Miller 500 BW, Operator'S Manual, Page: 30 / 96

26
Tip Selection
Proper application of agricultural chemicals is essential to good performance. Applying the correct
amount and effectively covering the target are key factors in proper application. Too often, poor
weed, disease, or insect control can be traced to problems with spray distribution along the boom.
Spray distribution refers to the uniformity of spray coverage across the boom swath. The goal in
broadcast spraying is even (uniform) spray distribution. Factors affecting spray distribution include
nozzle type, spray pattern angle, nozzle spacing and boom height. When selecting nozzles to be
used on a boom for broadcast application, finding the correct combination of these factors is impor-
tant. The nozzle spray angle and the height of the boom will determine the overlap between adja-
cent tips, which is critical to uniform distribution.
Unless otherwise specified at the time of manufacture, your sprayer is equipped with flat fan spray
nozzles having the following characteristics:
•
Volume: approximately 20 GPA at 30 psi at 5 mph
•
Spray angle: 110 degrees
•
Nozzle spacing: 20 inches
If you want to change the application rate or the type of nozzle, the tables on the following pages
provide the information needed to help you choose the right nozzle for common applications. (Refer
to the product catalog for more specific information).
IMPORTANT: Your chemical supplier can give you accurate information about the recom-
mended chemical mixture and the application rate. Check with your supplier before you
select a different tip.
You must know the following information to use the nozzle selection tables:
•
The type of nozzle (flat fan, cone, or flood)
•
The spraying pressure you will be using (psi)
•
The application rate (GPA)
•
The nozzle spacing (in inches)
•
The operating speed in miles per hour