DESMI ROTAN GP 50
DESMI DESMI ROTAN GP 50 is identified in the source list as a screw pump. It is normally installed in engine-room fuel, lubricating-oil or other viscous-liquid service close to the tanks and treatment equipment it serves. Its purpose is to provide smooth positive-displacement flow, particularly where liquid viscosity or suction conditions make a centrifugal pump less suitable. The existing database record provides no additional model-specific operating figure beyond the listed designation and category. The screw elements and close internal clearances create the pumping action, so cleanliness, lubrication by the handled fluid and correct relief protection are important. The exact model designation identifies a particular screw-pump size and configuration; flow, differential pressure and viscosity capability must be confirmed from the manufacturer documentation.
Components & Design
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Technical Data
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Common failures & inspection points
Service & Maintenance
Check suction strainers, inlet conditions, shaft seals, bearings, drive coupling and relief arrangements. Monitor discharge pressure, noise, vibration and delivery for signs of internal wear or suction starvation. Avoid running the pump dry and verify that heating arrangements for viscous fluids are functioning where fitted. Inspect for external leakage and confirm that the handled fluid remains within the viscosity range intended for the installed pump. During overhaul, inspect screws, liners and bearings for scoring or contact. Refer to the manufacturer documentation for the exact clearances, relief settings and wear limits.
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