Which of the following is a typical flat-fan spray angle?

Which of the following is a typical flat-fan spray angle?

• A. 65°
• B. 50°
• C. 90°
• D. 120°

Answer: (A)

The main idea here is how spray angle affects coverage and drift with flat-fan nozzles. A flat-fan nozzle delivers a fairly even, sheet-like spray, and the angle tells you how wide that sheet spreads as it leaves the nozzle.65 degrees is a standard flat-fan angle because it provides a good balance: the spray swath is wide enough to cover an area efficiently without being so wide that much of it drifts off target, and it allows neighboring nozzles to overlap slightly for uniform deposition on turf and ornamentals. A narrower angle, like 50 degrees, would make the spray narrower, requiring much closer spacing or higher overlap to achieve even coverage, which isn’t as practical in typical turf/ornamental applications. Very wide angles, such as 90 or 120 degrees, tend to spread the spray more laterally and can increase the potential for drift and uneven coverage at standard working distances.

The main idea here is how spray angle affects coverage and drift with flat-fan nozzles. A flat-fan nozzle delivers a fairly even, sheet-like spray, and the angle tells you how wide that sheet spreads as it leaves the nozzle.65 degrees is a standard flat-fan angle because it provides a good balance: the spray swath is wide enough to cover an area efficiently without being so wide that much of it drifts off target, and it allows neighboring nozzles to overlap slightly for uniform deposition on turf and ornamentals.

A narrower angle, like 50 degrees, would make the spray narrower, requiring much closer spacing or higher overlap to achieve even coverage, which isn’t as practical in typical turf/ornamental applications. Very wide angles, such as 90 or 120 degrees, tend to spread the spray more laterally and can increase the potential for drift and uneven coverage at standard working distances.