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Diaphragm pumps are positive displacement pumps that utilize flexible membranes called diaphragms to move and transfer liquids. These pumps typically have two chambers that siphon and discharge fluids in an alternating sequence that results in one continuous exit stream. Diaphragm pumps are available in either manual or air-operated double-diaphragm (AODD) variants that can be used in dewatering, moving slurries, sludges, and other low-pressure liquid transfer applications.