DESMI A/S

Pumps, flow systems and environmental recovery equipment

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Tagholm 1, 9400 Nørresundby, DenmarkSupported by Company profile
Centrifugal pumpsSupported by desmi.com
Cyber Essentials Plus: DESMI A/S and subsidiariesSupported by Public evidence

Explore DESMI A/S

Capabilities

Centrifugal pumps

Inline, end-suction and multistage pumps circulate cooling water and transfer industrial and marine liquids.

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End-suction and high-head pumps

Horizontal, vertical and multistage arrangements handle industrial circulation, high-head transfer and specialised marine duties.

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Self-priming and auxiliary pumps

Self-priming pumps, priming units and stripping equipment handle drainage, ballast and mixed air/liquid duties.

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Gear and screw pumps

ROTAN internal gear and K-Series screw pumps transfer viscous liquids with material and sealing configurations matched to the fluid.

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Gas cargo and fuel systems

Deepwell, canned and side-channel systems handle liquefied gas cargoes, alternative fuels and CO₂.

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Water treatment and pump controls

UV treatment and variable-speed controls support ballast-water management, aquaculture and cooling systems.

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Naval pumping and fire protection

Application-specific naval pumps, refuelling skids and fire-protection systems integrate with vessel services.

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Containment booms

Ro-Clean supplies inflatable and solid-float booms for oil containment in offshore, coastal and inland waters.

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Weir and suction skimmers

Ro-Clean combines floating weirs and vacuum recovery systems for oil on water, ground and industrial separators.

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Brush, belt and mop recovery

Oleophilic brushes, discs, belts and mops recover oil across viscosity ranges and marine or inland conditions.

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Debris recovery and workboats

Ro-Clean combines floating barriers, collection systems and multipurpose vessels for waterway and shoreline cleanup.

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Engineering and lifecycle support

Engineering, commissioning, testing, maintenance and training are delivered through DESMI operating companies and specialist partners.

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Services

Ballast-water sampling and testing

Price on request

Onboard sampling is arranged with Eurofins laboratory analysis, followed by results, recommendations and a certificate.

Service area: Shanghai, Busan, Singapore, Rotterdam, Hamburg, Copenhagen, Dubai and Miami

CompactClean operation and service training

Price on request

Onboard, shore-based and computer-based training covers CompactClean operation and servicing.

Service area: Onboard, shore-based and remote delivery

Oil-spill response training

Price on request

DESMI Ro-Clean delivers Nautical Institute-accredited OPRC Model Courses at levels 0, 1, 2 and 3 for awareness, first responders, supervisors and senior management.

Service area: Training delivery arranged with DESMI Ro-Clean

Pump and system engineering

Price on request

Feasibility, mechanical design and integration develop pump, piping, skid and automation systems for the intended installation.

Service area: Worldwide through DESMI operating companies

Pump commissioning and inspection

Price on request

Inspect, commission and troubleshoot installed pumps and flow systems for marine, offshore, heating, cooling, utility and fire-water applications.

Service area: Worldwide through DESMI service locations

Pump maintenance, repair and upgrades

Price on request

Service teams maintain, repair and upgrade pumps and controls on behalf of DESMI businesses.

Service area: Worldwide through the DESMI service network

Pump performance and acceptance testing

Price on request

Pump performance testing at DESMI Pumping Technology’s Nørresundby facility.

Service area: Nørresundby, Denmark; DESMI Pumping Technology test facility

Customer cases and selected work

Vopak Singapore

ROTAN pump servicing at Vopak Singapore

DESMI Singapore’s local workshop inspected PD202 pumps and undertook a PD201 overhaul/upgrade for changed pressure requirements, including coupling, gearbox and motor work. The account describes a fleet of 12 PD201 and 7 PD202 pumps; the 13-year-old PD201 upgrade was still underway when written, so completion is not established.

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Carletti Polska Sp. z o.o.

