Appendix 2: Friction Loss Tables - Franklin Electric Inline 400 Owner's Manual

Appendix 2: Friction Loss Tables

¾" Pipe
Flow Velocity
GPM Ft / S
2 1.20
3 1.80
4 2 .41
5 3.01
6 3.61
7 4 .21
8 4 .81
9 5 .41
10 6.02
1" Pipe
Flow Velocity
GPM Ft / S
2 0.74
4 1 .48
6 2.23
8 2 .97
10 3.71
12 4 .45
14 5.20
16 5 .94
18 6 .68
1¼" Pipe
Flow Velocity
GPM Ft / S
4 0.86
6 1 .29
8 1 .72
10 2 .15
12 2 .57
14 3.00
16 3.43
18 3.86
20 4 .29
25 5.36
Note: Charts show friction loss per 100' of pipe. To convert to friction loss per foot, move decimal point two places to the left.
Inline Pressure Boosting System
Friction Loss
Ft Hd / 100'
Steel PVC
(C = 100) (C = 140)
1.93 1.03
4.09 2 .19
6 .96 3.73
10.53 5 .64
14 .75 7 .91
19.63 10.53
25.13 13.48
31.26 16 .76
38.00 20.38
Friction Loss
Ft Hd / 100'
Steel PVC
(C = 100) (C = 140)
0.60 0.32
2 .15 1 .15
4 .56 2 .44
7 .76 4 .16
11 .74 6 .29
16 .45 8 .82
21 .89 11 .74
28.03 15.03
34.86 18.70
Friction Loss
Ft Hd / 100'
Steel PVC
(C = 100) (C = 140)
0.57 0.30
1.20 0.64
2.04 1.10
3.09 1 .66
4.33 2.32
5 .76 3.09
7.38 3.96
9 .18 4 .92
11 .16 5 .98
16 .87 9.05
Fric Loss
Ft Hd / 100'
Velocity
Ft / S
Copper
(C = 130)
1.33 1.50
1 .99 3.18
2 .65 5 .42
3.31 8.20
3.98 11 .49
4 .64 15 .29
5.30 19 .57
5 .97 24.35
6.63 29 .59
Fric Loss
Ft Hd / 100'
Velocity
Ft / S
Copper
(C = 130)
0.78 0.41
1 .56 1 .48
2.33 3.14
3.11 5.35
3.89 8.08
4 .67 11.33
5 .44 15.07
6 .22 19.30
7.00 24.00
Fric Loss
Ft Hd / 100'
Velocity
Ft / S
Copper
(C = 130)
1.02 0.53
1.53 1.13
2.04 1 .92
2 .55 2.90
3.06 4.07
3.57 5 .41
4.08 6.93
4 .59 8 .62
5 .11 10.48
6.38 15 .85
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