Double Head Diaphragm Vacuum Pump

The diaphragm pump, also called AODD (Air Operated Doube Diaphragm) is a type of double diaphragm positive displacement pump operated by using compressed air. The diaphragm pump employs a pneumatic valve that directs compressed air back and forth between the two sides of the pump.An Air-Operated Double-Diaphragm pump (AODD) is a type of positive displacement (PD) pump. It consists of two pumping chambers that are alternately filled and discharged by the movement of flexible diaphragms.Diaphragm. Diaphragm Vacuum Pumps are dry pumps that operate using a pulsing motion that opens and closes valves to move air. This design eliminates the need for oil.