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FRICTION LOSS CHART
Friction Loss Per 100 Feet of Pipe of plastic pipe
PIPE DIAMETER
1/2 in.
3/4 in.
1 in.
1 1/4 in.
1 1/2 in.
2 in.
2 1/2 in.
3 in.
4 in.
5 in.
GPM
SCH
40
80
1
2.08
4.02
0.51
0.86
2
4.16
8.03
1.02
1.72
0.55
0.88
0.14
0.21
0.07
0.10
5
23.44
45.23
5.73
9.67
2.75
0.44
0.66
0.22
0.30
0.066
0.038
0.05
0.015
0.02
7
43.06
83.07
10.52
17.76
3.17
5.04
0.81
1.21
0.38
0.11
0.15
0.051
0.021
0.028
10
82.02
-
20.04
33.84
6.02
9.61
1.55
2.30
0.72
1.04
0.29
0.09
0.12
0.03
0.04
15
42.46
71.70
12.77
20.36
3.28
4.87
1.53
2.20
0.45
0.62
0.19
0.26
20
72.34
21.75
34.68
5.59
8.30
2.61
3.75
0.76
1.06
0.32
25
32.88
52.43
8.45
12.55
3.95
5.67
1.15
1.60
0.49
0.67
0.17
0.06
30
46.08
73.48
11.85
17.59
5.53
7.95
1.62
2.25
0.68
0.94
0.23
0.31
0.08
35
15.76
23.40
7.36
10.58
2.15
2.99
0.91
1.25
0.42
20.18
29.97
9.43
13.55
3.83
1.16
0.40
0.54
45
25.10
37.27
11.73
16.85
3.43
4.76
1.44
1.99
0.50
0.13
50
30.51
45.30
14.25
20.48
5.79
1.75
2.42
0.60
0.16
60
19.98
28.70
5.84
8.12
2.46
3.39
0.85
1.14
70
7.76
10.80
3.27
4.51
1.13
1.51
0.39
75
8.82
12.27
3.71
5.12
1.28
0.34
9.94
13.83
4.19
5.77
1.94
90
12.37
17.20
5.21
7.18
1.80
2.41
0.47
0.63
0.20
100
15.03
20.90
6.33
8.72
2.18
2.93
0.58
0.24
125
9.58
13.21
3.31
4.43
0.37
150
13.41
18.48
4.63
6.20
1.22
1.61
0.52
175
6.16
8.26
1.63
0.69
200
7.88
10.57
250
11.93
16.00
3.15
1.05
1.34
300
4.41
5.83
1.46
1.87
350
5.87
1.95
2.49
400
7.52
9.93
3.19
450
3.09
3.97
500
