Page 28 - KeyFireCatalog2010

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FLOW OF
WATER IN
US GAL.
ACTUAL INTERNAL DIAMETER INCHES
PER MIN.
1"
1-1/2" 1-3/4"
2"
2-1/2"
3"
3-1/2"
4"
5"
40
44.7
45
55.0
50
67.5
60
94.3
8.7
4.9
2.2
0.73
70
126.0 11.9
6.6
2.9
0.98
80
15.4
8.6
3.9
1.3
90
19.5 10.9
4.9
1.7
100
24.1 13.5
6.1
2.0
110
29
16.3
7.3
2.4
120
34.6 19.4
8.6
2.9
130
40.6 22.8 10.2
3.5
140
47.0 26.5 11.8
4.0
150
54.0 30.4 13.5
4.5
160
61.4 34.6 15.4
5.1
180
77.8 43.7 19.4
6.5
200
54.0 24.1
8.1
3.3
220
65.3 29.0
9.7
4.0
240
77.8 34.6 11.5
4.6
250
84.4 37.5 12.6
5.0
280
105.8 47.0 15.7
6.4
300
54.1
18
7.2
320
61.4 20.5
8.2
340
69.4 23.1
9.3
350
77.9 24.5
9.9
380
86.6 28.9 11.6
400
96.1 32.1 12.9
6.3
3.2
1.1
450
35.4 16.3
7.9
4.1
1.3
500
20.0
9.6
5.0
1.7
550
24.2 11.6
6.0
2.0
600
28.8 13.5
7.3
2.3
650
33.9 15.5
8.6
2.9
700
39.3 17.7
9.7
3.2
750
45.0 20.2 11.5
3.7
800
51.2 22.7 12.4
4.2
850
57.8 25.4 14.3
4.8
900
64.8 28.2 15.9
5.4
950
72.2 31.3 17.6
6.1
1000
34.1 19.2
6.6
1050
37.6 21.2
7.4
1100
41.1 23.3
8.0
1150
45.0 25.4
8.7
1250
53.1 30.0 10.3
1300
57.1 32.4 11.2
1400
66.7 37.7 12.9
1500
76.5 43.2 15.0
1750
58.8 20.2
NOTE: The pressure loss experienced by a liquid flowing
The pressure loss is directly proportional to the
through a hose depends on the rate of flow , the viscosity of
length of the hose, therefore the data shown can
the liquid, the hose I.D..the smoothness of the tube and the
be easily extended by use of proportions , e.g.,
hose length. This chart shows the relationship between rate
the pressure drop for 50 feet of hose length is half that
of flow,I.D., and the pressure loss
for 100 ft. NOTE:To find cubic ft/min. multiply GPM x .13380
KEY FIRE HOSE CORPORATION
WATER FLOW LOSS
(PSI PER 100 FEET OF HOSE)