Linkage Sprayers Product Information (13176 Kb) - Fatcow

Broadacre nozzles
Nozzle Material and Wear
Nozzle orifices are produced with different materials,
the most durable of them being ceramic, followed by
steel and various polymers. Nozzles with brass orifices
are made from the least durable material.
Worn or damaged nozzles will produce an uneven
spray pattern with serious implications for efficacy.
Worn or damaged nozzles in spray units without an
automatic rate controller will increase the output, spoil
calibration, and may create unnecessary extra costs due
to over application.
Most new sprayers have rate controllers that will
compensate by measuring liquid flow and adjust
accordingly. However, they will cause undersupply to
the rest of the nozzles to adjust for the extra output of
the worn nozzles. Again, this may result in an uneven
spray pattern.
Nozzles should be checked for wear at least once per
season. As a rule of thumb, nozzles made from durable
plastic will need replacement every two years, nozzles
with steel orifices should be replaced every three years
and nozzles with ceramic tips should be replaced
every four to five years.
These timeframes will decrease with heavy use,
especially when spraying abrasive chemicals.
EFFECT OF NOZZLE MATERIAL ON NOZZLE WEAR: ACCELERATED WEAR TEST
% Change In Flow Rate
70
60
50
40
30
20
10
0
-10
0 20 40 60 80 100 120 140 160 180 200
Time (min)
TP1100
4 Brass
XR1100
4VP (Polymer)
XR1100
4VS (Steel)
XR1100
4VK (Ceramic)
Source: TeeJet
UNIFORMITY OF SPRAY
Uniformity of spray is affected by:
• Worn or damaged nozzles
• Nozzle type, spacing and height
• Boom movement, stability
• Liquid properties (adjuvants can have an
uniforming effect, e.g. LI 700)
NEW SPRAY TIPS
Produce a uniform distribution
when properly overlapped.
WORN SPRAY TIPS
Have a higher output with more spray
concentrated under each tip.
DAMAGED SPRAY TIPS
Have a very erratic output – over applying
and under applying.
Source: TeeJet
Photos are for illustrative purposes only. Prices and specifications are subject to change
without notice. Prices effective January 2013. For indicative freight prices, see page 103. 43
Optima BUYERS’ GUIDE – JANUARY 2013