Gorman-Rupp Industries' gear pumps has a modular design that allows a wide variation of flow ranges using standard parts set. These pumps provide a broad class of industrial pumps in flow ranges from 10 ml. per minute to 3,8 litres per minute. All of the gear pumps are self-priming and are “constant flow” pumps when RPM and differential pressure are constant. The materials of construction for bodies, gears and seals, provide a wide range of fluid compatibility.