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Copper Pipe Flow Friction Loss Size 0.5 to 1.00 inch diameter

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Friction Losses to Water Flow in Copper Pipes Size 0.5 to 1.00 inch diameter

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Tables are for Copper pipe with a surface roughness of C=130.

Nominal Size, in.
0.5
Type K Tubing
Type L Tubing
Type M Tubing
Dia. 0.527 in.
Velocity, fps
Head Loss
ft/100 ft
Dia. 0.545 in.
Velocity, fps
Head Loss
ft/100 ft
Dia. 0.569 in.
Velocity, fps
Head Loss
ft/100 ft
gpm
0.5
0.74
0.80
0.69
0.68
0.63
0.55
1
1.47
2.89
1.38
2.46
1.26
1.99
1.5
2.21
6.1
2.06
5.2
1.89
4.22
2
2.94
10.4
2.75
8.9
2.52
7.2
2.5
3.68
15.8
3.44
13.4
3.15
10.9
3
4.41
22.1
4.13
18.8
3.79
15.2
3.5
5.15
29.4
4.81
24.9
4.42
20.2
4
5.88
37.6
5.50
31.9
5.05
25.9

 

Nominal Size, in.
0.75
Type K Tubing
Type L Tubing
Type M Tubing
Dia. 0.745 in.
Velocity, fps
Head Loss
ft/100 ft
Dia. 0.785 in.
Velocity, fps
Head Loss
ft/100 ft
Dia. 0.811 in.
Velocity, fps
Head Loss
ft/100 ft
gpm
1
0.74
0.54
0.66
0.42
0.62
0.36
2
1.47
1.94
1.33
1.50
1.24
1.28
3
2.21
4.1
1.99
3.2
1.86
2.71
4
2.94
7.0
2.65
5.4
2.48
4.6
5
3.68
10.5
3.31
8.2
3.11
7.0
6
4.42
14.8
3.98
11.5
3.73
9.8
7
5.15
19.6
4.64
15.2
4.35
13.0
8
5.89
25.2
5.30
19.5
4.97
16.6

 

Nominal Size, in.
1
Type K Tubing
Type L Tubing
Type M Tubing
Dia. 0.995 in.
Velocity, fps
Head Loss
ft/100 ft
Dia. 1.025 in.
Velocity, fps
Head Loss
ft/100 ft
Dia. 1.055 in.
Velocity, fps
Head Loss
ft/100 ft
gpm
2
0.83
0.47
0.78
0.41
0.73
0.36
3
1.24
1.00
1.17
0.87
1.10
0.75
4
1.65
1.71
1.56
1.48
1.47
1.28
5
2.06
2.58
1.94
2.23
1.84
1.94
6
2.48
3.6
2.33
3.1
2.20
2.72
7
2.89
4.8
2.72
4.2
2.57
3.6
8
3.30
6.2
3.11
5.3
2.94
4.6
10
4.13
9.3
3.89
8.0
3.67
7.0
11
4.54
11.1
4.28
9.6
4.04
8.3
12
4.95
13.0
4.67
11.3
4.40
9.8
13
5.36
15.1
5.05
13.1
4.77
11.4
14
5.78
17.3
5.44
15.0
5.14
13.0

Related

Source

American Gas Association and the National Fire Protection Association. Used by permission

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