Nozzle Sizing and Calibration Charts

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About Tom Wolf (Nozzle_Guy)

Tom Wolf is based in Saskatoon, SK and has 33 years research experience in the spraying business. He obtained his BSA (1987) and M.Sc. (1991) in Plant Science at the University of Manitoba, and his Ph.D. (1996) in Agronomy from the Ohio State University. Tom focuses on practical advice that is research-based to improve the efficiency of producers.

See all posts by Tom Wolf (Nozzle_Guy).

Need to find the right nozzle size for your application?  Sometimes a simple chart is the easiest way to figure things out.  Print it and place it in your sprayer cab.

In this chart, identify your water volume along the top row, and follow the column until you encounter the travel speeds you’re interested in.

Once you’ve encountered your travel speed, move along the row to the left to identify the nozzle size and spray pressure.

Make sure that your travel speeds are achieved at a pressure that’s right for the nozzle you’re using. For most air-induced nozzles, this will be about 60 to 70 psi (highlighted).

Once you’ve decided on a nozzle size, the travel speed column for that size becomes the travel speed range at various pressures. Avoid operating a low-drift spray below 30 psi – its pattern will be too narrow and likely its spray quality will be too coarse for good results.

Click on the images or text below to download a high quality pdf version of each chart, starting from the top with US, 15″ spacing, then US, 20″, then US 30″, then metric, 50 cm. Print, laminate, and place them in your sprayer cab.

Calibration Chart (US, 15 in)

Download Application Chart (US units, 15″ spacing)

Calibration Chart (US, 20 in)

Download Application Chart (US units, 20″ spacing)

Calibration Chart (US, 30 in)

Download Application Chart (US units, 30″ spacing)

Application Chart 2015 (metric)

Download Application Chart (metric, 50 cm spacing)

Make your own chart using this Excel Template.