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Uponor PEX friction loss tables
⅜" Uponor AquaPEX (100% water)
psi loss per 100 feet of tubing
Velocity
(ft/s)
gpm
40°F
4°C
60°F
16°C
80°F
27°C
100°F
38°C
120°F
49°C
140°F
60°C
160°F
71°C
180°F
82°C
1.5 0.45 2.54 2.14 1.98 1.85 1.74 1.66 1.58 1.52
1.6 0.48 2.83 2.39 2.21 2.07 1.95 1.85 1.77 1.70
1.7 0.51 3.14 2.65 2.45 2.29 2.17 2.06 1.97 1.89
1.8 0.54 3.45 2.92 2.70 2.53 2.39 2.27 2.17 2.09
1.9 0.57 3.78 3.21 2.97 2.78 2.63 2.50 2.39 2.29
2.0 0.60 4.13 3.50 3.24 3.04 2.87 2.73 2.61 2.51
2.1 0.63 4.48 3.81 3.53 3.31 3.13 2.98 2.85 2.73
2.2 0.66 4.85 4.12 3.82 3.59 3.39 3.23 3.09 2.97
2.3 0.69 5.23 4.45 4.13 3.87 3.66 3.49 3.34 3.21
2.4 0.72 5.62 4.79 4.44 4.17 3.95 3.76 3.60 3.46
2.5 0.75 6.03 5.14 4.77 4.48 4.24 4.04 3.87 3.72
2.6 0.78 6.44 5.50 5.11 4.79 4.54 4.33 4.14 3.98
2.7 0.81 6.87 5.87 5.45 5.12 4.85 4.62 4.43 4.26
2.8 0.84 7.31 6.25 5.81 5.46 5.17 4.93 4.72 4.54
2.9 0.87 7.76 6.64 6.17 5.80 5.50 5.24 5.02 4.83
3.0 0.90 8.22 7.04 6.55 6.15 5.83 5.57 5.33 5.13
3.1 0.93 8.70 7.45 6.93 6.52 6.18 5.90 5.65 5.44
3.2 0.96 9.18 7.87 7.33 6.89 6.53 6.24 5.98 5.75
3.3 0.99 9.68 8.30 7.73 7.27 6.90 6.58 6.31 6.08
3.4 1.02 10.19 8.75 8.14 7.66 7.27 6.94 6.65 6.41
3.5 1.05 10.71 9.20 8.56 8.06 7.65 7.30 7.00 6.74
3.6 1.08 11.24 9.66 9.00 8.47 8.04 7.68 7.36 7.09
3.7 1.11 11.78 10.13 9.44 8.89 8.43 8.06 7.73 7.44
3.8 1.14 12.33 10.61 9.89 9.31 8.84 8.45 8.10 7.80
3.9 1.17 12.89 11.10 10.35 9.75 9.25 8.84 8.49 8.17
4.0 1.20 13.47 11.60 10.81 10.19 9.68 9.25 8.88 8.55
4.1 1.23 14.05 12.11 11.29 10.64 10.11 9.66 9.27 8.93
4.2 1.26 14.65 12.63 11.78 11.10 10.55 10.08 9.68 9.33
4.3 1.29 15.25 13.16 12.27 11.57 10.99 10.51 10.09 9.73
4.4 1.32 15.87 13.69 12.78 12.05 11.45 10.95 10.51 10.13
4.5 1.35 16.50 14.24 13.29 12.54 11.91 11.39 10.94 10.55
4.6 1.38 17.13 14.80 13.81 13.03 12.39 11.85 11.38 10.97
4.7 1.41 17.78 15.36 14.35 13.53 12.87 12.31 11.82 11.40
4.8 1.44 18.44 15.94 14.89 14.05 13.36 12.78 12.28 11.84
4.9 1.47 19.11 16.52 15.43 14.57 13.85 13.25 12.73 12.28
5.0 1.50 19.79 17.12 15.99 15.10 14.36 13.74 13.20 12.73
5.1 1.53 20.48 17.72 16.56 15.63 14.87 14.23 13.68 13.19
5.2 1.56 21.18 18.33 17.13 16.18 15.39 14.73
14.16 13.66
5.3 1.59 21.89 18.95 17.72 16.73 15.92 15.24 14.65 14.13
5.4 1.62 22.61 19.58 18.31 17.29 16.46 15.75 15.15 14.61
5.5 1.65 23.34 20.22 18.91 17.86 17.00 16.28 15.65 15.10
5.6 1.68 24.08 20.87 19.52 18.44 17.55 16.81 16.16 15.60
5.7 1.71 24.83 21.53 20.14 19.03 18.11 17.35 16.68 16.10
5.8 1.74 25.59 22.20 20.77 19.62 18.68 17.89 17.21 16.61
5.9 1.77 26.36 22.87 21.40 20.23 19.26 18.45 17.74 17.13
6.0 1.80 27.13 23.56 22.04 20.84 19.84 19.01 18.28 17.65
6.1 1.83 27.92 24.25 22.70 21.46 20.44 19.58 18.83 18.18
6.2 1.86 28.72 24.95 23.36 22.09 21.04 20.16 19.39 18.72
6.3 1.89 29.53 25.66 24.03 22.72 21.64 20.74 19.95 19.27
6.4 1.92 30.35 26.38 24.70 23.36 22.26 21.33 20.53 19.82
6.5 1.95 31.18 27.11 25.39 24.02 22.88 21.93 21.10 20.38
6.6 1.98 32.02 27.85 26.08 24.68 23.51 22.54 21.69 20.95
6.7 2.01 32.87 28.59 26.79 25.34 24.15 23.15 22.28 21.52
⅜" Uponor AquaPEX (100% water)
psi loss per 100 feet of tubing
