"> DESMI NSL Serie
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DESMI

NSL Serie

DESMI NSL is the workhorse vertical in-line ballast and cooling-water pump on modern bulk carriers, container vessels and tankers. Modular design saves space and reduces maintenance time. Standard equipment on many newbuilds since 1990.

50-2500 m³/h
Capacity
Sea water/fresh water/ballast
Medium

Components & Design

Component data being added…

Technical Data

pump type Vertical in-line modular centrifugal pump
variant count approx 180
period start year 1990
drive type Electric
construction Modular cast iron/bronze, replaceable wear rings

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Common failures & inspection points

●Mechanical seal leakage from misalignment after motor service
●Bearing wear from vibration coupled through pipework
●Impeller corrosion/erosion in seawater service after 10+ years
●Casing wear ring clearance increase

Service & Maintenance

Modular design — most service possible without removing pipework. Mechanical seal inspection every 8000h. Bearing replacement at 20000h. Annual vibration analysis.

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Replacement Parts

Standard cartridge seal, modular bearing housing, wear rings, shaft sleeve. DESMI standard parts widely stocked at chandlers.
Equipment Model #37451 · ✓ still in production