Granco Manufacturing, Inc. specializes in manufacturing self-priming rotary positive displacement ball type pumps, which are the only ball type rotary positive displacement pumps produced globally. These pumps offer advantages such as higher volumetric efficiency, lower power consumption, and easy reversibility. With pumping capacities ranging from 5gpm to over 300gpm, they are used in various industries including petroleum, industrial, special chemical, and food products. The company has a rich history dating back to 1938 when it was founded by Edwin Grandburg, and it has maintained its unique pump design since then. Granco pumps are utilized in stationary and truck-mounted applications, catering to a wide range of fluid viscosities.