Effects of Nozzle Wear on Air Consumption

Nozzle No.
Orifice Size
Air Flow
in CFM
Increase in Air Consumption
No. 4 1/4″ (6.5mm) 81 cfm
No. 5 5/16″ (8.0mm) 137 cfm 69% more than No.4
No. 6 3/8″ (9.5mm) 196 cfm 43% more than No.5
No. 7 7/16″ (11.0mm) 254 cfm 29% more than No.6
No. 8 1/2″ (12.5mm) 338 cfm 33% more than No.7

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