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COMBIMAC is a manufacturer of special
electric motor An electric motor is an Electric machine, electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a Electromagneti ...
s and centrifugal
fans Fan commonly refers to: * Fan (machine), a machine for producing airflow, often used for cooling ** Hand fan, an implement held and waved by hand to move air for cooling * Fan (person), short for fanatic; an enthusiast or supporter, especially wit ...
located in the town Emmen,
the Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...
.


History


Pelger

The company was originally founded on 1 November 1919 as Pelger in
Rotterdam Rotterdam ( , , , lit. ''The Dam on the River Rotte'') is the second largest city and municipality in the Netherlands. It is in the province of South Holland, part of the North Sea mouth of the Rhine–Meuse–Scheldt delta, via the ''"N ...
in the Netherlands by Mr. ''Willem D. Pelger'', with a
funding Funding is the act of providing resources to finance a need, program, or project. While this is usually in the form of money, it can also take the form of effort or time from an organization or company. Generally, this word is used when a firm uses ...
capital of 40
Dutch guilder The guilder ( nl, gulden, ) or florin was the currency of the Netherlands from the 15th century until 2002, when it was replaced by the euro. The Dutch name ''gulden'' was a Middle Dutch adjective meaning "golden", and reflects the fact that, wh ...
s The company started at the Zwanesteeg 4 in Rotterdam as a direct current
electric motor An electric motor is an Electric machine, electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a Electromagneti ...
repair shop. In 1920 the first employee was offered a job. Direct current motors were in use in Rotterdam, as a result of the
direct current Direct current (DC) is one-directional flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor such as a wire, but can also flow through semiconductors, insulators, or even ...
power supply instead of
alternating current Alternating current (AC) is an electric current which periodically reverses direction and changes its magnitude continuously with time in contrast to direct current (DC) which flows only in one direction. Alternating current is the form in whic ...
supply in these early days of
electric grid An electrical grid is an interconnected network for electricity delivery from producers to consumers. Electrical grids vary in size and can cover whole countries or continents. It consists of:Kaplan, S. M. (2009). Smart Grid. Electrical Power ...
. In March 1926 the company moved to the Paardenstraat 5 and in May 1929 they moved on to the Van Speykstraat 86–102 in Rotterdam. In 1936 a
centrifugal fan A centrifugal fan is a mechanical device for moving air or other gases in a direction at an angle to the incoming fluid. Centrifugal fans often contain a ducted housing to direct outgoing air in a specific direction or across a heat sink; such a ...
,
brake A brake is a mechanical device that inhibits motion by absorbing energy from a moving system. It is used for slowing or stopping a moving vehicle, wheel, axle, or to prevent its motion, most often accomplished by means of friction. Background ...
motors and small induction motors program from another manufacturer named HSM (short for: Heinke-Schuitema-Musselkanaal) in Musselkanaal was bought and brought to Rotterdam. Mr. K.W. Heinke, one of the former owners and
mechanical engineer Mechanical may refer to: Machine * Machine (mechanical), a system of mechanisms that shape the actuator input to achieve a specific application of output forces and movement * Mechanical calculator, a device used to perform the basic operations of ...
of HSM also moved to work at the factory in Rotterdam. In the same year 40 off.
patent A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an enabling disclosure of the invention."A p ...
s were applied for, with reference to three inventions: the
centrifugal switch A centrifugal switch is an electric switch that operates using the centrifugal force created from a rotating shaft, most commonly that of an electric motor or gasoline engine. The switch is designed to activate or de-activate as a function of th ...
, the
centrifugal fan A centrifugal fan is a mechanical device for moving air or other gases in a direction at an angle to the incoming fluid. Centrifugal fans often contain a ducted housing to direct outgoing air in a specific direction or across a heat sink; such a ...
housing and the principle of a
squirrel-cage rotor A squirrel-cage rotor is the rotating part of the common squirrel-cage induction motor. It consists of a cylinder of steel laminations, with aluminum or copper conductors embedded in its surface. In operation, the non-rotating stator winding i ...
. The Pelger repair shop gradually evolved into a
factory A factory, manufacturing plant or a production plant is an industrial facility, often a complex consisting of several buildings filled with machinery, where workers manufacture items or operate machines which process each item into another. T ...
designing and manufacturing special electric motors and centrifugal fans. After some time the two original company names Pelger and HSM were changed into a variant of the existing names: Holland Special Machines Pelger or HSM-Pelger.


