Omac B Series Rotary Lobe Pump

Omac’s B series lobe pumps command the utmost respect for their physico-chemical and hygienic characteristics. Appreciated all over the world for their solidity and performance, they are among the most reliable pumps in terms of durability, ease of maintenance and containment of operating costs.

The OMAC lobe pump is modular, and designed in such a way that the main parts (rotors, seals) can be added or exchanged according to application requirements. The mechanical parts have extreme rigidity and compactness with double preassembled tapered roller bearings, shafts, gears and oversized support. These, together with the quality and precision of the workings, allow Omac’s pumps to obtain tighter tolerances (the rotors do not have no point of contact) ensuring the efficiency and reliability of the pump. A wide range of seals and gaskets is available, and will be carefully chosen according to the characteristics of the product transferred.


  • Range consists of 16 models
  • Available in the following versions: ST with standard tolerances, SM with increased tolerances (both available with AISI 316 or Duplex stainless steel shafts)
  • Flow rates range from 0.05 to 200 m 3/h
  • HP with axle rotors in Acteon (stainless steel anti-friction) and Duplex shafts for counterpressure up to 20 Bar
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