Aro 666053 3EB Non-Metallic Air Pump - 1/2in, 13 GPM, 100 PSI, Santoprene
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This air operated diaphragm pump offers corrosion resistant construction. A double diaphragm pump is a positive displacement pump uses a 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 begins as air pressure is applied.