Chocolate transfer at Carletti Polska

Nine ROTAN pumps were operating at the Polish chocolate factory when the undated account was written. The maintenance manager attributed fewer seal changes and removal of black-particle contamination in white chocolate to the replacement pumps; these are customer observations, not guaranteed performance.

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NCC

Bitumen unloading at NCC Denmark

NCC selected ROTAN HD152 pumps for Danish asphalt plants, with electric heating and a control interlock that prevents cold starts. The customer describes a 50–70 m³/h unloading requirement for approximately 38-tonne loads within a one-hour slot; the undated account describes a rollout rather than establishing completion at every plant.

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Kinnerton

Chocolate-pump replacement at Kinnerton

More than 38 ROTAN pumps were delivered to the Norfolk factory over the 18 months preceding the undated account. Fixed and mobile chocolate-transfer duties used variable-speed control; the customer described reduced maintenance after conversion.

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Sea Turtle Sargazo development and installations

Ro-Clean’s initiative began in 2015, with a first complete Sargazo Boom installation in January 2016 and Mesh Boom development in 2018. The undated account describes more than 20 km of installed Mesh Boom and three removal-device designs; the installation total is historical and no individual customer is named.

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Certifications and standards

Cyber Essentials Plus: DESMI A/S and subsidiaries
Certificate names DESMI A/S and Subsidiaries at Tagholm 1, Nørresundby, with scope 'Whole Organisation', profile version 3.2 (Willow). Certified 7 May 2026; recertification due 7 May 2027. JOVASI Technology certificate 04dfd92f-2b41-431b-ae2e-df5fb8ff7120 covers ICT assurance. The document does not enumerate the included subsidiaries.
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ISO 9001: ROTAN test and production quality system
The Nørresundby test-bed page identifies a BVQI-certified ISO 9001 quality system for ROTAN static leak and dynamic testing. The detailed facility belongs to DESMI Pumping Technology; no certificate dates or parent-wide manufacturing scope are stated.
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Nautical Institute OPRC course accreditation
DESMI Ro-Clean states accreditation for OPRC Model Courses levels 0, 1, 2 and 3. This is the training provider’s course accreditation; no validity dates are given.
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IMO and USCG type approvals: CompactClean systems
The CompactClean product pages state IMO and USCG type approval. CompactClean uses a single global mode; OptIMO uses separate operating modes. Approval, capacity and UV-transmission conditions belong to the selected system; these are product approvals, not DESMI A/S management-system certificates.
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ATEX: selected ROTAN configurations
The ROTAN family page identifies PTB registration 03 ATEX D052 and ATEX-compliant configurations for explosive atmospheres. Applicability depends on the pump model and installation documentation; the statement does not cover every ROTAN arrangement.
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Credentials and recognition

UK and Ireland Spill Association: DESMI Ro-Clean
Ro-Clean’s approvals page states membership of the UK and Ireland Spill Association. The statement applies to Ro-Clean; no membership dates are stated.
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About DESMI A/S

Pumps, liquid-handling systems, water treatment and pollution-recovery equipment serve marine, industrial, utility, aquaculture and defence applications. DESMI A/S is the Danish headquarters of the commercial group, with a business lineage dating to 1834. The portfolio is supplied and serviced through separately named operating businesses, including DESMI Pumping Technology A/S, DESMI Danmark A/S, DESMI Ro-Clean A/S and Nordan Marine A/S. Pump test-bench facilities at Nørresundby belong to DESMI Pumping Technology; environmental equipment and oil-spill training are offered by Ro-Clean. Regional service and project execution are identified where the source establishes them.

