Pressure Loss in Compressed Air Pipe Lines
Pressure drop in compressed air pipe lines
Sponsored Links
Pressure drop in compressed air pipe lines depends on the line pressure, the air flow and the size of pipe. Pressure loss in schedule 40 steel pipes with compressed air ranging 50 to 125 psig can be estimated from the table below.
| NPS (in) |
Air Flow1) (SCFM) |
Pressure Loss per 100 ft pipe (psi) | |||
| Line Pressure (psig) | |||||
| 50 | 75 | 100 | 125 | ||
| 1/2 | 10 | 0.7 | 0.5 | 0.4 | 0.3 |
| 20 | 2.7 | 2.0 | 1.6 | 1.3 | |
| 30 | 5.9 | 4.3 | 3.4 | 2.8 | |
| 40 | 7.5 | 5.8 | 4.8 | ||
| 50 | 9.0 | 7.4 | |||
| 60 | 12.9 | 10.6 | |||
| 3/4 | 10 | 0.2 | 0.15 | ||
| 20 | 0.9 | 0.5 | 0.4 | 0.3 | |
| 50 | 3.8 | 2.7 | 2.1 | 1.8 | |
| 80 | 6.8 | 5.2 | 4.4 | ||
| 100 | 10.6 | 8.3 | 7.0 | ||
| 125 | 12.9 | 10.7 | |||
| 150 | 13.9 | ||||
| 1 | 20 | 0.2 | 0.1 | 0.1 | |
| 50 | 1.1 | 0.8 | 0.6 | 0.5 | |
| 75 | 2.6 | 1.7 | 1.3 | 1.1 | |
| 100 | 4.1 | 3.0 | 2.3 | 1.9 | |
| 125 | 6.3 | 4.5 | 3.5 | 2.9 | |
| 150 | 6.5 | 5.1 | 4.2 | ||
| 200 | 8.9 | 7.3 | |||
| 250 | 11.3 | ||||
| 1 1/2 | 50 | 0.1 | |||
| 75 | 0.3 | 0.2 | 0.15 | 0.1 | |
| 100 | 0.5 | 0.3 | 0.3 | 0.2 | |
| 125 | 0.7 | 0.5 | 0.4 | 0.3 | |
| 150 | 1.0 | 0.8 | 0.6 | 0.5 | |
| 200 | 1.8 | 1.3 | 1.0 | 0.8 | |
| 250 | 2.8 | 2.0 | 1.6 | 1.3 | |
| 300 | 4.0 | 2.9 | 2.3 | 1.9 | |
| 400 | 7.0 | 5.0 | 4.0 | 3.2 | |
| 500 | 7.8 | 6.2 | 5.1 | ||
| 600 | 8.8 | 7.2 | |||
| 700 | 11.9 | 9.8 | |||
| 800 | 12.8 | ||||
| 2 | 100 | 0.1 | |||
| 150 | 0.3 | 0.2 | 0.2 | 0.1 | |
| 200 | 0.5 | 0.4 | 0.3 | 0.2 | |
| 250 | 0.8 | 0.6 | 0.4 | 0.4 | |
| 300 | 1.1 | 0.8 | 0.6 | 0.5 | |
| 400 | 1.9 | 1.4 | 1.1 | 0.9 | |
| 500 | 2.9 | 2.1 | 1.7 | 1.4 | |
| 600 | 4.2 | 3.0 | 2.4 | 2.0 | |
| 800 | 5.4 | 4.2 | 3.4 | ||
| 1000 | 8.3 | 6.5 | 5.3 | ||
| 1250 | 10.0 | 8.3 | |||
| 1500 | 11.9 | ||||
| 2 1/2 | 150 | 0.1 | |||
| 200 | 0.2 | 0.15 | 0.1 | ||
| 250 | 0.3 | 0.2 | 0.2 | 0.1 | |
| 300 | 0.5 | 0.3 | 0.3 | 0.2 | |
| 400 | 0.8 | 0.6 | 0.5 | 0.4 | |
| 500 | 1.2 | 0.9 | 0.4 | 0.6 | |
| 600 | 1.7 | 1.3 | 1.0 | 0.8 | |
| 800 | 3.0 | 2.2 | 1.7 | 1.4 | |
| 1000 | 4.7 | 3.4 | 2.7 | 1.9 | |
| 1250 | 7.5 | 5.4 | 4.2 | 3.5 | |
| 1500 | 7.5 | 5.9 | 4.8 | ||
| 2000 | 10.3 | 8.5 | |||
| 2500 | 13.3 | ||||
| 3 | 300 | 0.1 | 0.1 | ||
| 500 | 0.4 | 0.3 | 0.2 | 0.2 | |
| 750 | 0.8 | 0.6 | 0.5 | 0.4 | |
| 1000 | 1.5 | 1.1 | 0.8 | 0.7 | |
| 1500 | 3.3 | 2.4 | 1.9 | 1.5 | |
| 2000 | 5.9 | 4.2 | 3.3 | 2.7 | |
| 2500 | 5.6 | 5.1 | 4.2 | ||
| 3000 | 9.4 | 7.4 | 5.1 | ||
| 3500 | 10.1 | 8.3 | |||
| 4000 | 13.1 | 10.8 | |||
| 4500 | 13.6 | ||||
| 4 | 750 | 0.2 | 0.15 | 0.1 | |
| 1000 | 0.4 | 0.3 | 0.2 | 0.2 | |
| 1500 | 0.8 | 0.6 | 0.5 | 0.4 | |
| 2000 | 1.5 | 1.1 | 0.8 | 0.7 | |
| 2500 | 2.2 | 1.6 | 1.3 | 1.1 | |
| 3000 | 3.2 | 2.3 | 1.8 | 1.5 | |
| 4000 | 5.7 | 3.4 | 3.2 | 2.6 | |
| 5000 | 6.3 | 5.0 | 4.1 | ||
| 6000 | 9.0 | 7.1 | 6.8 | ||
| 7000 | 9.7 | 7.9 | |||
| 8000 | 12.7 | 10.3 | |||
1) Free Air Inflow Volume Flow at Standard Conditions
Sponsored Links
Sponsored Links
SketchUp Engineering ToolBox - Online 3D modeling!
Free SketchUp Engineering ToolBox - enabled for use with the amazing, fun and free Google SketchUp.
Search the ToolBox
© The Engineering ToolBox 2005
8 6 27
