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PRESSURE DROP IN WATER HOSE


Users of these tables are cautioned that the information in the following tables is intended for general reference and general applicability only, and should not be relied upon as the sole or precise source of information available with respect to the subject covered. The user should also refer to and follow manufacturers' specific instructions and recommendations with regard to such information, where they exist.

This table shows the friction loss in water hose in pounds per square inch per 100 foot length, for straight, smooth bore hose.

Note: Friction loss can vary by up to 20% due to temperature. Bends can increase friction loss by 50%.


Table 1 - ½" through 2½" ID Hose
Flow of Water in GPMActual Inside Diameter in Inches
½"¾"1"1¼"1½"2"2½"
11.41------
25.090.71-----
527.73.850.950.320.13--
1010013.93.421.150.470.12-
15-29.47.242.441.000.250.08
20-50.012.34.161.710.420.14
25-75.618.66.282.590.640.21
30-10626.18.803.620.890.30
35-14134.711.74.821.190.40
40--44.415.06.171.520.51
45--55.318.67.671.890.64
50--67.122.79.322.300.77
60--94.131.713.13.221.09
70--12542.217.44.281.44
80---54.022.25.481.85
90---67.227.76.812.30
100---81.733.68.282.79
125---12350.812.54.22
150----71.117.55.91
175----94.623.37.86
200----12129.810.1
225-----37.112.5
250-----45.115.2
275-----53.818.1
300-----63.221.3
350-----84.028.3
400-----10836.3
450------45.1
500------54.8
600------76.8
700------102
800------131
1000-------


Table 2 - 3" through 12" ID Hose
Flow of Water in GPMActual Inside Diameter in Inches
3"4"5"6"8"10"12"
25-------
300.12------
350.16------
400.21------
450.26------
500.32------
600.45------
700.59------
800.76------
900.950.23-----
1001.150.28-----
1251.740.43-----
1502.430.600.20----
1753.240.800.27----
2004.141.020.34----
2255.151.270.43----
2506.261.540.52----
2757.471.840.62----
3008.772.160.730.30---
35011.72.870.970.40---
40014.93.681.240.51---
45018.64.571.540.64---
50022.65.561.880.770.19--
60031.67.792.631.080.27--
70042.110.43.491.440.350.12-
80053.813.34.471.840.450.15-
100081.420.06.762.780.690.230.10
120011428.19.473.900.960.320.13
140015237.312.65.181.280.430.18
1600-47.816.16.641.640.550.23
1800-59.520.08.252.030.690.28
2000-72.224.410.02.470.830.34
2500--36.815.23.731.260.52
3000---51.621.25.231.760.73

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215 North 20th Street
Tampa, FL, USA 33605
Ph-813-247-3647 Fax-813-247-3180
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