The Venturi Effect

The Venturi Effect

The venturi effect is based on the Bernoulli principle. It states that fluids at higher velocity have a lower pressure than fluids at a lower velocity. Vac Cubes vacuum pumps have been designed so that compressed air is constricted into a nozzle, which speeds up the air flow so that it exits the nozzle at supersonic speeds. Accordingly this air has a very low pressure. This bead of supersonic air is moving through a “vacuum” chamber on its way to the next receiver nozzle. The air in the vacuum chamber starts at atmospheric pressure which is much higher pressure than the fast moving bead of air. Air seeking equilibrium moves from the higher pressure area to the lower pressure area and continues out with the flow of air through the nozzle out of the pump.