meters. They are available in several nominal pipe sizes, ranging from 80 to 300 millimeters. The pumps feature a cast iron construction with a bronze impeller and adhere to British marine standards. Power is supplied either by an electric motor or a steam turbine. While these pumps are no longer in active production, UK specialist workshops continue to service the installed base. The legacy nature of the equipment means that repairs often involve refurbishment and the sourcing of parts through UK specialist refurbishers. Common issues encountered with these pumps include aged mechanical seals, bearing wear, impeller wear or corrosion, and casing erosion.

Specifications

Technical data.

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Pump TypeHorizontal centrifugal pump (UK heritage)
Drive TypeElectric or steam turbine
ConstructionCast iron, bronze impeller, British marine standard
Service

Service notes.

What our service work and the manufacturer documentation say about keeping this model running.

Legacy — refurbishment-only service. UK specialist workshops still service installed base.

Inspection

Common failures & inspection points

Spares

Replacement Parts

Spare parts notes

Plenty Mirrlees legacy parts via UK specialist refurbishers.

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