Location

Nørresundby: Tagholm 1, 9400 Nørresundby, Denmark

Profile detailsShow details

Works with

Industries: Marine, Process industry, Utilities, Aquaculture, Defence, Environmental services

Specializes in

Centrifugal pumps

ROTAN internal gear pumps

Gas cargo and fuel systems

UV water treatment

Oil spill response equipment

Applications

Liquid transfer, Cooling water circulation, Gas cargo handling, Ballast water treatment, Oil spill recovery, Marine debris collection

Technical details

DesFuel RSL deepwell pumps: Model flow bands: RSL20: 0.5–6; RSL25: 1–13; RSL32: 2–24; RSL40: 5–45; RSL50: 7–80 m³/h
DesFuel RSL deepwell pumps: Stages: Up to 9, selected for the duty
DesFuel RSL deepwell pumps: Nominal speed: 3,500 rpm; actual speed depends on liquid density, viscosity, shaft, stages and impellers
NSL vertical inline pumps: Connections: DN 80–350
NSL vertical inline pumps: Table flow limit: 2,000 m³/h at 50 Hz and 2,400 m³/h at 60 Hz; page body also includes an inconsistent 6,200 m³/h NSLV-R/NSLH-R description
NSL vertical inline pumps: Table head limit: 195 m; model and duty dependent
NSL vertical inline pumps: Table pressure and temperature: 25 bar and 140 °C; separate family limits
NSL magnetic-drive pumps: Flow limit: 379 m³/h at 50 Hz; 455 m³/h at 60 Hz
NSL magnetic-drive pumps: Head limit: 138 m with direct-on-line drive
NSL magnetic-drive pumps: Operating ranges: 16 bar; −40 to 140 °C; 0.3–300 cSt, configuration dependent
NSL magnetic-drive pumps: Connections: DN 80–125
DesCan CDW canned deepwell pumps: Flow range: 80–1,200 m³/h
DesCan CDW canned deepwell pumps: Head limit: 200 m liquid column
DesCan CDW canned deepwell pumps: Temperature range: −100 to +50 °C
High-flow aquaculture pumps: Flow range: 500–6,400 m³/h across the range
High-flow aquaculture pumps: Head range: 2–20 m liquid column
High-flow aquaculture pumps: Connections and rating: DN 250–600; PN 5
High-flow aquaculture pumps: Motor range: 7.5–200 kW; 6- or 8-pole motors, selected by duty
CompactClean ballast-water treatment: UV transmission threshold: 35% in IMO waters; 40% in US waters
CompactClean ballast-water treatment: CC1000 example: 1,040 m³/h ballast and 1,180 m³/h deballast; 144 kW reactor, DN 350
CompactClean ballast-water treatment: CC1000 installation example: 2.8 m² treatment footprint plus 0.6 m² electrical cabinet, which can be up to 100 m away
CompactClean OptIMO: CC1000 example: 1,040 m³/h ballast; 1,200 m³/h IMO deballast or 1,131 m³/h US deballast
CompactClean OptIMO: CC1000 reactor: 108 kW, DN 300; mode-specific configuration
ROTAN HD heavy-duty gear pumps: Flow limit: 250 m³/h across the range
ROTAN HD heavy-duty gear pumps: Separate family limits: 1,750 rpm; 16 bar differential pressure; 250,000 cSt; 250 °C, subject to selected duty
ROTAN ED magnetic-drive gear pumps: Flow limit: 90 m³/h across the range
ROTAN ED magnetic-drive gear pumps: Separate family limits: 1,750 rpm; 16 bar; 10,000 cSt; 250 °C, configuration dependent
DesCargo NDW deepwell cargo pumps: Flow limit: 1,200 m³/h
DesCargo NDW deepwell cargo pumps: Head limit: 250 m liquid column
DesCargo NDW deepwell cargo pumps: Minimum temperature: −165 °C for the specified stainless-steel construction
DesCargo NDW deepwell cargo pumps: Guide-bearing spacing: 1.2 m
