What is an advantage of 80° flat-fan nozzles?

What is an advantage of 80° flat-fan nozzles?

• A. Lower boom height → reduced drift.
• B. Higher pressure stability.
• C. Increased drift in wind.
• D. Narrower spray pattern.

Answer: (A)

The spray angle of a flat-fan nozzle determines how wide the spray pattern spreads and how close you can run the boom to the target while still achieving good coverage. An 80° flat-fan nozzle has a relatively wide angle, so you can place the boom lower and still cover the same swath. Running the boom lower reduces the distance droplets travel before reaching the target, which limits the time wind has to carry droplets away, thereby reducing drift. This closer position also helps ensure uniform deposition across the treated area without needing higher positions that could increase off-target transport. The broader pattern at this angle is the opposite of a narrower spray, and drift control here comes from height, not a fundamental gain in pressure stability; drift is not inherently increased by using an 80° nozzle.

The spray angle of a flat-fan nozzle determines how wide the spray pattern spreads and how close you can run the boom to the target while still achieving good coverage. An 80° flat-fan nozzle has a relatively wide angle, so you can place the boom lower and still cover the same swath. Running the boom lower reduces the distance droplets travel before reaching the target, which limits the time wind has to carry droplets away, thereby reducing drift. This closer position also helps ensure uniform deposition across the treated area without needing higher positions that could increase off-target transport. The broader pattern at this angle is the opposite of a narrower spray, and drift control here comes from height, not a fundamental gain in pressure stability; drift is not inherently increased by using an 80° nozzle.