Air Line Pipe Size
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| Length of Run | - Feet | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Flow | 25 | 50 | 75 | 100 | 150 | 200 | 300 | 500 | 1000 |
| 6 | 1/2 | 1/2 | 1/2 | 1/2 | 1/2 | 1/2 | 1/2 | 3/4 | 3/4 |
| 18 | 1/2 | 1/2 | 1/2 | 3/4 | 3/4 | 3/4 | 3/4 | 1 | 1 |
| 30 | 3/4 | 3/4 | 3/4 | 3/4 | 1 | 1 | 1 | 1-1/4 | 1-1/4 |
| 45 | 3/4 | 3/4 | 1 | 1 | 1 | 1 | 1-1/4 | 1-1/4 | 1-1/4 |
| 60 | 3/4 | 1 | 1 | 1 | 1-1/4 | 1-1/4 | 1-1/4 | 1-1/2 | 1-1/2 |
| 90 | 1 | 1 | 1-1/4 | 1-1/4 | 1-1/4 | 1-1/4 | 1-1/2 | 1-1/2 | 2 |
| 120 | 1 | 1-1/4 | 1-1/4 | 1-1/4 | 1-1/2 | 1-1/2 | 1-1/2 | 2 | 2 |
| 150 | 1-1/4 | 1-1/4 | 1-1/4 | 1-1/2 | 1-1/2 | 2 | 2 | 2 | 2-1/2 |
| 180 | 1-1/4 | 1-1/2 | 1-1/2 | 1-1/2 | 2 | 2 | 2 | 2-1/2 | 2-1/2 |
| 240 | 1-1/4 | 1-1/2 | 1-1/2 | 2 | 2 | 2 | 2-1/2 | 2-1/2 | 3 |
| 300 | 1-1/2 | 2 | 2 | 2 | 2 | 2-1/2 | 2-1/2 | 3 | 3 |
| 360 | 1-1/2 | 2 | 2 | 2 | 2-1/2 | 2-1/2 | 2-1/2 | 3 | 3 |
| 450 | 2 | 2 | 2 | 2-1/2 | 2-1/2 | 3 | 3 | 3 | 3-1/2 |
| 600 | 2 | 2-1/2 | 2-1/2 | 2-1/2 | 3 | 3 | 3 | 3-1/2 | 4 |
| 750 | 2 | 2-1/2 | 2-1/2 | 3 | 3 | 3 | 3-1/2 | 3-1/2 | 4 |