Hose and Hose Assemblies. JGB's Hose, Fitting, and Valves CatalogJGB Enterprises Inc. celebrates its 35 years. The owner, Jay G Bernhardt, founded the company in 1977 and  we have grown the company into a leading defense contractor and commercial supplier in hoses and fittings
Request a Quote
Search Website 

Maximum Recommended Air Flow (SCFM)
Through ANSI Standard Weight Schedule 40 Metal Pipe

The flow values in the table below are based on a pressure drop of 10% of the applied pressure per 100 feet of pipe for 1/8", 1/4", 3/8", and 1/2" pipe sizes; and a pressure drop of 5% of the applied pressure per 100 feet of pipe for 3/4", 1", 1-1/4", 2", 2-1/2", 3" pipe sizes.

The table gives recommended flows for pipe sizes at listed pressures and should be used to determine appropriate piping for air systems.

 Applied Pressure PSINominal Standard Pipe Size
 1/8"1/4" 3/8"1/2"3/4"1" 1-1/4"1-1/2"2"2-1/2"3"
50.51.22.74.96.613274080135 240
100.81.73.97.711.0214464125200370
201.33.06.613.018.53575110215350600
402.55.512.023.034.0621352003856401100
603.5 8.018.034.050.093195290560 900 1600
 804.710.5   23.044.065.0120255380720 12002100
1005.813.029.054.080.0150 31547090014502600
1508.620.041.0 80.0115.0220460680135022003900
20011.526.058.0108.0155.0290620910175028005000
25014.533.073.0135.0200.03707701150220035006100