The AODD pumps feature the performance capabilities required for use in waste-transfer applications. The pumps are 4-inch pumps that can safely and efficiently handle solids as large as 1-3/8-inch, which is a crucial consideration in waste-transfer operations. The pumps also offer an elastomer option that ensures maximum solid’s passage, long pumping life and maximum mean time between repair. The AODD pumps also feature the company’s patent-pending air distribution system (ADS), which offers waste-transfer applications additional operational flexibility and cost savings. This flexibility is created by the state-of-the-art Efficiency Management System (EMS), which optimizes the ADS for the actual operation parameters regardless of the application demands or pump size. The EMS allows the operator to use an integrated control dial to select the efficiency point and flow rate that best suits the application, resulting in increased cost savings.