Minimum Compressor Air Line Diameter
| Nozzle No. | Nozzle Orifice Size | Minimum Air Line ID |
| No. 3 | 3/16″ (5.0mm) | 1″ (25.0mm) |
| No. 4 | 1/4″ (6.5mm) | 1″ (25.0mm) |
| No. 5 | 5/16″ (8.0mm) | 1-1/4″ (32.0mm) |
| No. 6 | 3/8″ (9.5mm) | 1-1/2″ (38.0mm) |
| No. 7 | 7/16″ (11.0mm) | 2″ (50.0mm) |
| No. 8 | 1/2″ (12.5mm) | 2″ (50.0mm) |
| No. 10 | 5/8″ (16.0mm) | 2-1/2″ (64.0mm) |
| No. 12 | 3/4″ (19.0) | 3″ (76.0mm) |