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The BLA/MV single stage liquid ring vacuum pump series derive from the line BLN/MV for sizes 200, 230 and 250. Of a more compact and economic construction, of the BLA/MV pumps, due to their reduced number of internal components and simplified assembly, result in lower purchasing and especially maintenance costs. The reduced number of components for maintenance in stock, fewer parts to be aligned and sealed, reduced shaft length resulting in less deflection plus the standard use of mechanical seals, indicate that the BLA/MV pumps are a great option where medium sized vacuum pumps are concerned.


  • Some of the typical applications include:
  • In distillation process of the chemical and pharmaceutical industries, and vacuum distillation process in petroleum refineries;
  • Evaporation process of food industries, sugar or alcohol mills;
  • Bottle filling machines;
  • Degaseification of plastics and resins;
  • Sterilization process (autoclaves);
  • Drying;
  • Priming for centrifugal pumps and systems;
  • Evisceration;
  • Hospitals;
  • Pulp and paper plants.


  • Manufactured in cast iron, 304 or 316 stainless steel; or other alloys subject to future consultation;
  • Low noise and vibration levels;
  • Do not require lubrication at the operation/work sites;
  • Sealing through mechanical seals.





  • Capacity: measured in cubic meters of rarefied air at inlet pressure.
  • HP is the power absorbed at the pump shaft.
  • Vacuum: expressed in millimeters Hg using 15°C (59 F) water as service liquid.
  • Barometric pressure of 760 mmHg.
  • Service liquid with a specific gravity of 1.

Motor BHP should be 10 to 15% above indicated BHP (BHP is the power absorbed at the pump shaft).


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