Heinke & Schuitema Musselkanaal

The company Heinke en Schuitema Musselkanaal (HSM) was founded on 1 March 1933 by Mr. ''Konrad W. Heinke'' and Mr. ''Etsko Schuitema'' as a company to manufacture and repair of electric machines. In 1935 per coincidence contact was made with Mr. G. Ph. van Gelder, general-representative, or sole distributor of this in origin
blacksmith A blacksmith is a metalsmith who creates objects primarily from wrought iron or steel, but sometimes from #Other metals, other metals, by forging the metal, using tools to hammer, bend, and cut (cf. tinsmith). Blacksmiths produce objects such ...
fan manufacturer in
Musselkanaal Musselkanaal (also: ''Stads-Musselkanaal''; Gronings: ''Muzzelknoal'') is a town in the Netherlands, Dutch province of Groningen (province), Groningen. It is located in the municipality of Stadskanaal. It was established by the Groningen, city of ...
and Mr. Pelger. The company was not performing very well and financially in trouble deep. Contact was made with this factory and as a result the company was bought, as well as the inventory and 5 employees moved to Rotterdam. Mr. Schuitema continues the company under E. Schuitema repair company of electric machines, which ends in 1947 as a result of his death. Mr. Heinke keeps all rights on the
casting Casting is a manufacturing process in which a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify. The solidified part is also known as a ''casting'', which is ejected ...
patterns, which are based at: , en de .In 1936 the manufacturing and series production at the Pelger factory started. Mr. Heinke initiated further development and introduction of new models. Mr. van Gelder kept the sole distribution rights for the products. The sales and distribution of the products therefore stayed until World War II with Mr. van Gelder's company, Firma G. Ph. van Gelder in
Overschie Overschie is a neighborhood of Rotterdam, Netherlands, formerly a separate village with its own municipality. The village of Overschie was located on the intersection of four rivers called "Schie": the Delftsche Schie, Schiedamsche Schie, Delfs ...
. After
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
a new sales organization was set up: Van Gelder & Pelger. On 9 June 1950 the company Pelger N.V. was founded with a funding capital of 500.000,-- Dutch guilders. In 1951 it was decided the sales and distribution of the produced goods would be done by the company Pelger itself, by means a separate sales office located at the Groenendaal 25 in Rotterdam.


World War II

At the beginning of
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
, the company had a narrow escape during the
Rotterdam Blitz Rotterdam was subjected to heavy aerial bombardment by the ''Luftwaffe'' during the German invasion of the Netherlands in World War II. The objective was to support the German troops fighting in the city, break Dutch resistance and force the Du ...
, or bombing of Rotterdam. The limit of the burned down zone ( Dutch substantive: brandgrens) came very close to the factory, located at the Van Speykstraat 102. During World War II under the occupation of the German Regime the factory continued to work almost up to the end of the war. Mr. van Gelder had to end the cooperation on behalf of German orders received and went into hiding and stayed under cover. Also the name of the trade company Firma G.Ph. van Gelder could no longer be used and was replaced by Handelsonderneming H.S.M.-HOLLAND.In 1941 the factory was declared as enemy of the Germany Regime and in 1943 the factory was forced to work for the German industry. The company (the so-called ) raised an order to manufacture refrigerator motors for the company
Alfred Teves Alfred Teves (27 January 1868 – 5 November 1953) was a German ship's captain who after a short naval career from 1898 reinvented himself as an auto industry entrepreneur. The "Alfred Teves Maschinen- und Armaturenfabrik" company became one of ...
. The production of the motors was sabotaged by the employees and management, endangering personal lives. On 1st 1944 in small committee the 25 anniversary of the company was celebrated. A few days later during the Rotterdam Razzia (or
Roundup A roundup is a systematic gathering together of people or things. Roundup, Round Up or Round-up may also refer to: Agriculture * A muster (livestock) (AU/NZ) or a roundup (US/CA) is the process of gathering livestock. * Roundup (herbicide), a M ...
) on 6 November 1944 all the raw materials were collected from the factory and on 10 November all the machinery were collected and transported to Germany. Mr. Heinke who had German roots and
NSDAP The Nazi Party, officially the National Socialist German Workers' Party (german: Nationalsozialistische Deutsche Arbeiterpartei or NSDAP), was a far-right politics, far-right political party in Germany active between 1920 and 1945 that crea ...
sympathies, had gained the title of Rüstung-Inspektor der Rüstung und Kriegsprodukten in the Netherlands, assisted the transport. Mr. Heinke wanted to continue the development of the repulsion motor, on which a patent was
pending Pending is a district in Kuching, Sarawak, Malaysia Malaysia ( ; ) is a country in Southeast Asia. The federal constitutional monarchy consists of thirteen states and three federal territories, separated by the South China Sea into two ...
for his own account. Mr. J. Vos an employee of the company and Head of the test laboratory was put to work as a forced laborer in
Zwickau Zwickau (; is, with around 87,500 inhabitants (2020), the fourth-largest city of Saxony after Leipzig, Dresden and Chemnitz and it is the seat of the Zwickau District. The West Saxon city is situated in the valley of the Zwickau Mulde (German: ' ...
. After the war Mr. Vos managed to find the machinery taken from the Pelger factory, as he stayed in contact with Mr. Heinke. He found the machinery were stored at the Tischlerei Max Siegert in Frankhausen, also Mr. Heinke's former home. The machinery which were in the possession of Mr. Heinke's widow, as Mr. K.W. Heinke passed away shortly after the war. The machinery were officially confiscated by the American Occupation Authorities in
Crimmitschau Crimmitschau () is a town in the district of Zwickau in Saxony, Germany. Geography Crimmitschau lies on the river Pleiße in the northern foothills of the Erzgebirge. Neighboring municipalities Adjacent communities include: Zwickau, Dennherit ...
and were brought back to the Netherlands.


