Air Poll Jet Venturi is a device especially designed to scrub huge volumes of gases with the help of "Vena Contracta". There is sudden expansion and contraction near the venture throat where the velocity of the gas is very high and separation takes place which is known as Vena Contracta.The Motive Fluid, generally water leaves nozzle in a hollow cone spray, creating a draft which draws the gases and vapors in to the moving stream where it is continuously scrubbed.Jet Venturi Scrubber is highly efficient for the fume/gas scrubbing.