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How to choose the correct blasting nozzle size?

How to choose the correct blasting nozzle size?

How to choose the correct sandblasting nozzle size?
How much air do you need for different size nozzles to maintain the needed pressure? 

Every sandblaster operator knows - in order to work effectively and get the job done, you need to use the right sized nozzle. We want to clarify a little bit further - in order to sandblast the surface effectively you need to maintain at least around 6,5 - 7 bar pressure. To achieve and maintain this level of pressure you need to select the blast nozzle's size according to available compressed air capacity (m3/min).

Double venturi sandblasting nozzles

Air and abrasive consumption in terms of compressed air pressure and sandblasting nozzle size

 

    7 bar 8,5 bar
Nozzle diameter Air consumption (m3/min) 0,6 0,75
3,2 mm Abrasive consumption (kg/h) 54 61
Nozzle diameter Air consumption (m3/min) 1,3 1,7
4,8 mm Abrasive consumption (kg/h) 118 145
Nozzle diameter Air consumption (m3/min) 2,3 2,7
6,35 mm Abrasive consumption (kg/h) 227 306
Nozzle diameter Air consumption (m3/min) 4 5,4
8 mm Abrasive consumption (kg/h) 374 454
Nozzle diameter Air consumption (m3/min) 5,7 7,8
9,5 mm Abrasive consumption (kg/h) 499 612
Nozzle diameter Air consumption (m3/min) 7,3 8,9
11 mm Abrasive consumption (kg/h) 703 816
Nozzle diameter Air consumption (m3/min) 9,7 8,9
12,5 mm Abrasive consumption (kg/h) 919 1145
Nozzle diameter Air consumption (m3/min) 15,6 19,8
16 mm Abrasive consumption (kg/h) 1497 1814
Nozzle diameter Air consumption (m3/min) 22,7 31,2
19 mm Abrasive consumption (kg/h) 2132 2586