Emmen

After moving premises within Rotterdam a couple of times to larger facilities, in 1957 the factory moved from the city of Rotterdam to the town of Emmen. The factory location at the Van Speykstraat 102 in Rotterdam became to small and it was located too near to the city center. The available
subsidy A subsidy or government incentive is a form of financial aid or support extended to an economic sector (business, or individual) generally with the aim of promoting economic and social policy. Although commonly extended from the government, the ter ...
in the Emmen region to attract new businesses and industries, the available areas on a new developed industrial estate and the high
unemployment Unemployment, according to the OECD (Organisation for Economic Co-operation and Development), is people above a specified age (usually 15) not being in paid employment or self-employment but currently available for Work (human activity), w ...
in this region, initiated the move to the other part of the country and to relocate the factory. The available workers, although often poorly technically educated, could with help of the local technical schools and the company's own internal technical education be transformed to well skilled employees. In the years to follow, the management is being transferred to the sons of Mr. J.W. Pelger. Mr. K.D. Pelger becomes technical director of the factory in Emmen. Mr. W.C. Pelger becomes sales director of the Rotterdam sales office, which stayed in Rotterdam until 1971. The company grew to 130 Fte's in Emmen en 10 Fte's in Rotterdam. In 1969 the company Pelger was taken over by Mr. L Bood. Both Mr. K.D. Pelger and Mr. W.C. Pelger stayed on in the
board of directors A board of directors (commonly referred simply as the board) is an executive committee that jointly supervises the activities of an organization, which can be either a for-profit or a nonprofit organization such as a business, nonprofit organiz ...
as purchase director and sales director respectively.


