Liquid ring vacuum pump – L-BL2

Liquid ring vacuum pump – L-BL2

Elmo Rietschle L-Series - without external water supply

The Elmo Rietschle L-BL2 (L-200) liquid ring vacuum pump range comprises compact plug-and-play systems for easy on-site installation. The pumps are air-cooled, 100 % oil-free and do not require additional water during operation. In addition, the vacuum pumps provide a much higher resistance to water and steam than alternative systems.

Thanks to contact-free compression, they are virtually wear-free in operation and need no periodic maintenance. The patented discharge-air cooling system ensures that the pumps will not heat up by more than 15 K above room temperature. The pumps work reliably in continuous operation and are steam resistant and insensitive to condensation of the pumped air.

Pump units

Vacuum power units of the L-BL2 Split type are standardized liquid ring pump circulation systems with patented exhaust air cooling for large volume flows. A considerable amount of the water contained in the cool exhaust air condenses, remains in the system, and is thus available as operating water. As a result, many applications no longer require additional operating water.

Our low-maintenance vacuum pumps have been tried and tested for many years in numerous industrial applications. A comprehensive product range of accessories is available for this pump type.


The L-BL2 split range family of pumps allow the user to take advantage of the Elmo Rietschle L-BL technology in applications where higher air volume is needed or for special process requirements. They are suitable for applications involving aggressive suction materials and can also be implemented e.g. in the food & beverages industry where they are available in versions made entirely of stainless steel.

We also sell versions equipped with all the valves including tubing required for integration into a CIP cleaning process. Air-to-water heat exchangers or plate heat exchangers are also on offer.

Performance overview

  • Capacities ranging from 27 to 1200 m³/hr
    (15.9 to 705.9 cfm)
  • Vacuum up to – 000 bar
  • Pressure up to + 1.0 bar
  • Catalog - L-Series
  • Brochure
  • L-Series - Liquid Ring Systems
  • L-Series

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