The ARO Pro Series portfolio of diaphragm pumps has been extended by enhancing the 2- and 3-in. ported metallic pump models to include additional materials of construction. Previously offered only in aluminum, the series now includes 2- and 3-in. ported pumps in cast iron and stainless steel. All three materials are available for all port sizes of the series, making them suitable for plant maintenance, OEM applications, primary and secondary production, and bulk transfer. Like their aluminum counterparts, the new models feature patented air valve technology that eliminates pump stalling by utilizing an “unbalanced” design. By creating an optimal pressure differential, air valves do not center even under low air inlet pressures. Unbalanced valves reduce production loss and downtime by providing better shift signals and delivering faster trip-over with more flow (172 gpm and 237 gpm, respectively, for 2- and 3-in. models).
Ingersoll Rand, Bryan, OH; 800-495-0276; http://fluids.ingersollrand.com