Versa-Matic air-operated diaphragm pumps have a robust leak-free bolted design which reduces maintenance downtime and are self-priming to handle solids up to 3 inches. These units provide an an ideal combination of flow, size and portability as compared to other pump models, with a maximum flow rate of 163 gpm (617 lpm). They further feature the patented Elima-Matic air valve system for a no stalling, lube-free performance and are available in 1/4 inch, 3/16 inch and 3/8 inch diameter variants on Raptor Supplies.