What is the best flat-fan angle for short booms (20-35 ft)?

What is the best flat-fan angle for short booms (20-35 ft)?

• A. 60°
• B. 70°
• C. 80°
• D. 90°

Answer: (C)

The key idea is how the flat‑fan angle affects how wide the spray pattern lands on the target at a given boom height. When the booms are relatively close to the target (20–35 ft away), you want a pattern that covers the width of the target area with good overlap between adjacent nozzles. An 80° flat‑fan angle provides a broad but controllable spray footprint that achieves uniform coverage without spraying too far beyond the target. A narrower angle, like 60° or 70°, would produce a tighter pattern and can leave gaps between nozzle swaths, risking incomplete coverage. A very wide or extreme 90° angle would spread the spray too far to the sides, increasing the chance of off‑target deposition and inefficient use of product. Therefore, 80° is the best balance for short booms, giving adequate coverage with proper overlap.

The key idea is how the flat‑fan angle affects how wide the spray pattern lands on the target at a given boom height. When the booms are relatively close to the target (20–35 ft away), you want a pattern that covers the width of the target area with good overlap between adjacent nozzles. An 80° flat‑fan angle provides a broad but controllable spray footprint that achieves uniform coverage without spraying too far beyond the target.

A narrower angle, like 60° or 70°, would produce a tighter pattern and can leave gaps between nozzle swaths, risking incomplete coverage. A very wide or extreme 90° angle would spread the spray too far to the sides, increasing the chance of off‑target deposition and inefficient use of product. Therefore, 80° is the best balance for short booms, giving adequate coverage with proper overlap.