User guide

TABLE 3-3.
HOSE FRICTION LOSS (PSI PER 100 FEET)
GPM Flowing ¾” Booster 1” Booster 1 1/2” Hose GPM Flowing 1 ¾” Hose with 1 1/2” Couplings 2” Hose with 1 1/2” couplings 2 1/2” Hose 3" Hose with 2 1/2" Couplings 3" Hose GPM Flowing 3 1/2" Hose 4" Hose 5" Hose
10 13.5 3.5 95 14 8 500 9.5 3
20 44 6 125 24 13 750 20 11 5
30 99 14 150 35 18 1000 34 20 8
40 176 24 4 175 47 25 6 1250 53 31 13
50 38 7 200 62 32 8 1500 74 45 18
60 54 9 225 10 1750 61 25
70 12 250 13 5 4 2000 32
80 15 275 15
95 22 300 18
125 38 325 22 8
150 54 350 25 8
500 20 17
750 45 38
1000 80 68
NOTE: Add 5 PSI for each story of building and each wye or siamese. Friction Loss
Calculations courtesy of IFSTA.