Linkage Sprayers Product Information (13176 Kb) - Fatcow
Linkage Sprayers Product Information (13176 Kb) - Fatcow
Linkage Sprayers Product Information (13176 Kb) - Fatcow
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Spraying at Angles<br />
Droplet Trajectory Comparison<br />
FrontBack<br />
FrontBack<br />
Trajectory<br />
of droplets<br />
Direction of<br />
Application<br />
50º<br />
Trajectory<br />
of droplets<br />
10º<br />
Direction of<br />
Application<br />
Flat fan nozzle<br />
Angled twin nozzle<br />
Twin Caps<br />
Twin Cap Spray Example<br />
Spraying at Angles<br />
Application speed has an important influence on<br />
droplet trajectory. The coarser the spray quality, the<br />
more important this factor becomes as larger droplets<br />
have more initial momentum and greater velocity.<br />
Traditional flat fan nozzles face vertically downward.<br />
During application the force from the driving speed<br />
deflects the downward orientated droplets forward.<br />
Consequently, when the target area is reached the<br />
droplet trajectory is forward orientated. The higher the<br />
speed the more pronounced the effect. The coverage of<br />
the back side of target plants is always compromised<br />
under these circumstances. In knockdown, pasture or<br />
fallow situations this is not an issue but particular postem<br />
applications with fungicides and insecticides can<br />
suffer from insufficient plant coverage.<br />
Hollow cone nozzles have a fit in these situations at<br />
very low speeds. However, there are a number of flat<br />
fan nozzles with an angled spray pattern available<br />
to overcome this problem more efficiently, e.g. Turbo<br />
TeeJet TwinJet, TwinJet, DG TwinJet or agrotop<br />
HiSpeed. The most versatile angle set-up for speeds<br />
up to 10 km/h consists of a twin cap nozzle body that<br />
can be fitted with conventional XR TeeJet or agrotop<br />
AirMix nozzles or any combination of them. However,<br />
the backward orientated fan orientation is, like most<br />
other angled nozzles, only 30º and therefore too low<br />
to overcome the forward orientation at higher speed.<br />
A nozzle such as the agrotop HS with a 50º backward<br />
orientation enables a backward droplet trajectory in<br />
speeds up to 15 km/h.<br />
Photos are for illustrative purposes only. Prices and specifications are subject to change<br />
without notice. Prices effective January 2013. For indicative freight prices, see page 103. 49<br />
Optima BUYERS’ GUIDE – JANUARY 2013
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