How to Calculate the Flow Rate of an Air-Operated Double Diaphragm (AODD) Pump Vince Shiplet Jan 5, 2023, 12:00:00 AM Diaphragm Pump Flow Rate AODD Pumps In order to select the appropriate air-operated double-diaphragm (AODD) pump, it’s important to understand the required flow rate in order to achieve maximum AODD pump efficiency.