Put simply: if you take a “T” shaped pipe and pass a fluid (such as air or water) through the straight section, a vacuum will be created on the shorter side due to the Venturi effect.

The heart of the system is the nebulizer-venturi unit into which the suspension ... Compressed air and vacuum pumps, along with the necessary controls and flow indicators, are built into the ...

The heart of the system is the nebulizer-venturi unit into which the suspension ... Compressed air and vacuum pumps, along with the necessary controls and flow indicators are built into the ...