Aro 666053 344 Double Diaphragm Air Pump - 1/2in, 13 GPM, 100 PSI, PTFE
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ARO air-operated double diaphragm pump is a positive displacement pump that uses two sets of flexible membranes to pump fluids and a series of check valves to ensure fluid can only travel in one direction through the chamber. Pump cycling will begin as air pressure is applied.