|Vaccon VP Series vaccum pumps employ the Venturi Effect to create vaccum. The Venturi effect is the phenomenon that occurs when a fluid that is flowing through a pipe is forced through a narrow section, resulting in a decrease in its pressure and an increase in its velocity (or speed). The Venturi Effect is similar to the behavior seen when one puts their thumb over the end of a garden hose. The fluid, in this example water, will increase in speed. In a venturi vacuum pump, the same effect occurs with the fluid (air) passes through the narrowed section in the pump cartridge. The fluid's increased velocity in both examples creates a pressure decrease, or vacuum.
The Venturi effect is used in modern devices such as carburetors, water aspirators, cargo eductors, water evacuation from ship bilges, atomizers, wine aerators. and foam firefighting nozzles.
Italian physicist Giovanni Battista Venturi, a priest and scientist who lived from 1746-1822, discovered the effect, and is also credited with the invention of the Venturi pump.
Read more about the Venturi Effect and Giovanni Venturi.
Giovanni Battista Venturi