When using flood flat-fan nozzles, what pressure is recommended for optimal operation?

Flood flat-fan nozzles operate most effectively within a pressure range of 10 to 25 psi. This pressure range ensures that the nozzle produces a wide and even spray pattern, allowing for better coverage of the targeted area while minimizing drift and maximizing the efficiency of pesticide application. At this pressure, the droplets generated are of optimal size, facilitating effective penetration into the target vegetation without the risk of creating excessively fine droplets that could drift away or evaporate.

Using higher pressures, such as those in the 30 to 50 psi or 50 to 75 psi ranges, may lead to finer droplet formation, which can exacerbate drift and result in uneven application. Similarly, lower pressures, like 5 to 10 psi, could result in insufficient atomization and poor coverage, making it difficult to achieve the desired pest control. Therefore, the 10 to 25 psi pressure range is the most suitable for achieving the best performance from flood flat-fan nozzles.