How our patented nozzle works: The heart of the air assisted electrostatic sprayer is our patented “air atomizing induction charging” nozzle, which was invented and refined at the University of Georgia. Air and liquid enter the rear of the nozzle separately. The air moves through the nozzle at a high speed and intersects the liquid at the nozzle tip (Figure 4), causing the formation of spray droplets that are 30 to 60 microns in diameter (Figure 5). The air pressure required is 15 to 60 psi, and the liquid pressure is below 30 psi. In comparison, a hydraulic sprayer would require nearly 3,000 psi to achieve equivalent atomization.