Strike

In 1972 a dispute arose between the Mr. L. Bood the
managing director A chief executive officer (CEO), also known as a central executive officer (CEO), chief administrator officer (CAO) or just chief executive (CE), is one of a number of corporate executives charged with the management of an organization especially ...
and an employee Mr. A. Platje, member of the Dutch
communist party A communist party is a political party that seeks to realize the socio-economic goals of communism. The term ''communist party'' was popularized by the title of ''The Manifesto of the Communist Party'' (1848) by Karl Marx and Friedrich Engels. A ...
, about rights and obligations under the
labour law Labour laws (also known as labor laws or employment laws) are those that mediate the relationship between workers, employing entities, trade unions, and the government. Collective labour law relates to the tripartite relationship between employee, ...
. The unions got involved and strikes were initiated. The dispute ended up in the longest
strike Strike may refer to: People *Strike (surname) Physical confrontation or removal *Strike (attack), attack with an inanimate object or a part of the human body intended to cause harm *Airstrike, military strike by air forces on either a suspected ...
in the electrotechnical industry in the Netherlands, which lastet for almost half a year and several court cases were held. The Dutch Union NVV (Nederlands Verbond van Vakverenigingen) with chairman (quote: we will strike until the company ceases) was not willing to amend their demands and as a result the company went into
receivership In law, receivership is a situation in which an institution or enterprise is held by a receiver—a person "placed in the custodial responsibility for the property of others, including tangible and intangible assets and rights"—especially in ca ...
. This made an ending to the Pelger era and 102 Fte's lost their jobs. The company received national notoriety, due to all the publicity. To continue the employment of the workers a foundation was raised, named Stichting voor behoud van Werkgelegenheid: Combinatie Machines Apparaten en Constructies, or in short COMBIMAC. In the committee of the foundation the following people were appointed: Mr. P.J.S. de Jong, former
Prime Minister A prime minister, premier or chief of cabinet is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. Under those systems, a prime minister is not ...
of the Netherlands and
Minister of Defense A defence minister or minister of defence is a cabinet official position in charge of a ministry of defense, which regulates the armed forces in sovereign states. The role of a defence minister varies considerably from country to country; in som ...
. Mr. A. Jellesma, director of company W. Hubert & Co. in
Sneek Sneek (; fy, Snits) is a city southwest of Leeuwarden and the seat of the former municipality of Sneek in the province of Friesland, Netherlands. As of 2011 it is the seat of the municipality of Súdwest-Fryslân (Southwest Friesland). Th ...
and Mr. W. de Vries director of company Hydro-Holland in
Meppel Meppel (; Drents: ''Möppelt'') is a city and municipality in the Northeastern Netherlands. It constitutes the southwestern part of the province of Drenthe. Meppel is the smallest municipality in Drenthe, with a total area of about 57 km² (22 sq ...
. The company continued with 35 Fte's. In 1976 Mr. P.W. Glasmacher, working as a vice director at that time in the company, takes over the foundation and transfers it back into a company: Machine- en Apparatenfabriek Combimac B.V. In 1993 Mr. H.J. Robben en Mr. M.J.T. de Zwart, by means of a
management buyout A management buyout (MBO) is a form of acquisition in which a company's existing managers acquire a large part, or all, of the company, whether from a parent company or individual. Management-, and/or leveraged buyout became noted phenomena of 1 ...
, took over the company.


Products


Electric motors


Naval ships

The company started in 1919 as a repair shop for direct current machines and transformed during the history into a designer and manufacturer of special electric motors. These electric motors are designed to drive and rotate all kinds of equipment, including
pump A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action, typically converted from electrical energy into hydraulic energy. Pumps can be classified into three major groups according to the method they u ...
s,
compressors A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. An air compressor is a specific type of gas compressor. Compressors are similar to pumps: both increase the pressure on a fluid and both can transp ...
,
winch A winch is a mechanical device that is used to pull in (wind up) or let out (wind out) or otherwise adjust the tension of a rope or wire rope (also called "cable" or "wire cable"). In its simplest form, it consists of a spool (or drum) attache ...
es, thrusters and
radar Radar is a detection system that uses radio waves to determine the distance (''ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, w ...
systems, such as the
SMART-L SMART-L (Signaal Multibeam Acquisition Radar for Tracking, L band) is a long-range naval search radar introduced in 2002 by Thales Nederland, formerly Hollandse Signaalapparaten (Signaal). The digital antenna array has 24 elements; all are used ...
. Throughout the history the development of dedicated electric motors on board
naval vessel A naval ship is a military ship (or sometimes boat, depending on classification) used by a navy. Naval ships are differentiated from civilian ships by construction and purpose. Generally, naval ships are damage resilient and armed with w ...
s became more prominent. The first motors supplied were
shock Shock may refer to: Common uses Collective noun *Shock, a historic commercial term for a group of 60, see English numerals#Special names * Stook, or shock of grain, stacked sheaves Healthcare * Shock (circulatory), circulatory medical emergen ...
resistant low magnetic direct current motors in the 1950s for the Dutch
minehunter A minehunter is a naval vessel that seeks, detects, and destroys individual naval mines. Minesweepers, on the other hand, clear mined areas as a whole, without prior detection of mines. A vessel that combines both of these roles is known as a ...
s. Direct current motors nowaday are being replaced by alternating current motors for usage on board MCMV's ( mine counter measures vessels) or Minehunters and Minesweepers. Two different types of motors are used: low magnetic and low magnetic strayfield compensated. The latter is a
low magnetic electric motor A low magnetic electric motor (or non magnetic electric motor) is an AC motor, AC or DC motor with a reduced Magnetic field, magnetic stray field signature. Description Low magnetic or nonmagnetic electric motors are used on board mine counterme ...
provided with compensating coils, which reduce the emanating
magnetic Magnetism is the class of physical attributes that are mediated by a magnetic field, which refers to the capacity to induce attractive and repulsive phenomena in other entities. Electric currents and the magnetic moments of elementary particle ...
fields, providing a reduced magnetic and acoustic signature, to avoid
sea mines A naval mine is a self-contained explosive device placed in water to damage or destroy surface ships or submarines. Unlike depth charges, mines are deposited and left to wait until they are triggered by the approach of, or contact with, any ve ...
to magnetically or acoustically activated. The development of shock proof electric low noise motors started in the 1960s for usage on board the Dutch Dolfijn class
submarine A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely op ...
s.


