Operator's Manual

6
BEFORE SPRAYING
NOZZLE SELECTION GPA/GAL FT
2
Refer the nozzle charts to be sure that your spray
nozzles have the capacity necessary to achieve
the application rate selected.
To select the proper nozzle, you need to know the
following information:
1. Recommended chemical application rate in
gallons per acre or gallons per 1000 sq. ft. or liters
per hectare.
2. Average Vehicle speed in Miles per hour or
kilometers per hour.
3. Nozzle spacing (20 inches or 50 centimeters).
With this information you can calculate the volume
per minute per nozzle, using one of the three
formulas listed. Use Gal/Min and pressure or Lit/
Min and pressure to select the appropriate nozzle
from the corresponding charts.
EXAMPLE (GPA FORMULA)
Application Rate = 75 Gallons/Acre
Vehicle Speed = 4 M.P.H.
Nozzle Spacing = 20 inches
75 G.P.A. x 4 M.P.H. x 20 = 1.00 G.P.M.
5940 (per nozzle)
With 1.00 G.P.M. and a pressure of 40 P.S.I. you
would select Nozzle No. 95-9188.
EXAMPLE (GAL.1000 FT
2
FORMULA):
Application Rate = 1.70 Gal./1000 sq. ft.
Vehicle Speed = 4 M.P.H.
Nozzle Spacing = 20 inches
1.70 GAL/1000 FT x 4 M.P.H. x 20 = 1.00 G.P.M.
137 (per nozzle)
EXAMPLE (LIT/HA FORMULA):
Application Rate = 907 lit/hectare
Vehicle Speed = 5 km/h
Nozzle Spacing = 50 cm
907 lit/ha x 5 km/h x 50 = 3.78 lit/min.
60,000 (per nozzle)
With 3.78 LIT/HA and a pressure at 275 kPa you
would select nozzle No. 95-9188.
NOTES: