User guide

TM
Model 4900M0247-01
Rev. 5/14 5-3
Rate Charts
CENTRIFUGAL PUMP FERTILIZER RATES
Orifice
Diameter
Gallons per Acre (at 5 mph)
10 psi 20 psi 30 psi 40 psi 50 psi 60 psi 80 psi 100 psi
.020" 1.0 1.4 1.7 2.0 2.2 2.5 2.8 3.2
.025" 1.5 2.2 2.7 3.1 3.5 3.8 4.4 4.9
.028" 1.9 2.7 3.3 3.8 4.3 4.7 5.5 6.1
.032" 2.6 3.7 4.5 5.3 5.9 6.5 7.5 8.3
.037" 3.4 4.7 5.9 6.7 7.6 8.3 9.5 10.7
.041" 4.1 5.9 7.2 8.3 9.3 10.2 11.8 13.1
.048" 5.6 7.9 9.7 11.3 12.6 13.8 15.9 17.8
.055" 7.4 10.5 12.9 14.8 16.6 18.2 21.0 23.5
.065" 10.3 14.6 17.8 20.6 23.0 25.3 29.2 32.6
The following table can be used to determine which orifice plates can be used to achieve the desired gallons per acre
application rate for fertilizer. The GPA is calculated at 5 mph with a 30" width.