Formula
Capacity scaled inversely with length (≈ 1 PSI drop)Recommended
1.25″
Schedule 40 steel / Type L copper / equivalent.
100%
| Size | Max cfm |
|---|---|
| 0.5″ | 22 |
| 0.75″ | 46 |
| 1″ | 95 |
| 1.25″ | 175 |
| 1.5″ | 285 |
| 2″ | 570 |
| 2.5″ | 900 |
| 3″ | 1600 |
| 4″ | 3300 |
Pipe Sizing
Capacity scaled inversely with length (≈ 1 PSI drop)| Size | Max cfm |
|---|---|
| 0.5″ | 22 |
| 0.75″ | 46 |
| 1″ | 95 |
| 1.25″ | 175 |
| 1.5″ | 285 |
| 2″ | 570 |
| 2.5″ | 900 |
| 3″ | 1600 |
| 4″ | 3300 |