Most are self-priming pumps, so they can start pumping even if they dry out. Air-operated diaphragm (AOD) pumps draw power from pneumatic pressure or air pressure. You might know them as liquid ...

Use for Oil Transfer, Oil Evacuation, Water, Antifreeze, & Windshield Wash Solution Max Air Use at 100 PSI: 28 SCFM Air Inlet: 1/4" NPT, Fluid Inlet/Outlet: 3/4" Free Flow: 16 GPM ...

A key player in this field is the diaphragm pump. This pump stands out from traditional options by employing a unique mechanism to effectively and reliably transfer fluids. That said ...