The Clean Blast Venturi Blower operates on the venturi principle that uses small volumes of high velocity air to accelerate large volumes of low velocity air. Clean Blast Venturi Blower, air enters a concentric manifold chamber surrounding a venturi throat. A series of orifices located symmetrically around the chamber are positioned to expand the Air into the reaction zone downstream of the throat. It is here that the high velocity air imparts its energy to slower moving air and accelerates it which in turn draws more air through the throat into the reaction zone. Direction and expansion rate of air is controlled by a conical-shaped diffuser.