8/13/2019 Fric Loss CopperL

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Nominal Size Nomina

Pipe OD Pipe OD

Pipe ID Pipe ID

Wall thickness Wall thic

Q V Friction V Friction V Friction V Friction V Friction V Friction V Friction V Friction V Friction V Friction V Friction Q

Flow Veloc ity Loss Velocity Loss Velocity Loss Velocity Loss Velocity Loss Velocity Loss Velocity Loss Velocity Loss Velocity Loss Velocity Loss Velocity Loss Flo

GPM FPS PSI FPS PSI FPS PSI FPS PSI FPS PSI FPS PSI FPS PSI FPS PSI FPS PSI FPS PSI FPS PSI GP1 1.39 0.95 0.66 0.16 0.39 0.04 0.25 0.02 0.18 0.01 1

2 2.78 3.44 1.32 0.57 0.78 0.15 0.51 0.06 0.36 0.02 0.21 0.01 2

3 4.17 7.28 1.99 1.20 1.17 0.33 0.76 0.12 0.54 0.05 0.31 0.01 3

4 5.56 12.41 2.65 2.05 1.55 0.56 1.02 0.20 0.72 0.09 0.41 0.02 0.27 0.01 4

5 6.94 18.76 3.31 3.09 1.94 0.84 1.27 0.30 0.90 0.13 0.52 0.03 0.34 0.01 5

6 8.33 26.29 3.97 4.34 2.33 1.18 1.53 0.43 1.08 0.18 0.62 0.05 0.40 0.02 0.28 0.01 6

7 9.72 34.98 4.63 5.77 2.72 1.57 1.78 0.57 1.26 0.24 0.72 0.06 0.47 0.02 0.33 0.01 7

8 11.11 44.79 5.30 7.39 3.11 2.02 2.04 0.72 1.44 0.31 0.83 0.08 0.54 0.03 0.38 0.01 8

9 12.50 55.71 5.96 9.19 3.50 2.51 2.29 0.90 1.62 0.39 0.93 0.10 0.60 0.04 0.42 0.01 9

10 13.89 67.72 6.62 11.17 3.88 3.05 2.55 1.10 1.80 0.47 1.04 0.12 0.67 0.04 0.47 0.02 1

11 7.28 13.32 4.27 3.64 2.80 1.31 1.98 0.56 1.14 0.15 0.74 0.05 0.52 0.02 1

12 7.95 15.65 4.66 4.27 3.06 1.54 2.16 0.66 1.24 0.17 0.81 0.06 0.56 0.03 1

13 8.61 18.15 5.05 4.96 3.31 1.78 2.34 0.76 1.35 0.20 0.87 0.07 0.61 0.03 0.35 0.01 1

14 9.27 20.82 5.44 5.69 3.57 2.04 2.52 0.88 1.45 0.23 0.94 0.08 0.66 0.03 0.37 0.01 14

15 9.93 23.66 5.83 6.46 3.82 2.32 2.70 1.00 1.55 0.26 1.01 0.09 0.71 0.04 0.40 0.01 1

16 10.59 26.66 6.21 7.28 4.08 2.62 2.88 1.12 1.66 0.29 1.07 0.10 0.75 0.04 0.43 0.01 1

17 11.26 29.83 6.60 8.15 4.33 2.93 3.06 1.26 1.76 0.33 1.14 0.11 0.80 0.05 0.45 0.01 1

18 11.92 33.16 6.99 9.06 4.59 3.25 3.24 1.40 1.86 0.36 1.21 0.13 0.85 0.05 0.48 0.01 1

19 12.58 36.66 7.38 10.01 4.84 3.60 3.42 1.54 1.97 0.40 1.28 0.14 0.89 0.06 0.51 0.01 1

20 13.24 40.31 7.77 11.01 5.10 3.95 3.60 1.70 2.07 0.44 1.34 0.15 0.94 0.06 0.54 0.02 2

22 14.57 48.09 8.54 13.13 5.61 4.72 3.96 2.03 2.28 0.53 1.48 0.18 1.03 0.08 0.59 0.02 0.38 0.01 2

24 15.89 56.50 9.32 15.43 6.12 5.54 4.32 2.38 2.49 0.62 1.61 0.22 1.13 0.09 0.64 0.02 0.41 0.01 24

26 10.10 17.89 6.63 6.43 4.68 2.76 2.69 0.72 1.75 0.25 1.22 0.11 0.70 0.03 0.45 0.01 2

28 10.87 20.53 7.14 7.37 5.04 3.17 2.90 0.82 1.88 0.29 1.32 0.12 0.75 0.03 0.48 0.01 2

30 11.65 23.32 7.65 8.38 5.40 3.60 3.11 0.94 2.01 0.33 1.41 0.14 0.80 0.03 0.52 0.01 0.36 0.00 3

35 13.59 31.03 8.92 11.15 6.30 4.79 3.62 1.24 2.35 0.43 1.65 0.18 0.94 0.05 0.60 0.02 0.42 0.01 3

40 15.53 39.73 10.20 14.28 7.21 6.13 4.14 1.59 2.69 0.56 1.88 0.23 1.07 0.06 0.69 0.02 0.48 0.01 4

45 17.48 49.42 11.47 17.75 8.11 7.62 4.66 1.98 3.02 0.69 2.12 0.29 1.20 0.07 0.77 0.03 0.54 0.01 4

50 19.42 60.07 12.75 21.58 9.01 9.27 5.18 2.41 3.36 0.84 2.35 0.35 1.34 0.09 0.86 0.03 0.60 0.01 5

