Rotary lobe pumps can handle solids (e.g., fruit pieces and meat cubes), slurries, pastes, and a variety of liquids. A gentle pumping action minimizes product degradation. Special models are available for highly abrasive liquids, aggressive chemicals, or shear sensitive liquids. Rotary lobe pumps offer continuous and intermittent reversible flows and can operate dry for a brief period, only if flushed seals are used. The flow is relatively independent of changes in process pressure, too, so output is constant and continuous.