Performing in the most challenging applications, air-operated double-diaphragm (AODD) pumps deliver unique benefits unrivaled by other pump technologies.
AODD pumps are air- (or natural gas-) operated displacement-type pumps that significantly differ from all other positive-displacement pumps. As a result of air pressure acting on the entire surface of the diaphragm, the diaphragm is in a balanced condition while pumping. This measurably extends diaphragm life over that of mechanically operated diaphragm pumps.
Because compressed air is limited, the maximum pressure developed by the pump is also safely limited. Thus, AODD pumps are appropriately selected for on-off cycling, on-demand intermittent and up to continuous operating requirements.
Although the AODD pump is a displacement type of pump, it is actually a hybrid and defies strict classification. While its pressure-versus-capacity characteristics resemble those of a centrifugal pump, it is best defined as a sealless, non (or semi) positive-displacement pump.