DesCargo NDB booster pumps: Minimum temperature: −104 °C; selected cargo configuration
SERO by DESMI side-channel systems: Pump range: SH P 110–220
SERO by DESMI side-channel systems: Flow range: 0.4–23 m³/h
SERO by DESMI side-channel systems: Separate range limits: 3,600 rpm; −60 to 130 °C; nominal pressure 100 bar
SERO by DESMI side-channel systems: Head and suction: Head up to 2,100 m and NPSH 0.2–1.2 m, selected liquid and configuration; not a combined maximum-pressure duty
Helicopter refuelling systems: Model-table flow bands: DES150/250: 150–230 L/min; DES165/265: 250–380 L/min; DES180/280: 380–680 L/min; introductory text gives different rounded bands
AquaShield UV systems: Range capacity: 35–3,500 m³/h depending on model, UV transmission and required dose
DSL double-suction inline pumps: Connections: DN 150–500
DSL double-suction inline pumps: Table flow limit: 6,200 m³/h at 50 Hz; 7,400 m³/h at 60 Hz; body also states 4,000 m³/h
DSL double-suction inline pumps: Head and pressure: 140 m and 25 bar, separate family limits
ESL inline pumps: Connections: DN 25–100
ESL inline pumps: Flow limit: 200 m³/h at 50 Hz; 250 m³/h at 60 Hz
ESL inline pumps: Separate family limits: 65 m head; 16 bar; 140 °C
ESL magnetic-drive pumps: Connections: DN 25–80
ESL magnetic-drive pumps: Flow limit: 135 m³/h at 50 Hz; 163 m³/h at 60 Hz
ESL magnetic-drive pumps: Separate family limits: 68 m head; 16 bar; −40 to 120 °C; 0.3–300 cSt
ESLH end-suction pumps: Flow limit: 200 m³/h at 50 Hz; 250 m³/h at 60 Hz
ESLH end-suction pumps: Separate family limits: 65 m head; 16 bar; 140 °C
ESLHT high-temperature pumps: Connections: DN 25–65
ESLHT high-temperature pumps: Flow limit: 100 m³/h at 50 Hz; 120 m³/h at 60 Hz
ESLHT high-temperature pumps: Separate family limits: 65 m head; 30 bar; 180 °C
Modular S self-priming and stripping pumps: Table flow limit: 340 m³/h at 50 Hz; 410 m³/h at 60 Hz, rather than the rounded 400 m³/h headline
Modular S self-priming and stripping pumps: Separate family limits: 140 m head; 140 °C; DN 32–125
Modular S self-priming and stripping pumps: Stripping suction lift: Up to 7 m for the stripping arrangement
ROTAN GP general-purpose gear pumps: Flow limit: 50 m³/h
ROTAN GP general-purpose gear pumps: Separate family limits: 1,750 rpm; 16 bar; 7,500 cSt; 150 °C
ROTAN PD petrochemical gear pumps: Flow limit: 250 m³/h
ROTAN PD petrochemical gear pumps: Separate duty limits: 1,750 rpm; 16 bar differential pressure; 250,000 cSt; 250 °C
ROTAN PD petrochemical gear pumps: Flange-class conflict: Page introduction states ANSI 300/PN 40; body states ANSI 150/PN 20; no resolved flange class assigned
SA self-priming pumps: Table flow limit: 610 m³/h at 50 Hz; 730 m³/h at 60 Hz; headline rounds to 650 m³/h
SA self-priming pumps: Separate family limits: 115 m head; 140 °C; DN 20–200
ROTAN CD chemical gear pumps: Flow limit: 250 m³/h
ROTAN CD chemical gear pumps: Separate family limits: 1,750 rpm; 16 bar; 250,000 cSt; 250 °C; the page’s 250 psi conversion is inconsistent with 16 bar
TSL two-stage inline pumps: Connections: DN 32–65
TSL two-stage inline pumps: Flow limit: 65 m³/h at 50 Hz; 80 m³/h at 60 Hz
TSL two-stage inline pumps: Separate family limits: 135 m head; 16 bar; 140 °C
TSL magnetic-drive pumps: Connections: DN 25–65
TSL magnetic-drive pumps: Flow limit: 65 m³/h at 50 Hz; 78 m³/h at 60 Hz
