Page 46 - HVAC Pump Handbook

Rishel_CH03.qxd 20/4/06 5:35 PM Page 43

Piping System Friction
TABLE 3.5 Flow of Water in Steel Pipe (Continued )
5-in schedule 40, 6-in schedule 40, 8-in schedule 40,
ID 5.047 in ID 6.065 in ID 7.981 in
V
V
V
Flow, 2 Hf, 2 Hf, 2 Hf,
gal/min V, ft/s 2 g, ft ft/100 ft V, ft/s 2 g, ft ft/100 ft V, ft/s 2 g, ft ft/100 ft
0030 00.48 00.004 00.024 00.33 00.002 00.010 00.19 0.001 00.003
0040 00.64 00.006 00.040 00.44 00.003 00.016 00.26 0.001 00.004
0050 00.80 00.010 00.059 00.56 00.005 00.024 00.32 0.002 00.007
0060 00.96 00.014 00.081 00.67 00.007 00.034 00.39 0.002 00.009
0070 01.12 00.020 00.108 00.78 00.009 00.045 00.45 0.003 00.012
0080 01.28 00.026 00.137 00.89 00.012 00.056 00.51 0.004 00.015
0090 01.44 00.032 00.169 01.00 00.016 00.070 00.58 0.005 00.019
0100 01.60 00.040 00.204 01.11 00.019 00.084 00.64 0.006 00.022
0120 01.92 00.058 00.286 01.33 00.028 00.118 00.77 0.009 00.031
0140 02.25 00.078 00.380 01.55 00.038 00.155 00.90 0.013 00.041
0160 02.57 00.102 00.487 01.78 00.049 00.198 01.03 0.016 00.052
0180 02.89 00.129 00.606 02.00 00.062 00.246 01.15 0.021 00.064
0200 03.21 00.160 00.736 02.22 00.077 00.299 01.28 0.026 00.078
0220 03.53 00.193 00.879 02.44 00.093 00.357 01.41 0.031 00.093
0240 03.85 00.230 01.035 02.66 00.110 00.419 01.54 0.037 00.109
0260 04.17 00.270 01.20 02.89 00.130 00.487 01.67 0.043 00.126
0280 04.49 00.313 01.38 03.11 00.150 00.560 01.80 0.050 00.144
0300 04.81 00.360 01.58 03.33 00.172 00.637 01.92 0.058 00.163
0320 05.13 00.409 01.78 03.55 00.196 00.719 02.05 0.066 00.184
0340 05.45 00.462 02.00 03.78 00.222 00.806 02.18 0.074 00.206
0360 05.77 00.518 02.22 04.00 00.240 00.898 02.31 0.083 00.229
0380 06.09 00.577 02.46 04.22 00.277 00.993 02.44 0.092 00.253
0400 06.41 00.639 02.72 04.44 00.307 01.09 02.57 0.102 00.279
0420 06.74 00.705 02.98 04.66 00.338 01.20 02.70 0.113 00.308
0440 07.06 00.774 03.26 04.89 00.371 01.31 02.83 0.124 00.338
0460 07.38 00.846 03.55 05.11 00.405 01.42 02.96 0.135 00.369
0480 07.70 00.921 03.85 05.33 00.442 01.54 03.08 0.147 00.402
0500 08.02 01.0 04.16 05.55 00.479 01.66 03.21 0.160 00.424
0550 08.82 01.21 04.98 06.11 00.580 01.99 03.53 0.193 00.507
0600 09.62 01.44 05.88 06.66 00.690 02.34 03.85 0.230 00.597
0650 10.4 01.69 06.87 07.22 00.810 02.73 04.17 0.271 00.694
0700 11.2 01.96 07.93 07.77 00.939 03.13 04.49 0.313 00.797
0750 12.0 02.25 09.05 08.33 01.08 03.57 04.81 0.360 00.907
0800 12.8 02.56 10.22 08.88 01.23 04.03 05.13 0.409 01.02
0850 13.6 02.89 11.5 09.44 01.38 04.53 05.45 0.462 01.15
0900 14.4 03.24 12.9 09.99 01.55 05.05 05.77 0.518 01.27
0950 15.2 03.61 14.3 10.5 01.73 05.60 06.09 0.577 01.41
1000 16.0 04.00 15.8 11.1 01.92 06.17 06.41 0.639 01.56
1100 17.6 04.84 19.0 12.2 02.32 07.41 07.05 0.773 01.87
1200 19.2 05.76 22.5 13.3 02.76 08.76 07.70 0.920 02.20
1300 20.8 06.75 26.3 14.4 03.24 10.2 08.34 1.08 02.56
1400 22.5 07.83 30.4 15.5 03.76 11.8 08.98 1.25 02.95
1500 24.1 08.99 34.8 16.7 04.31 13.5 09.62 1.44 03.37
1600 25.7 10.2 39.5 17.8 04.91 15.4 10.3 1.64 03.82
1700 27.3 11.6 44.5 18.9 05.54 17.3 10.9 1.85 04.29
1800 28.8 12.9 49.7 20.0 06.21 19.4 11.5 2.07 04.79
1900 30.5 14.4 55.2 21.1 06.92 21.6 12.2 2.31 05.31
2000 32.1 16.0 61.0 22.2 07.67 23.8 12.8 2.56 05.86
2200 24.4 09.27 28.8 14.1 3.09 07.02
2400 26.6 11.1 34.2 15.4 3.68 08.31
2600 16.7 4.32 09.70
2800 18.0 5.01 11.20
3000 19.2 5.75 12.8
2
NOTE: V velocity, feet per second; V /2g velocity head, feet; Hf friction loss, feet
per 100 feet of pipe. No aging factor, manufacturer’s tolerance, or any factor of safety
has been included in the friction losses Hf.

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