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Application
Engineering Basics
Friction
Loss per Foot of Tubing
Friction Loss in Fittings
To calculate friction loss in
fittings use chart below. This chart will yield equivalent lengths
(in feet) of tubing. Use this length with graph above to find friction
loss in inches of water column.
| NOMINAL PIPE SIZE (INCHES) |
EQUIVALENT TUBING LENGTH (FEET) |
| 90º EL |
45º EL |
| 1 1/4 |
3 |
1.5 |
| 1 1/2 |
4 |
2 |
| 2 |
5 |
2.5 |
| 2 1/2 |
6 |
3 |
| 3 |
7 |
4 |
| 4 |
10 |
5 |
| 5 |
12 |
6 |
| 6 |
15 |
7.5 |
| 8 |
20 |
10 |
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