Compressed Air Pipes - Fittings and Pressure Loss
Fittings in compressed air pipe lines and equivalent length pressure drop.
Pressure drop in compressed air pipe line fittings can be expressed as equivalent length in meters of pipe line.
Fitting | Equivalent Pipe Length (m) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Nominal Pipe Size (mm) | ||||||||||
| 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | |
| 90o bend | 0.15 | 0.2 | 0.25 | 0.35 | 0.5 | 0.6 | 0.8 | 1.0 | 1.2 | 1.5 |
| 90o elbow | 0.25 | 0.4 | 0.5 | 0.65 | 0.8 | 1.0 | 1.4 | 1.8 | 2.4 | 3.2 |
| Tee - run | 0.2 | 0.3 | 0.4 | 0.5 | 0.7 | 0.85 | 1.1 | 1.3 | 1.6 | 2.0 |
| Tee - side outlet | 0.5 | 0.7 | 1.4 | 1.8 | 2.4 | 2.7 | 3.6 | 4.6 | 5.7 | 7.0 |
Example - Compressed Air Pipe Line and Equivalent Length
A 90o bend equals to a 0.6 m50 mm pipe line.
Fitting | Equivalent Pipe Length (ft) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Nominal Pipe Size (inches) | ||||||||||
| 1/2" | 3/4" | 1" | 1 1/4" | 1 1/2" | 2" | 2 1/2" | 3" | 4" | 5" | |
| 90o bend | 0.5 | 0.7 | 0.8 | 1.2 | 1.7 | 2 | 2.6 | 3.3 | 4 | 5 |
| 90o elbow | 0.8 | 1.3 | 1.7 | 2.1 | 2.6 | 3.3 | 4.6 | 5.9 | 7.9 | 10.6 |
| Tee - run | 0.7 | 1 | 1.3 | 1.7 | 2.3 | 2.8 | 4.4 | 4.3 | 5.3 | 6.6 |
| Tee - side outlet | 1.7 | 2.3 | 4.6 | 5.9 | 7.9 | 8.9 | 11.9 | 15.1 | 18.8 | 23.1 |
