Elmo Rietschle a company history

Both Elmo and Rietschle can look back on an impressive string of successes that have marked industry milestones for more than one hundred years.

As early as 1903 Elmo was granted the Imperial Patent for the world’s first liquid ring vacuum pump; just three years later a smaller Elmo vacuum pump was used in Germany’s first vacuum cleaner. The first side channel blower was introduced in 1963 and revolutionized the vacuum and pressure market. The emphasis on designing and building the highest quality machines and providing engineering support of outstanding professionalism has been the trademark of Elmo. After the turn of the millenium and its spin-off from Siemens, Elmo merged with Nash Industries, a former US competitor, to form nash_elmo.

Driven by the ingenious Werner Rietschle, who started his own company after World War II, Rietschle soon became a well-known supplier of fine vacuum pumps and compressors, earning itself the reputation of being highly customer-focussed, flexible and innovative. In 2002 the company was acquired by Thomas Industries to become Rietschle Thomas. By then it had built an impressive network of production facilities and sales offices worldwide. Special emphasis was put on providing after sales service and support for thousands of customers who use the many different product types Rietschle built.

The Elmo Rietschle brand was created when the renowned vacuum companies Elmo Technology and Rietschle joined forces within Gardner Denver, a recognized leader providing compressed air and gas, vacuum and fluid transfer technologies to industries throughout the world.

We offer an outstanding choice of side channel blowers, radial fans, dry running and oil lubricated rotary vane vacuum pumps and compressors, screw vacuum pumps as well as liquid ring, rotary lobe and claw vacuum pumps and compressors.


Elmo Rietschle Milestones

  • 1903 First Elmo liquid ring vacuum pump and first vacuum cleaner using an Elmo pump
  • 1950 Werner Rietschle founds Werie; launch of oil-lubricated rotary vane
  • 1960 Launch of the dry-running rotary vane by Rietschle and construction of the aluminium foundry
  • 1960 First side channel blower by Elmo
  • 1998 Rietschle claw pumps and compressors are launched
  • 2000 Elmo spins off from Siemens as elmo vacuum technology
  • 2002 Elmo merges with Nash to form nash_elmo
  • 2002 Rietschle is acquired by Thomas Industries to form Rietschle Thomas
  • 2005/6 Gardner Denver acquires nash_elmo and Rietschle Thomas


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Response was same day, problem diagnosed & parts ordered same day, compressor running by next lunchtime..." The response was the same day and the problem was diagnosed and parts ordered on the same day. The compressor was repaired and up and running the next lunchtime. As always their response is very ...

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