Lobe pumps are positive displacement pumps that operate similarly to external gear pumps as fluid and other product flows around the interior of the casing rather than between the lobes. They differ from external gear pumps, however, as the lobes do not make contact with each other. Because rotary lobe pumps are non-contacting and have large pumping chambers, they can handle solids without damage, such as cherries or olives. They also handle liquid, slurries and paste.
Their excellent sanitary qualities, high efficiency, and clean-in-place and sterilize-in-place characteristics make them a solid choice in food, beverage, pharmaceutical and biotechnology industries. These pumps are also found in chemical and in pulp and paper industries.