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Air Flow Through 10-Foot Long Tubes

For flows at lower pressure, consult more complete references. The below are representative flows for estimating purposes. Wall thicknesses are: 1/8" tube, 0.21" wall; 1/4" tube, .035" wall.

*Values are for discharge to standard atmospheric pressure.

Flow
*Pressure Drop 1/8" OD Tube 1/4" OD Tube
psig kPa scfm l/m  scfm l/m
10 69 0.5 14.2 3.0 85.0
20 138 0.8 21.2 4.8 136.0
30 207 1.1 29.7 6.6 187.0
40 276 1.3 37.4 8.5 241.0
50 345 1.6 45.3 10.4 295.0
60 414 1.9 53.0 12.2 346.0
70 483 2.2 60.9 14.2 402.0
80 552 2.4 68.7 16.0 453.0
90 621 2.7 77.2 18.0 510.0
100 690 3.0 85.0 19.8 561.0