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NSL Monobloc


DESMI NSL End Suction Centrifugal Monobloc Pump


The design of the NSL pumps is for medium/high flow capacities up to 1500 m³/h & medium head up to 150mLC. The pump must be configured as vertical & be of the radially split, single stage centrifugal pump type with connecting flanges according to international standards. The design of the pump needs to include mounting with electric motors having different international flange dimensions.


Material construction of the pump casings needs to be ductile cast iron GGG40 EN1561-GJL-400/DIN1693 for plain water or AISI329/1.4460 for Scrubber applications, which shall be able to manage a working pressure of 16 bar (tested 1,5 x working pressure).

The pump casing shall be equipped with a NiAlBz EN1982 CC333G/DIN17656 replaceable sealing ring. Material of the shaft shall always be of high quality duplex stainless steel AISI329/1.4460.Contruction of the pump needs to be with no bearing in pumps in order to reduce service costs.
 

The pump needs to be fitted with dynamically balanced impellers acc. to ISO1940/1-1986 (E) G6.3 that incorporates advanced double-curved blades to ensure low NPSH-values and high efficiency resulting in lower energy consumption and therefore lower running costs.
The construction material of the impeller shall be NiAlBz EN1982 CC333G/DIN17656 (as standard) or duplex stainless steel AISI329/1.4460 for Scrubber applications.

The seal type shall be a single acting, mechanical shaft seal, which seals off the liquid cavity at the motor shaft. The liquid temperature that the pump/seal can manage should at least be 250°F/121°C. For liquid temperature above 250°F/121°C, the seal needs to be balanced.


DESMI have manufactured pumps for District Energy in bigger scale since 1950, has ISO 9000 certification – and own branches, distributing partners and service providers in most markets around the world. DESMI have key focus on energy efficient solutions (often up to 85%) with easy maintenance, low downtime and a long life cycle. DESMI’s location in Denmark, the country with most experience and latest technology within District Energy is a huge advantage for our company – as we are constantly dealing with leading consultants and utility /energy companies, helping us to raise our game even further.

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Join DESMI at AquaNor, 20-23 August 2019

The world’s largest aquaculture technology exhibition is taking place August 20-23 2019 in Trondheim, Norway

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Join DESMI at Donsö Shipping Meet, 3-4 September 2019

Swedens biggest shipping event, Donsö Shipping Meet, is taking place September 3-4 in Gothenburg, Sweden

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Join DESMI at MAST, 4-6 September 2019

The MAST conference and trade-show is taking place September 4-6 in Chiba, Tokyo

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Join DESMI at BaltExpo, 9-11 September 2019

The 20th International Exhibition and Conferences BaltExpo is taking place September 9-11 2019 in Gdansk, Poland

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Join DESMI at NEVA, 17-20 September 2019

The 15th International Maritime Exhibition and Conferences of Russia is taking place September 17-20 in St. Petersburg, Russia

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Join DESMI at BWMTech North America, 24-26 September 2019

BWMTech is taking place 24-26 September, Florida, USA

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Join DESMI at Inmex SMM 3 - 5 October 2019

South Asia's largest Maritime exhibtion & conference is taking place October 3-5 in Mumbai, India

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Join DESMI at DanFish, 9-11 October 2019

The exhibition for equipment to the fishing industry, DanFish, is taking place October 9-11 in Aalborg, Denmark

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Join DESMI at Kormarine, 22-25 October 2019

The International Marine, Shipbuilding, Offshore, Oil & Gas exhibition, Kormarine, is taking place October 22-25 in Busan, Korea

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Join DESMI at Submarine Technology, 29-31 October 2019

The inaugural Submarine Technology 2019 event will be held in Amsterdam, Netherlands on 29th-31st October, welcoming an international audience of submariners, procurement teams, R&D organisations, academia and industry to discuss submarine programmes and innovations.

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Join DESMI at Europort 5-8 November 2019

The leading exhibition for special purpose vessels Europort is taking place November 5-8 in Rotterdam, Netherlands

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Join DESMI at Marintec China, 3-6 December 2019

The Maritime exhibition, Marintec China, is taking place December 3-6 in Shanghai, China

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Join DESMI at The BWMTech Conterence, 9-11 December 2019

2 day conference with ship owner case studies on ballast water and brand new workshop on crew training taking place in London 9-11 December 2019

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Join DESMI at OCT, 29-31 October 2019

Marine & Oil Spill Response show, OTC Brazil is taking place October 29-31 in Rio de Janeiro, Brazil

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