TSL magnetic-drive pumps: Separate family limits: 131 m head with direct-on-line drive; 16 bar; −40 to 140 °C; 0.3–300 cSt
TSLH two-stage horizontal pumps: Flow limit: 65 m³/h at 50 Hz; 80 m³/h at 60 Hz
TSLH two-stage horizontal pumps: Separate family limits: 135 m head; 16 bar; 140 °C
MV magnetic-drive multistage pumps: Connections: DN 25–40
MV magnetic-drive multistage pumps: Flow limit: 13 m³/h at 50 Hz; 16 m³/h at 60 Hz
MV magnetic-drive multistage pumps: Separate family limits: 250 m head; 25 bar; −40 to 140 °C
NSLV-R and NSLH-R inducer pumps: Connections: DN 65–600
NSLV-R and NSLH-R inducer pumps: Flow limit: 6,200 m³/h at 50 Hz; 5,900 m³/h at 60 Hz
NSLV-R and NSLH-R inducer pumps: Separate family limits: 200 m head; 25 bar; 140 °C
DES-1 emergency fire pumps: Range limits: Up to 160 m³/h and 9 bar, duty dependent
DES-1 emergency fire pumps: Fuel tank: 3 hours at full load for the described arrangement
NSA self-priming pumps: Capacity conflict: Family table: 70 m³/h and 50 m head; NSA80-250 example: 85 m³/h and 55 m
NSA self-priming pumps: Table limits: 12 bar; 140 °C; DN 50–80
NSL stainless-steel scrubber pumps: Connections: DN 65–400
NSL stainless-steel scrubber pumps: Flow limit: Up to 1,800 m³/h across the scrubber range
K-Series triple-screw pumps: Flow limit: 174 m³/h at 1,450 rpm
K-Series triple-screw pumps: Separate family limits: 3,600 rpm maximum; 16 bar; 10,000 cSt; 180 °C
VAC liquid-ring pumps: Flow limit: 70 m³/h at 50 or 60 Hz
VAC liquid-ring pumps: Separate family limits: 19 m head; 3.5 bar; 80 °C; DN 65–100
Compressed-air priming ejectors: Adjustment range: 3–100 m total head for the automatic priming control
Mobile fire and emergency pumps: Minimum described weight: As low as 50 kg, configuration dependent
Mobile fire and emergency pumps: Connections: 2-inch Storz C
RO-BOOM inflatable booms: Size range: 0.6–3.2 m overall height, nine sizes
RO-BOOM inflatable booms: Section length: Up to 250 m
RO-BOOM inflatable booms: Connectors: Stainless-steel hinge or ASTM connectors
A-BOOM fence booms: Standard section: 15 m
A-BOOM fence booms: Nominal weight: 1.5 kg/m; the page rounds a 15 m section to 22 kg
TROILBOOM rapid-response booms: Storage example: Up to 400 m on a reel
TROILBOOM rapid-response booms: Deployment example: 200 m in under 5 minutes under the described deployment conditions
TROILBOOM AF inflatable booms: Reel capacity: Up to 200 m
Speed-Sweep oil recovery systems: Collection-speed claim: Up to 3 knots under the system’s described operating conditions
Speed-Sweep oil recovery systems: Boom construction: RO-BOOM 1500 with 3 m buoyancy chambers, tapering to RO-BOOM 1300 guide-boom connections
TARANTULA weir skimmers: Combined pumping capacity: Up to 250 m³/h
TARANTULA weir skimmers: Discharge pressure: Up to 10 bar; dependent on pump duty
TARANTULA XL offshore skimmers: System rating: 375 m³/h and up to 10 bar in the three-pump description; pump-count conflict prevents treating this as a universal configuration
TARANTULA XL offshore skimmers: Optional power pack: 210 kW diesel hydraulic
TERMINATOR weir skimmers: Pumping capacity: 100–125 m³/h depending on power pack and drive motor
TERMINATOR weir skimmers: Discharge pressure: Up to 10 bar
TERMINATOR weir skimmers: Pump weight: 80 kg for the removable pump, not the complete skimmer