55 14.02 25.75 9.91 11.06 5.70 2.87 3.69 1.00 2.59 0.42 1.47 0.11 0.94 0.04 0.66 0.02 5

60 15.30 30.25 10.81 12.99 6.21 3.38 4.03 1.18 2.82 0.50 1.61 0.13 1.03 0.04 0.72 0.02 6

65 16.57 35.08 11.71 15.06 6.73 3.92 4.36 1.37 3.06 0.57 1.74 0.15 1.12 0.05 0.78 0.02 6

70 17.85 40.24 12.61 17.28 7.25 4.49 4.70 1.57 3.29 0.66 1.87 0.17 1.20 0.06 0.84 0.02 7

75 19.12 45.73 13.51 19.64 7.77 5.11 5.04 1.78 3.53 0.75 2.01 0.19 1.29 0.06 0.90 0.03 7

80 20.40 51.53 14.41 22.13 8.28 5.75 5.37 2.01 3.76 0.84 2.14 0.21 1.37 0.07 0.96 0.03 8

85 21.67 57.66 15.31 24.76 8.80 6.44 5.71 2.24 4.00 0.94 2.27 0.24 1.46 0.08 1.02 0.03 8

90 22.95 64.09 16.21 27.52 9.32 7.16 6.04 2.49 4.23 1.05 2.41 0.27 1.55 0.09 1.07 0.04 9

95 17.11 30.42 9.84 7.91 6.38 2.76 4.47 1.16 2.54 0.29 1.63 0.10 1.13 0.04 9

100 18.01 33.45 10.35 8.70 6.71 3.03 4.70 1.28 2.68 0.32 1.72 0.11 1.19 0.05 10

110 19.81 39.91 11.39 10.38 7.39 3.62 5.17 1.52 2.94 0.39 1.89 0.13 1.31 0.05 11

120 21.62 46.89 12.43 12.19 8.06 4.25 5.65 1.79 3.21 0.45 2.06 0.15 1.43 0.06 12

130 23.42 54.38 13.46 14.14 8.73 4.93 6.12 2.07 3.48 0.53 2.23 0.18 1.55 0.07 13

140 14.50 16.22 9.40 5.65 6.59 2.38 3.75 0.60 2.40 0.20 1.67 0.08 14

150 15.53 18.43 10.07 6.43 7.06 2.70 4.01 0.68 2.58 0.23 1.79 0.10 15

160 16.57 20.77 10.74 7.24 7.53 3.05 4.28 0.77 2.75 0.26 1.91 0.11 16

170 17.60 23.24 11.41 8.10 8.00 3.41 4.55 0.86 2.92 0.29 2.03 0.12 17

180 18.64 25.83 12.09 9.01 8.47 3.79 4.82 0.96 3.09 0.33 2.15 0.13 18

190 12.76 9.95 8.94 4.19 5.08 1.06 3.26 0.36 2.27 0.15 19

200 13.43 10.95 9.41 4.61 5.35 1.17 3.43 0.40 2.39 0.16 20

225 15.11 13.61 10.58 5.73 6.02 1.45 3.86 0.49 2.69 0.20 22

250 16.79 16.55 11.76 6.96 6.69 1.76 4.29 0.60 2.99 0.25 25

275 18.47 19.74 12.94 8.31 7.36 2.10 4.72 0.71 3.28 0.30 27

300 20.14 23.19 14.11 9.76 8.03 2.47 5.15 0.84 3.58 0.35 30

325 15.29 11.32 8.70 2.87 5.58 0.97 3.88 0.40 32

350 16.46 12.98 9.36 3.29 6.01 1.12 4.18 0.46 35

375 17.64 14.75 10.03 3.74 6.44 1.27 4.48 0.53 37

400 18.82 16.63 10.70 4.21 6.87 1.43 4.78 0.59 40

425 19.99 18.60 11.37 4.71 7.30 1.60 5.08 0.66 42

450 21.17 20.68 12.04 5.24 7.73 1.78 5.37 0.74 45

475 22.35 22.86 12.71 5.79 8.15 1.97 5.67 0.81 47

500 23.52 25.13 13.38 6.37 8.58 2.16 5.97 0.89 50

550 14.72 7.60 9.44 2.58 6.57 1.07 55

600 16.05 8.93 10.30 3.03 7.17 1.25 60

Shaded Area represents Velocities over 5 FPS. Use with caution.

OD = Outside Diameter; ID = Inside Diameter; FPS = Feet Per Second; GPM = Gallons Per Minute C = Smoothness (roughness) coefficient used in Hazen William's Equation

SDR = Standard Dimension Ratio

Velocity FPS calculated using formula: V = 0.408 x Friction Losses (PSI) calculated using Hazen William's formula: 4.56 x 100 x Q1.852

C1.852

x ID4.866

These values are calculated using above formula. Values may vary from other published data due to rounding. Values should be used with caution on large systems. Ramesh Kumar, Cal Poly, Pomona.

0.875

0.785

0.045

Table 10: Friction Losses and Velocity in Pipes - Type "L" CopperWater TubeC = 140

Pressure Loss (psi) per 100 feet of pipe

0.75" 6"

6.125

5.845

0.140

5"

5.125

4.875

0.125

4"

4.125

3.905

0.110

3"

3.125

2.945

0.090

2.5"

2.625

2.465

0.080

2"

2.125

1.985

0.070

1.5"

1.625

1.505

0.060

1.25"

1.375

1.265

0.055

1"

1.125

1.025

0.050

0.5"

0.625

0.542

0.040

Q

(ID)2 PSI Loss =