"> DESMI DESMI NSL 200/135
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DESMI

DESMI NSL 200/135

DESMI DESMI NSL 200/135 is identified in the source list as a centrifugal pump. It is normally installed in an engine room, pump room or machinery-space piping system close to the circuit it serves. Its purpose is to move a continuous liquid flow through shipboard cooling, bilge or other auxiliary systems by converting impeller rotation into fluid pressure and velocity. The existing database record identifies bilge duty for this pump. Compared with positive-displacement pumps, a centrifugal pump is generally selected for continuous flow rather than metered delivery of highly viscous fluid. The exact model designation distinguishes this unit from adjacent sizes or hydraulic selections in the same pump family; nozzle size, impeller trim and performance must not be inferred from the name alone.

Components & Design

Component data being added…

Technical Data

pump type centrifugal
flow rate m3h 200
head m 135

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Common failures & inspection points

●Cavitation caused by insufficient suction head, blocked strainers or excessive suction losses, resulting in crackling noise, vibration and reduced delivery
●Mechanical-seal or gland leakage caused by wear, misalignment or damaged sealing faces, resulting in visible leakage around the shaft
●Bearing deterioration caused by poor lubrication, contamination or misalignment, resulting in increased noise, vibration or bearing temperature
●Impeller or casing erosion and fouling caused by abrasive solids, corrosion or deposits, resulting in reduced capacity and efficiency
●Coupling or drive problems caused by misalignment, looseness or motor faults, resulting in vibration, abnormal current draw or failure to reach normal speed

Service & Maintenance

Inspect suction strainers, valves, seals, bearings, coupling alignment, foundation bolts and visible casing condition. Trend suction and discharge indications together with vibration, noise and motor load where available. Verify that the pump is properly vented or primed before operation and that no persistent air ingress is present on the suction side. Check for shaft leakage, abnormal bearing temperature and deterioration of flexible coupling elements. Inspect the impeller and casing when performance declines or internal damage is suspected. Refer to the manufacturer documentation for the exact clearances, alignment criteria and wear limits.

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Replacement Parts

Keep shaft-sealing components, bearings, coupling elements, casing or cover gaskets and the pump-specific wear parts recommended by the manufacturer. For critical service, an impeller or rotating assembly may be appropriate depending on redundancy and onboard repair capability. Confirm all parts against the exact pump model and serial number.
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Equipment Model #76373 · ✓ still in production