RO-SKIM boom-integrated skimmers: Boom compatibility: RO-BOOM 1000, 1300, 1500, 1800 and 2000
TERMITE weir skimmers: Power-pack example: 30 kW multipurpose unit
TERMITE weir skimmers: Discharge pressure: Up to 10 bar for the described pump
MINI-MAX suction skimmers: Preferred suction connection: 2 or 3 inches with variable-speed self-priming pump
TERRAPIN industrial skimmers: Diameter: 410 mm
TERRAPIN industrial skimmers: Suction hose: 1¼ inches for the described floating arrangement
TERRAPIN industrial skimmers: Skimming limit: Up to 10,000 L/hour, selected suction system
RO-WEIR suction heads: Supplied pipes: 1 m straight pipe with floats and 0.3 m short suction pipe
Octopus LSFO skimmers: Pump limits: Up to 100 m³/h and 13 bar, selected duty
Octopus LSFO skimmers: Test efficiency claim: Up to 99% in the cited IMAROS 2/CEDRE/Ohmsett test context; not a field guarantee
Giant Octopus skimmers: Combined pumping capacity: Up to 250 m³/h
Giant Octopus skimmers: Discharge pressure: Up to 10 bar, pump-duty dependent
Octopus In-line skimmers: Test result: 98.4% oil efficiency for type I–II oil at 7 °C and 500–800 cSt under the cited OHMSETT ASTM test protocol
DBD disc, brush and drum skimmers: Test results: 98% recovery efficiency in 10 mm diesel and 99% in 25 mm diesel in the source’s cited tests; field performance varies
Polar Bear ice skimmers: Collection arrangement: 6 hydraulic brush modules in 2 circuits for 360-degree collection
RO-VAC vacuum recovery systems: Vacuum-system limits: Up to 95% vacuum and 6,800 L/min air flow; these are vacuum-pump figures, not liquid recovery capacity
POLLCAT cleanup workboats: Versions: 15.5 m and 19 m, customised to operator requirements
POLLCRAFT pollution workboats: Lengths: 10 m and 12 m versions
POLLCRAFT pollution workboats: Aft deck: More than 20 m²
POLLCRAFT pollution workboats: Carrying capacity: Up to 5,000 kg, selected configuration
RISE automated debris collectors: Recovery claim: Up to 3,500 kg/hour under suitable waste and site conditions
RISE automated debris collectors: Transport: Modular RISE A can ship in a 20-foot container
SWEEP marine debris systems: Guide booms: RO-BOOM 650 or 1000
SWEEP marine debris systems: Opening example: Typically 5–8 m with jib; up to 20 m with Ro-Kite and a suitably sized vessel
SWEEP marine debris systems: Recovery claim: Up to 3,500 kg/hour under suitable waste and operating conditions
Mesh Boom debris barriers: Standard section: 15 m; other lengths on enquiry
Mesh Boom debris barriers: Mesh tensile strength: 53 kN
Mesh Boom debris barriers: Geometry: 105 cm overall height; 75 cm draft; 30.5 cm freeboard, nominal source dimensions
Mesh Boom debris barriers: Connectors: ASTM F962 aluminium slide type
Sargassum remover systems: Deployment crew: 2–3 people for the described lightweight arrangement
Pump spare-parts kits: Fast-track programme: Selected NSL, ESL, Modular S and ROTAN GP configurations within 2 working days, subject to programme availability and conditions

Related categories

Belt oil skimmers Brush oil skimmers Cleanup workboats Conveyor debris collectors Debris collection baskets End-suction centrifugal pumps Gear pumps Immersed and deepwell centrifugal pumps

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Updated Sep 13, 2026

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