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The DESMI NSL pump meets the special marine and industrial market requirements for: • High efficiency • Easy installation/service • Specific materials and further, an attractive price. Material specification Design Features The pump is a vertical in-line, radially split, singlestage centrifugal pump with connecting flanges according to international standards. The pump is designed to be coulped with electric motors having different international flange dimensions. The pump casing is equipped with a replaceable sealing ring. The impeller is made with double-curved blades to ensure low NPSH-values and high efficiency. The bearing unit is equipped with sturdy ball bearings and the small types are fitted with lifetime-lubricated bearings. In the larger types the lower bearing is a double bearing for which a lubrication point is provided. Shaft in stainless steel with mechanical shaft seal of an approved brand is standard. For more information on Marine & Offshore solutions, please visit www.desmi.com MARINE & OFFSHORE DEFENCE & FUEL

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Applications Within marine industry the pumps are suitable as fresh and seawater cooling pumps, bilge and ballast pumps, fire-fighting and general service pumps, and further for transport of slightly aggressive liquids with low viscosity such as diesel and lubricating oils. Further, the pumps can be supplied in a special version for pumping brine and similar media. Many other applications can be found for these pumps within industry. All pump sizes are available as self-priming pumps with a separate built-on priming pump of the water ring type, complete with suction strainer and water feed...

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Design Details Pumps with Ø 215 and Ø 265 Impeller Suction and discharge flange dimensions are identical. The line through inlet and outlet is flush with the centre line of the shaft. The pumps are mounted with one impeller wear ring. Pumps with Ø 330, Ø 415 and Ø525 Impeller Dimension of the suction flange is one size larger than that of the discharge flange. The line through inlet and outlet is tangential offset in relation to the centre line of the shaft. The pumps have two impeller wear rings. Monobloc without Bearing The pump is for small capacities and limited space. This version has...

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Spacer The pump is for high capacities, heavy loads, and high pump speeds. As a special feature the pump is equipped with a spacer coupling which is a combined distance and flexible coupling. This makes it possible to remove the complete bearing housing with shaft, bearings, shaft seal, and impeller without dismantling or loosening the motor or piping. For high capacities and the resulting larger and heavier electric motors we recommend this pump version because of the easy dismantling of the rotating pump parts in connection with inspection and repair. This special feature is often a...

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