1/8″ Pipe | Actual ID = .270

The table below shows the airflow pressure drop in Pounds per Square Inch per 100 feet of schedule 40 pipe.

FOR EXAMPLE, if Bob has a line pressure of 80 PSIG with an airflow of 6 SCFM moving through the 100 feet of pipe, he would experience a drop in pressure of approximately 12.85 Pounds per Square Inch.

Line Pressure
(PSIG)
Free Air (SCFM)
2 4 6 8
40 2.75 10.10 22.20 39.00
60 2.00 7.40 16.25 28.55
80 1.60 5.85 12.85 22.55
100 0.35 4.85 10.60 18.60