66 General Information
2. HOLLOW CONE nozzle pattern is also
slightly overlapped for uniform coverage.
Misalignment is impossible. Used for broad-
casting of herbicides or insecticides. Gives
excellent plant coverage with drops.
3. EVEN SPRAYS give an even pattern that
does not taper at the ends. They are used
only for pre-emergence brand spraying. Do
not use on a boom, the overlap would cause
double dosage.
4. FLOODING nozzles provide an extra wide,
flat spray pattern and are usually spaced
every 40 inches along the boom. There is
less drifting because the droplets are larger
and the boom can be carried closer to the
ground. Because their output is double that
of fan nozzles, they do not plug easily. They
are slightly less accurate.
5. JET or BOOMLESS nozzles provide wide
coverage (up to 50 feet from a single noz-
zle). They are used in large fields where
drifting is not a problem or for fence rows,
roadsides, or where there are many obsta-
cles a boom would hit. The pattern is easily
affected by wind conditions.
BOOM HEIGHT IS IMPORTANT
Proper boom height is important. Too much or
too little spray overlap causes skips or heavy
dosage. Refer to nozzle output charts for proper
spraying height.
SPRAY ANGLE
The spray angle of the nozzle determines the
boom height. Flooding nozzles have a wide
angle, from 115 to 147 degrees. Standard cone
and fan nozzles, from 65 to 80 degrees. The
wider the spray angle, the lower the boom can
be carried.
SPRAY COVERAGE INFORMATION
This table lists the theoretical coverage of spray
patterns as calculated from the included spray
angle and the distance from the nozzle orifice.
These values are based on the assumption that
the spray angle remains the same throughout
the entire spray distance. In actual practice, the
tabulated spray angle does not hold for long
spray distances.
Summary of Contents for 8160
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