Resources, Tools and Basic Information for Engineering and Design of Technical Applications!
mobile - visible on handheld devices - alternatively go to www.engineeringtoolbox.com!
Engineering ToolBox > Friction Loss Viscous Liquids
The table below can be used to indicate the friction loss - feet of liquid per 100 feet of pipe - in standard schedule 40 steel pipes.
| Pipe Size (inches) | Flow Rate | Kinematic Viscosity - SSU | ||||||
| (gpm) | (l/s) | 31 (Water) | 100 (~Cream) | 200 (~Vegetable oil) | 400 (~SAE 10 oil) | 800 (~Tomato juice) | 1500 (~SAE 30 oil) | |
| 1/2 | 3 | 0.19 | 10.0 | 25.7 | 54.4 | 108.0 | 218.0 | 411.0 |
| 3/4 | 3 | 0.19 | 2.5 | 8.5 | 17.5 | 35.5 | 71.0 | 131.0 |
| 5 | 0.32 | 6.3 | 14.1 | 29.3 | 59.0 | 117.0 | 219.0 | |
| 1 | 3 | 0.19 | 0.8 | 3.2 | 6.6 | 13.4 | 26.6 | 50.0 |
| 5 | 0.32 | 1.9 | 5.3 | 11.0 | 22.4 | 44.0 | 83.0 | |
| 10 | 0.63 | 6.9 | 11.2 | 22.4 | 45.0 | 89.0 | 165.0 | |
| 15 | 0.95 | 14.6 | 26.0 | 34.0 | 67.0 | 137.0 | ||
| 20 | 1.26 | 25.1 | 46 | 46.0 | 90.0 | 180.0 | ||
| 1 1/4 | 5 | 0.32 | 0.5 | 1.8 | 3.7 | 7.6 | 14.8 | 26.0 |
| 10 | 0.63 | 1.8 | 3.6 | 7.5 | 14.9 | 30.0 | 55.0 | |
| 15 | 0.95 | 3.7 | 6.4 | 11.3 | 22.4 | 45.0 | 84.0 | |
| 1 1/2 | 10 | 0.63 | 0.8 | 1.9 | 4.2 | 8.1 | 16.5 | 31.0 |
| 15 | 0.95 | 1.7 | 2.8 | 6.2 | 12.4 | 25.0 | 46.0 | |
| 20 | 1.26 | 2.9 | 5.3 | 8.1 | 16.2 | 33.0 | 61.0 | |
| 30 | 1.9 | 6.3 | 11.6 | 12.2 | 24.3 | 50.0 | 91.0 | |
| 40 | 2.5 | 10.8 | 19.6 | 20.8 | 32.0 | 65.0 | 121.0 | |
| 2 | 20 | 1.26 | 0.9 | 1.5 | 3.0 | 6.0 | 11.9 | 22.4 |
| 30 | 1.9 | 1.8 | 3.2 | 4.4 | 9.0 | 17.8 | 33.0 | |
| 40 | 2.5 | 3.1 | 5.8 | 5.8 | 11.8 | 24.0 | 44.0 | |
| 60 | 3.8 | 6.6 | 11.6 | 13.4 | 17.8 | 36.0 | 67.0 | |
| 80 | 5.0 | 1.6 | 3.0 | 3.2 | 4.8 | 9.7 | 18.3 | |
| 2 1/2 | 30 | 1.9 | 0.8 | 1.4 | 2.2 | 4.4 | 8.8 | 16.6 |
| 40 | 2.5 | 1.3 | 2.5 | 3.0 | 5.8 | 11.8 | 22.2 | |
| 60 | 3.8 | 2.7 | 5.1 | 5.5 | 8.8 | 17.8 | 34.0 | |
| 80 | 5.0 | 4.7 | 8.3 | 9.7 | 11.8 | 24.0 | 44.0 | |
| 100 | 6.3 | 7.1 | 12.2 | 14.1 | 14.8 | 29.0 | 55.0 | |
| 3 | 60 | 3.8 | 0.9 | 1.8 | 1.8 | 3.7 | 7.3 | 13.8 |
| 100 | 6.3 | 2.4 | 4.4 | 5.1 | 6.2 | 12.1 | 23.0 | |
| 125 | 7.9 | 3.6 | 6.5 | 7.8 | 8.1 | 15.3 | 29.0 | |
| 150 | 9.5 | 5.1 | 9.2 | 10.4 | 11.5 | 18.4 | 35.0 | |
| 175 | 11.0 | 6.9 | 11.7 | 13.8 | 15.8 | 21.4 | 40.0 | |
| 200 | 12.6 | 8.9 | 15.0 | 17.8 | 20.3 | 25.0 | 46.0 | |
| 4 | 80 | 5.0 | 0.4 | 0.8 | 0.8 | 1.7 | 3.3 | 6.2 |
| 100 | 6.3 | 0.6 | 1.2 | 1.3 | 2.1 | 4.1 | 7.8 | |
| 125 | 7.9 | 0.9 | 1.8 | 2.1 | 2.6 | 5.2 | 9.8 | |
| 150 | 9.5 | 1.3 | 2.4 | 2.9 | 3.1 | 6.2 | 11.5 | |
| 175 | 11.0 | 1.8 | 3.2 | 4.0 | 4.0 | 7.4 | 13.7 | |
| 200 | 12.6 | 2.3 | 4.2 | 5.1 | 5.1 | 8.3 | 15.5 | |
| 250 | 15.8 | 3.5 | 6.0 | 7.4 | 8.0 | 10.2 | 19.4 | |
| 6 | 125 | 7.9 | 0.1 | 0.3 | 0.3 | 0.52 | 1.0 | 1.9 |
| 150 | 9.5 | 0.2 | 0.3 | 0.4 | 0.6 | 1.2 | 2.3 | |
| 175 | 11.0 | 0.2 | 0.4 | 0.5 | 0.7 | 1.4 | 2.6 | |
| 200 | 12.6 | 0.3 | 0.6 | 0.7 | 0.8 | 1.6 | 3.0 | |
| 250 | 15.8 | 0.5 | 0.8 | 1.0 | 1.0 | 2.1 | 3.7 | |
| 300 | 18.9 | 1.1 | 8.5 | 10.0 | 11.6 | 12.4 | 23.0 | |
| 400 | 25.2 | 1.1 | 1.9 | 2.3 | 2.8 | 3.2 | 6.0 | |
| 8 | 250 | 15.8 | 0.1 | 0.2 | 0.3 | 0.4 | 0.7 | 1.2 |
| 300 | 18.9 | 0.3 | 1.2 | 1.4 | 1.5 | 2.5 | 4.6 | |
| 400 | 25.2 | 0.3 | 0.5 | 0.6 | 0.7 | 1.1 | 2.0 | |
| 10 | 300 | 18.9 | 0.1 | 0.3 | 0.4 | 0.4 | 0.8 | 1.5 |
| 400 | 25.2 | 0.1 | 0.2 | 0.2 | 0.2 | 0.4 | 0.8 | |