Franklin Electric Inline 400, Owner'S Manual, Page: 19 / 72

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