Tanks

In the 1970 's contact was made with the German company
AEG Allgemeine Elektricitäts-Gesellschaft AG (AEG; ) was a German producer of electrical equipment founded in Berlin as the ''Deutsche Edison-Gesellschaft für angewandte Elektricität'' in 1883 by Emil Rathenau. During the Second World War, AEG ...
in
Hamburg (male), (female) en, Hamburger(s), Hamburgian(s) , timezone1 = Central (CET) , utc_offset1 = +1 , timezone1_DST = Central (CEST) , utc_offset1_DST = +2 , postal ...
en
Essen Essen (; Latin: ''Assindia'') is the central and, after Dortmund, second-largest city of the Ruhr, the largest urban area in Germany. Its population of makes it the fourth-largest city of North Rhine-Westphalia after Cologne, Düsseldorf and D ...
. This company was a major sub supplier to the German company
Krauss-Maffei KraussMaffei is a German manufacturer of injection molding machines, machines for plastics extrusion technology, and reaction process machinery. It was acquired by ChemChina in 2016. History Locomotives KraussMaffei was formed in 1931 from a me ...
AG (nowadays:
Krauss-Maffei Wegmann Krauss-Maffei Wegmann GmbH & Co. KG (KMW) is an arms industry company based in Munich, Germany. The company produces various types of equipment as well as rail locomotives, tanks, self-propelled artillery, and other armoured vehicles. KMW was ...
) designer of the
Leopard 2 The Leopard 2 is a 3rd generation main battle tank originally developed by Krauss-Maffei in the 1970s for the West German army. The tank first entered service in 1979 and succeeded the earlier Leopard 1 as the main battle tank of the West Germ ...
battle tanks. As a result of the Dutch Army procurement of this tank and the industrial compensation obligations, Combimac became co-manufacturer of the company AEG and supplied several electric motors for specific drives during the 1980s. In the same period NBC electric fan units had been developed for the French company Éstablissements Neu (currently: Howden) in
Lille Lille ( , ; nl, Rijsel ; pcd, Lile; vls, Rysel) is a city in the northern part of France, in French Flanders. On the river Deûle, near France's border with Belgium, it is the capital of the Hauts-de-France Regions of France, region, the Pref ...
for use on board the French AMX30 battle tanks. At the beginning of this century direct contact was made with the French company GIAT (currently:
Nexter Systems Nexter Systems (formerly known as GIAT Industries or ''Groupement des Industries de l'Armée de Terre'', Army Industries Group) is a French government-owned weapons manufacturer, based in Roanne, Loire. Group organization The Nexter group is ...
) designer of the Leclerc battle. Two types of electric fan units were developed for the NBC (Nuclear, Bacterial en Chemical) air filter systems. In the year 2015 Krauss-Maffei Wegmann merged with the company
Nexter Systems Nexter Systems (formerly known as GIAT Industries or ''Groupement des Industries de l'Armée de Terre'', Army Industries Group) is a French government-owned weapons manufacturer, based in Roanne, Loire. Group organization The Nexter group is ...
.


