Reference Guide

CalculatingNozzleCapacity
CalculatinginUSGallonsperAcreor
USGallonsper1000ft
2
Tocalculatethenozzlecapacityyouneedtoknowthe
following:
•Therecommendedapplicationrateformaterialbeing
usedinUSgallonsperacreorper1000squarefeet.
•Thepreferredvehiclespeedinmilesperhour.
•Thenozzlespacingalongboom(20inches).
Withthisinformationyoucancalculatethevolumeper
minute(orowrate)foreachnozzleusingthefollowing
formula.
GPAExample:
(GPAXMPHX20*Inches)
GPMpernozzle
=
5,940
*Toronozzlespacingis20inches
USGallonsperAcreFormula
ApplicationRate(AR)=45USGallonsperAcre
VehicleSpeed(VS)=4MPHNozzleSpacing(NS)=20
inches
(ARXVSXNS)(45X4X20)
5,940
=
5,940
=
0.61GPMper
nozzle
With0.61GPMandrecommendedpressureof30-50psi
selectthegraynozzlewithToropartnumber95-9224.
U.S.Gallonsper1000ft
2
Example:
(Gallonsper1000ft
2
XMPH
X20*Inches)
GPMpernozzle
=
136
*Toronozzlespacingis20inches
U.S.Gallonsper1000ft
2
Formula
ApplicationRate(AR)=1U.S.Gallonsper1000ft
2
VehicleSpeed(VS)=4MPHNozzleSpacing(NS)=20
inches
(ARXVSXNS)(1X4X20)
136
=
136
=
0.59GPMper
nozzle
With0.59GPMandapproximatepressureof30-50psi
thenozzlewithToropartnumber95-9224wouldbe
selected.
CalculatinginLitersperHectare
Tocalculatethenozzlecapacityyouneedtoknowthe
following:
•Therecommendedapplicationrateformaterial
beingusedinlitersperhectare.
•Thepreferredvehiclespeedinkilometersperhour.
•Thenozzlespacingalongboom(50centimeters).
Withthisinformationyoucancalculatethevolumeper
minute(orowrate)foreachnozzleusingthefollowing
formula.
L/haExample:
(LitersperhaXKmPH
X50*cm)
LitersaMinuteper
nozzle
=
60,000
*Toronozzlespacingis50
centimeters
USGallonsperAcreFormula
ApplicationRate(AR)=910LitersperHectare
VehicleSpeed(VS)=5KmPHNozzleSpacing(NS)=
50centimeters
(ARXVSXNS)(910X5X50)
60,000
=
60,000
=
3.79Litersa
minutepernozzle
UseL/minuteandPressuretoselectanappropriate
nozzlefromnozzleselectiontablesinthefollowing
section.
With3.79L/minuteandrecommendedpressureof2.7
BarthenozzlewithToropartnumber95-9188would
beselected.
17