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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 ISH China & CIHE 2020, 11-13 May

ISH China & CIHE – China is an International Trade Fair for Heating, Ventilation, Air-Conditioning, Sanitation & Home Comfort Systems taking place May 11-13 2020 in Beijing, China at the New China International Exhibition Center

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Join DESMI at Maritime Industry Gorinchem, 12-14 May 2020

The Maritime Industry exhibition is taking place May 12-14 May 2020 in Gorinchem, Netherlands at the Evenementenhal Gorincham

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Join DESMI at the Submarine Technology Symposium, 12-14 May 2020

The Submarine Technology Symposium taking place May 12-14 2020 in Laurel, USA

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Join DESMI at Future Surface Fleet, 2-4 June 2020

Future Surface Fleet 2020 explores the wide range of programmes being conducted by nations and how new and changing technologies will influence the maritime environment over the next 25 years. - taking place 2-4 October 2020 in Portsmouth, UK at the Portsmouth Mariott Hotel

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Join DESMI at FLOWTECH CHINA 2020, 03-05 Jun

Flowtech China is taking place June 03-05 2020 in Shanghai, China at the National Convention & Exhibition Center

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Join DESMI at Philipines Marine, 16-18 June 2020

The 7th Edition of PHILIPPINES MARINE (PHILMARINE) 2020 co-located with Shipbuild Philippines and O­ffshore Philippines 2020 is taking place June 16-18 2020 in Pasay City, Philippines at the SMX Convention Center Manila, Mall of Asia Complex

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Join DESMi at Zambia Trade & Fair 2020, 26 Jun - 02 Jul

Zambia Trade & Fair is taking place June 26 - July 02 2020 in Ndola, Zambia at the Trade Fair Grounds

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Join DESMI at Marintec 2020, 11-13 August

Marintec South America is s a must attend trade-show for anyone who wants to stay ahead in the maritime market taking place August 11-13 2020 in Rio de Janeiro, Brazil at the SulAmerica Convention Center

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Join DESMI at Nor-Fishing, 18-21 August 2020

One of the largest fisheries technology exhibitions in the world, Nor-Fishing is taking place August 18-21 2020 in Trondheim, Norway at the Trondheim Spektrum

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Join DESMI at the Irish Skipper Expo, 4-5 September 2020

The Irish Skipper Expo is taking place September 4-5 2020 in Limerick, Ireland at the UL Sport Arena

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Join DESMI at SMM, 8-11 September 2020

The leading international maritime trade fair SMM is taking place September 8-11 2020 in Hamburg, Germany at Hamburg Messe + Congress

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Join DESMi at AquaCulture UK 2020, 19-21 May

Aquaculture UK is the most important aquaculture exhibition and conference held in the British Isles taking place 15-17 September 2020 in Aviemore, Scotland at the Macdonald Aviemore Resort

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Join DESMI at CHEMUK 2020, May 13-14

The UK's chemical industries supply chain expo is taking place September 16-17 2020 in Stretford, United Kingdom at the Eventcity Limited

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Join DESMI at Asia Pacific Maritime, 30 Sept. - 02 Oct. 2020

Asia Pacific Maritime (APM) is a premier exhibition and conference in Asia showcasing a complete overview of the many vessel sectors taking place March 18-20 in Singapore at the Marina Bay Sands

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Join DESMI at Euronaval 2020, 20-23 October

The world naval defense exhibition taking place October 20-23 2020 in Paris, France at Paris Le Bourget Exhibition Centre

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Join DESMI at Posidonia 2020, 26-30 October

The International Shipping Exhibition taking place October 26-30 in Athens, Greece at the Metropolitan Expo

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Join DESMI at Sea Trade Maritime 2020, 7-9 December

Find DESMI at stand no G31, at the largest maritime event and conference in the Middle East taking place December 7-9 2020 in Dubai at the New Dubai Exhibition Centre.

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