The Technology

Traditional Air-Assist Atomization


Traditional nozzles often create inconsistently sized droplets.  They also require large amounts of high pressure gas to create small droplets.   In addition, these nozzles perform poorly with high viscosity fluids. 


CounterFlow Technologies

Countercurrent shear was first systematically examined in the laboratory in the late 1980s. We used this research to develop a unique design in which the fluids travel in opposite directions.  This creates the most efficient spray output. 

Our nozzle configuration shown above illustrates how this concept efficiently atomizes viscous liquids. The liquid stream is introduced through a central tube while gas is added in a secondary passageway. The liquid-gas counterflow creates the ideal mixture for spraying upon leaving the nozzle.


Retrofitting Common Hardware to CounterFlow Technology

Common Nozzle

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Traditional Nozzle

CounterFlow Nozzle

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Counterflow Nozzle


The Atomization of Glycol (viscosity = 40 mPa·s) at similar operating flow rates and pressures.

Traditional Air-Assist Atomization With High Mean Stress

CounterFlow Air-Assist Atomization With High Turbulent Stress


View the latest document about CounterFlow Technologies

Characterization of a Novel Energy Efficient Atomizer Employing Countercurrent Shear

        A. Hoxie, E. Johnson, V. Srinivasan, P. Strykowski
University of Minnesota Duluth, USA
University of Minnesota Twin Cities, USA