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Compressed Air through Schedule 40 Pipe - 1/2" Pipe
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| 1/2" Schedule 40 Pipe---.622 actual I.D. |
| SCFM Free Air | Line Pressure - PSIG |
| 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 |
| 3 | 0.088 | 0.074 | 0.064 | 0.057 | 0.051 | 0.046 | 0.042 | 0.039 |
| 4 | 0.149 | 0.126 | 0.109 | 0.096 | 0.086 | 0.078 | 0.071 | 0.065 |
| 5 | 0.222 | 0.188 | 0.163 | 0.144 | 0.128 | 0.116 | 0.106 | 0.098 |
| 6 | 0.31 | 0.262 | 0.227 | 0.2 | 0.179 | 0.162 | 0.148 | 0.136 |
| 8 | 0.535 | 0.452 | 0.391 | 0.345 | 0.309 | 0.279 | 0.255 | 0.235 |
| 10 | 0.746 | 0.631 | 0.546 | 0.482 | 0.431 | 0.39 | 0.356 | 0.328 |
| 15 | 1.749 | 1.479 | 1.28 | 1.129 | 1.01 | 0.914 | 0.834 | 0.767 |
| 20 | 2.999 | 2.535 | 2.195 | 1.936 | 1.732 | 1.567 | 1.43 | 1.316 |
| 25 | 4.634 | 3.918 | 3.392 | 2.993 | 2.677 | 2.421 | 2.21 | 2.033 |
| 30 | 6.605 | 5.585 | 4.835 | 4.266 | 3.815 | 3.451 | 3.15 | 2.898 |
| 35 | 8.912 | 7.535 | 6.524 | 5.755 | 5.148 | 4.656 | 4.25 | 3.91 |
| 40 | 11.512 | 9.734 | 8.427 | 7.435 | 6.649 | 6.014 | 5.49 | 5.051 |
| 45 | 14.469 | 12.234 | 10.592 | 9.344 | 8.357 | 7.559 | 6.9 | 6.348 |
| 50 | 17.803 | 15.053 | 13.032 | 11.497 | 10.283 | 9.301 | 8.49 | 7.811 |
| 60 | 25.582 | 21.631 | 18.727 | 16.521 | 14.777 | 13.365 | 12.2 | 11.224 |
| 70 | 34.599 | 29.255 | 25.328 | 22.344 | 19.985 | 18.076 | 16.5 | 15.18 |
| 80 | 44.873 | 37.942 | 32.849 | 28.98 | 25.92 | 23.444 | 21.4 | 19.688 |
| 90 | 56.616 | 47.871 | 41.445 | 36.563 | 32.702 | 29.579 | 27 | 24.84 |