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DSL Vertical Spacer


DESMI DSL Vertical Inline Spacer Version

The pump is designed for the high flow capacities up to 4000 m³/h. Manufacturing shall be vertical in-line, & single-stage, radially split, double suction centrifugal pump with connecting flanges according to international standards. Installation without alignment is required. Vertical design especially is recommended where small overall ground floor is available. The design of the suction side provides for a perfect flow, and the inlet is placed in line with the outlet.

The design shall incorporate advanced double-suction, closed impeller with double-curved blades, with a helical pump casing in one casting - resulting in high efficiency and low NPSH-values.       

The pump haft to be designed for mounting with electric motors having different international flange dimensions acc. to DIN, ANSI or JIS. The pump casings shall be made in ductile cast iron GGG40 EN1561-GJL-400/DIN1693.

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. The pumps shall be fitted with bearings and mechanical shaft seal at both top and bottom. This gives a robust construction, designed for trouble-free continuous duty.

The impeller shall be made in NiAlBz EN1982 CC333G/DIN17656 (as standard) or duplex stainless steel AISI329/1.4460 for Scrubber applications both with double-curved blades to ensure low NPSH-values and high efficiency. Shaft material shall be of duplex stainless steel AISI329/1.4460 with a single acting, mechanical shaft seal, which seals off the liquid cavity at the motor shaft.

The pump needs to be equipped with a spacer coupling, which is a combined distance and flexible coupling between drive unit and electric motor. This makes it possible to remove the complete bearing housing with shaft, bearings, shaft seal and impeller – without dismantling the motor or pump from the piping. This represent significant advantages to the end user, who with this pump solution secures his installation trouble free maintenance with minimum down time.

For added efficiency the internal pump casing and impeller can be coated for reduction of friction and thus increase in energy efficiency.

As extra equipment the pump may be mounted with a priming pump of the water ring type, complete with
filter and feed water tank, or it may be delivered with an ejector pump.

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 Surface Warships 2019

Surface Warships 2019 is taking place 29 - 31 January, 2019 in London, UK

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Join DESMI at DDAC, 6-7 February 2019

Defence & Aerospace Conference is taking place February 6-7 in Aalborg, Denmark

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Join DESMI at INMEX Vietnam, 27-29 March 2019

The 7th Edition of The Leading & Definitive International Maritime Expo in Vietnam is held March 27-29 2019 in Ho Chi Minh City, Vietnam

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Join DESMI at Sea Asia, 9-11 April 2019

Asia's anchor maritime exhibition and conference returns to Singapore for its 7th edition from 9 - 11 April 2019

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Join DESMI at Expo Maritt, Turkey, 16-19 April 2019

The International Maritime Exhibition & Conference is taking place April 16-19 2019 in Istanbul, Turkey

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Join DESMI at CHEMUK, UK, 1-2 May 2019

The new 2 Day expo for the UK’s Chemical Industry is taking place May 1-2 2019 in Harrogate, Leeds City Region, UK

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Join DESMI at Atlantic Fair, Faroe Islands, 21-23 May 2019

 The Internatioan Maritime Exhibition is taking place May 21-23 2019 in Klaksvik, Faroe Islands

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Join DESMI at Spillcon, Australia, 20-24 May 2019

The international oil spill conference for the Asia-Pacific region, Spillcon 2019, is taking place May 20-24 in Perth, Australia

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Join DESMI at Bari Ship, 23-25 May 2019

Bari-Ship exhibition and conference is held May 23-25 in Ehime, Japan

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Join DESMI at Flowtech, 3-5 June 2019

The Flowtech China exhibition is taking place June 3-5 in Shanghai, China

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Join DESMI at Future Surface Fleet, 4-6 June 2019

The Future Surface Fleet 2019, is taking place June 4-6 in Portsmouth, UK

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Join DESMI at Nor-Shipping, June 4-7, 2019

The exhibition where the maritime and ocean industries meet every two years is taking place June 4-7 in Oslo, Norway

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Join DESMI at BuildExpo Kenya, 4-6 July 2019

East Africa's largest building and construction fair is taking place July 4-6 in Nairobi, Kenya

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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 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 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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