Velocity
(ft/s)
gpm
40°F
4°C
60°F
16°C
80°F
27°C
100°F
38°C
120°F
49°C
140°F
60°C
160°F
71°C
180°F
82°C
6.8 2.04 33.73 29.35 27.50 26.02 24.80 23.77 22.88 22.10
6.9 2.07 34.59 30.11 28.22 26.70 25.45 24.40 23.49 22.69
7.0 2.10 35.47 30.88 28.94 27.39 26.11 25.04 24.10 23.29
7.1 2.13 36.36 31.66 29.68 28.09 26.78 25.68 24.73 23.89
7.2 2.16 37.25 32.45 30.42 28.80 27.46 26.33 25.36 24.50
7.3 2.19 38.16 33.25 31.17 29.51 28.14 26.99 25.99 25.12
7.4 2.22 39.08 34.06 31.94 30.24 28.84 27.66 26.64 25.74
7.5 2.25 40.00 34.87 32.70 30.97 29.54 28.33 27.29 26.37
7.6 2.28 40.93 35.70 33.48 31.71 30.24 29.01 27.94 27.01
7.7 2.31 41.88 36.53 34.26 32.45 30.96 29.70 28.61 27.65
7.8 2.34 42.83 37.37 35.06 33.21 31.68 30.40 29.28 28.30
7.9 2.37 43.79 38.22 35.86 33.97 32.41 31.10 29.96 28.96
8.0 2.40 44.77 39.08 36.67 34.74 33.15 31.81 30.65 29.63
8.1 2.43 45.75 39.94 37.48 35.52 33.89 32.53 31.34 30.30
8.2 2.46 46.74 40.82 38.31 36.30 34.64 33.25 32.04 30.98
8.3 2.49 47.74 41.70 39.14 37.09 35.40 33.98 32.75 31.66
8.4 2.52 48.75 42.59 39.98 37.90 36.17 34.72 33.46 32.36
8.5 2.55 49.77 43.49 40.83 38.70 36.94 35.47 34.18 33.06
8.6 2.58 50.79 44.40 41.69 39.52 37.73 36.22 34.91 33.76
8.7 2.61 51.83 45.32 42.55 40.34 38.52 36.98 35.65 34.48
8.8 2.64 52.88 46.24 43.43 41.17 39.31 37.75 36.39 35.20
8.9 2.67 53.93 47.17 44.31 42.01 40.12 38.53 37.14 35.92
9.0 2.70 55.00 48.11 45.20 42.86 40.93 39.31 37.90 36.66
9.1 2.73 56.07 49.06 46.09 43.71 41.75 40.10 38.66 37.40
9.2 2.76 57.15 50.02 47.00 44.58 42.57 40.89 39.43 38.14
9.3 2.79 58.24 50.99 47.91 45.45 43.41 41.70 40.21 38.90
9.4 2.82 59.34 51.96 48.83 46.32 44.25 42.51 40.99 39.66
9.5 2.85 60.45 52.94 49.76 47.21 45.10 43.33 41.78 40.43
9.6 2.88 61.57 53.94 50.69 48.10 45.95 44.15 42.58 41.20
9.7 2.91 62.70 54.93 51.64 49.00 46.82 44.98 43.39 41.98
9.8 2.94 63.84 55.94 52.59 49.91 47.69 45.82 44.20 42.77
9.9 2.97 64.98 56.96 53.55 50.82 48.56 46.67 45.02 43.57
10.0 3.00 66.14 57.98 54.52 51.74 49.45 47.52 45.84 44.37
10.1 3.03 67.30 59.01 55.49 52.67 50.34 48.38 46.67 45.18
10.2 3.06 68.48 60.05 56.47 53.61 51.24 49.25 47.51 45.99
10.3 3.09 69.66 61.10 57.46 54.55 52.15 50.12 48.36 46.81
10.4 3.12 70.85 62.15 58.46 55.51 53.06 51.01 49.21 47.64
10.5 3.15 72.05 63.22 59.47 56.47 53.98 51.89
50.07 48.48
10.6 3.18 73.26 64.29 60.48 57.43 54.91 52.79 50.94 49.32
10.7 3.21 74.47 65.37 61.50 58.41 55.84 53.69 51.82 50.17
10.8 3.24 75.70 66.46 62.53 59.39 56.79 54.60 52.70 51.02
10.9 3.27 76.93 67.55 63.57 60.38 57.74 55.52 53.58 51.89
11.0 3.30 78.18 68.66 64.61 61.37 58.69 56.44 54.48 52.75
11.1 3.33 79.43 69.77 65.67 62.38 59.66 57.37 55.38 53.63
11.2 3.36 80.69 70.89 66.73 63.39 60.63 58.31 56.29 54.51
11.3 3.39 81.96 72.02 67.79 64.41 61.61 59.25 57.20 55.40
11.4 3.42 83.24 73.16 68.87 65.43 62.59 60.21 58.12 56.30
11.5 3.45 84.53 74.30 69.95 66.47 63.59 61.16 59.05 57.20
11.6 3.48 85.83 75.45 71.04 67.51 64.59 62.13 59.99 58.11
11.7 3.51 87.13 76.61 72.14 68.56 65.59 63.10 60.93 59.02
11.8 3.54 88.45 77.78 73.25 69.61 66.61 64.08 61.88 59.94
11.9 3.57 89.77 78.96 74.36 70.68 67.63 65.07 62.83 60.87
12.0 3.60 91.10 80.14 75.48 71.75 68.66 66.06 63.79 61.81