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FlowserveSIHILiquid Ring Vacuum Pumps - LEM

Liquid Ring Vacuum Pumps - LEM


Liquid ring vacuum pumps of the series LEM are single-stage displacement pumps of uncomplicated and robust construction.


  • General Industry

industry sectors

  • Food & Beverage
  • Other Industries
  • ATEX 2014/34/EG
Operating Parameters
  • Flows to 470 m³/h (275 CFM) 
  • Suction pressures to 33 mbara (0.5 psia)
  • Temperatures to 100°C (212 °F)
  • Service liquid max. admissible temperature 60°C (140 °F)
Design Range

Size Range: From DN25 (1 in) to DN65 (2 1/2 in)

Features & Benefits
  • Non-polluting due to nearly isothermal compression
  • Oil-free, as no lubrication in the working chamber
  • Handling of nearly all gases and vapours
  • Entrained liquid can be handled
  • Easy maintenance and reliable operation
  • Low noise and nearly free from vibration
  • Wide choice of material, therefore applicable nearly everywhere
  • Protection against cavitation as standard
  • Incorporated dirt drain
  • Incorporated central drain
  • No metallic contact of the rotating parts
  • ATEX compliance

Single-stage liquid ring vacuum pumps equipped with a motor carrier lantern to fit a wide variety of non-standard motors

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