Self-priming pumps are equipped with a Venturi system. They are suitable for conveying clean water and nonaggressive chemical fluids, even with liquids mixed with gas, from wells in continuous service.
They are also suitable for increasing water pressure in centralized water systems, for small irrigation systems, for watering gardens, for washing systems with water jets, for fountains, etc.
It is normally advisable to install a foot valve on the suction end.