Luxury yachts

In 2005 the development of rim drive thruster motors was initiated. The revolutionary compact lateral thruster was developed by two separate partnerships: Rolls-Royce with Smartmotor from Trondheim and Van der Velden® Marine Systems with Combimac. The electrical permanent magnet motor has the form of a thin ring. Its stator is incorporated in the tunnel and its rotor carries propeller blades. Waterflow through the unit is unobstructed since there is no gearbox in the tunnel, nor are struts needed to support a hub. Together these factors give a high total efficiency and reduced noise and vibration, due to no
cavitation Cavitation is a phenomenon in which the static pressure of a liquid reduces to below the liquid's vapour pressure, leading to the formation of small vapor-filled cavities in the liquid. When subjected to higher pressure, these cavities, cal ...
as result of a low tip speed of the propeller blades. The prototype was successfully tested at the MARIN (
Maritime Research Institute Netherlands MARIN, the Maritime Research Institute Netherlands, is one of the leading institutes in the world for hydrodynamic research and maritime technology. The services incorporate a unique combination of simulation, model testing, full-scale measurements ...
) The patented thruster design has won two innovation design prices. The permant magnet motor technology was also implemented for the development of the motor/generators in
hybrid drive In computing, a hybrid drive (solid state hybrid drive – SSHD) is a logical or physical storage device that combines a faster storage medium such as solid-state drive (SSD) with a higher-capacity hard disk drive (HDD). The intent is adding s ...
systems on board super yachts


Centrifugal fans

The original
centrifugal fan A centrifugal fan is a mechanical device for moving air or other gases in a direction at an angle to the incoming fluid. Centrifugal fans often contain a ducted housing to direct outgoing air in a specific direction or across a heat sink; such a ...
designs were bought from a company HSM (Heinke-Schuitema-Musselkanaal) located in the town of Musselkanaal in 1936. Throughout the history the program of centrifugal fans has been extended with various models, including
ATEX The ATEX directives are two EU directives describing the minimum safety requirements for workplaces and equipment used in explosive atmospheres. The name is an initialization of the French term ''Appareils destinés à être utilisés en ATmos ...
fans for use in hazardous environments. ATEX centrifugal fan units are built in accordance with the European directive 2014/34/EU (previously 94/9/EG). ATEX centrifugal fan units are widely used in the
biogas Biogas is a mixture of gases, primarily consisting of methane, carbon dioxide and hydrogen sulphide, produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste and food waste. It is a ...
industry to provide the combustion engine gas with ample pressure and suitable for usage in Zone 1 and 2.


Pumps

The manufacture of electrical driven
submersible pump A submersible pump (or electric submersible pump (ESP)) is a device which has a hermetically sealed motor close-coupled to the pump body. The whole assembly is submerged in the fluid to be pumped. The main advantage of this type of pump is that it ...
s was introduced during the 1960s. The company predominately produced submersible pumps for
sewage treatment Sewage treatment (or domestic wastewater treatment, municipal wastewater treatment) is a type of wastewater treatment which aims to remove contaminants from sewage to produce an effluent that is suitable for discharge to the surrounding envir ...
plants and building constructions sites. The manufacture of pumps continued until the 1990s and was ended, as the demand for these specific pumps vanished over the years.


External links


Official website

ATEX directive 2014/34/EU

Wärtsilä – Encyclopedia of Ship Technology – Rim Thruster Drive


Users


Mine Counter Measures Vessels

* ''Lerici'' class minehunter * ''Tripartite'' class minehunter * ''Oksøy'' class mine hunter * ''Huon'' class minehunter * ''Sandown'' class minehunter * ''Kormoran 2'' class minehunter * ''Katanpää'' class mine countermeasure vessel * ''Bedok'' class mine countermeasures vessel * ''Styrsö'' class mine countermeasures vessel * * ''A-class'' mine countermeasures vessel *
List of minesweeper classes This is a list of minesweeper and minehunter classes Argentine Navy * Royal Australian Navy * * – (1986–2001) * – active Belgian Navy * * Brazilian Navy * * Bulgarian Navy * Canadian Navy * * * * * * (Active) People's Li ...


Submarines

* ''Walrus'' class * ''Swiftsure'' class * ''Trafalgar'' class * ''Vanguard'' class * ''Dreadnought'' class * ''Astute'' class * ''Barracuda'' class * ''S-80'' class * ''Type 209'' submarine * ''Type 214'' submarine * ''Type 218'' submarine * ''Jangbogo III'' submarine


ATEX see also

* Electrical equipment in hazardous areas *
ATEX directive The ATEX directives are two EU directives describing the minimum safety requirements for workplaces and equipment used in explosive atmospheres. The name is an initialization of the French term ''Appareils destinés à être utilisés en ATmos ...

ATEX guidelines


References

{{reflist, 2 Electric motor manufacturers Manufacturing companies of the Netherlands Manufacturing companies established in 1919 Dutch companies established in 1919