Recommended sizes, flows, and velocities for copper tubing
Courtesy of Taco, Inc.
Nominal tubing size (inches) |
Minimum flow |
Maximum flow |
||
gal/min |
ft/s |
gal/min |
ft/s |
|
0.5 |
- |
- |
1.5 |
2.1 |
0.75 |
1.5 |
1.0 |
3.5 |
2.3 |
1 |
3.5 |
1.4 |
7.5 |
3.0 |
1.25 |
7 |
1.9 |
13 |
3.5 |
1.5 |
12 |
2.1 |
20 |
3.6 |
2 |
20 |
2.1 |
40 |
4.1 |
2.5 |
40 |
2.7 |
75 |
5.1 |
3 |
65 |
3.0 |
110 |
5.2 |
3.5 |
90 |
3.1 |
150 |
5.2 |
4 |
130 |
3.5 |
210 |
5.6 |