The handbook of Technical irrigaTion informaTion - Hunter Industries

Friction Loss ChartsNominalSizePipe IDPipe ODWall Thick3"2.913.000.045VelocityPortable Aluminum Pipe with CouplingsK = 0.40PRESSURE LOSS PER 100 FEET OF PIPE (PSI) SIZES 3" THROUGH 10"4"3.914.000.045Velocity6"5.886.000.060Velocity7"6.877.000.065Velocity8"7.868.000.070Velocity10"9.8210.000.090NominalSizePipe IDPipe ODWall ThickVelocityFPS PSI Loss Flow GPMFlow GPM FPS PSI Loss FPS PSI Loss FPS PSI Loss FPS PSI Loss FPS PSI Loss5 0.24 0.01 0.13 0.00 510 0.48 0.04 0.27 0.01 1015 0.72 0.08 0.40 0.02 1520 0.96 0.14 0.53 0.03 0.24 0.00 2025 1.20 0.22 0.67 0.03 0.29 0.01 2530 1.44 0.30 0.80 0.07 0.35 0.01 0.26 0.00 3035 1.68 0.41 0.94 0.10 0.41 0.01 0.30 0.01 3540 1.92 0.53 1.07 0.13 0.47 0.02 0.35 0.01 0.26 0.00 4045 2.16 0.66 1.20 0.16 0.53 0.02 0.39 0.01 0.30 0.01 4550 2.40 0.80 1.34 0.16 0.59 0.03 0.43 0.01 0.33 0.01 5060 2.88 1.13 1.60 0.27 0.71 0.04 0.52 0.02 0.40 0.01 6070 3.36 1.52 1.87 0.36 0.82 0.05 0.60 0.02 0.46 0.01 0.30 0.00 7080 3.84 1.96 2.14 0.47 0.94 0.06 0.69 0.03 0.53 0.02 0.34 0.01 8090 4.32 2.45 2.41 0.58 1.06 0.08 0.78 0.04 0.59 0.02 0.38 0.01 90100 4.80 3.00 2.67 0.58 1.18 0.10 0.86 0.04 0.66 0.02 0.42 0.01 100110 5.29 3.59 2.94 0.85 1.30 0.11 0.95 0.05 0.73 0.03 0.47 0.01 110120 5.77 4.24 3.21 1.01 1.41 0.14 1.04 0.06 0.79 0.03 0.51 0.01 120130 6.25 4.93 3.48 1.17 1.53 0.16 1.12 0.07 0.86 0.04 0.55 0.01 130140 6.73 5.68 3.74 1.35 1.65 0.18 1.21 0.08 0.93 0.04 0.59 0.01 140150 7.21 6.47 4.01 1.35 1.77 0.21 1.30 0.10 0.99 0.05 0.63 0.02 150160 7.69 7.32 4.28 1.74 1.89 0.23 1.38 0.11 1.06 0.06 0.68 0.02 160170 8.17 8.21 4.55 1.95 2.00 0.26 1.47 0.12 1.12 0.06 0.72 0.02 170180 8.65 9.15 4.81 2.18 2.12 0.29 1.56 0.14 1.19 0.07 0.76 0.02 180190 9.13 10.14 5.08 2.41 2.24 0.32 1.64 0.15 1.26 0.08 0.80 0.03 190200 9.61 11.18 5.35 2.41 2.36 0.36 1.73 0.17 1.32 0.09 0.85 0.03 200225 10.81 13.98 6.02 3.33 2.65 0.45 1.94 0.21 1.49 0.11 0.95 0.04 225250 12.01 17.08 6.69 4.07 2.95 0.55 2.16 0.26 1.65 0.13 1.06 0.04 250275 13.21 20.48 7.35 4.87 3.24 0.65 2.38 0.31 1.82 0.16 1.16 0.05 275300 14.41 24.16 8.02 5.75 3.54 0.77 2.59 0.36 1.98 0.19 1.27 0.06 300325 15.62 28.12 8.69 5.75 3.83 0.90 2.81 0.42 2.15 0.22 1.38 0.07 325350 16.82 32.38 9.36 7.70 4.12 1.03 3.02 0.48 2.31 0.25 1.48 0.08 350375 18.02 36.91 10.03 8.78 4.42 1.18 3.24 0.55 2.48 0.29 1.59 0.10 375400 19.22 41.73 10.70 9.93 4.71 1.33 3.46 0.62 2.64 0.32 1.69 0.11 400425 11.37 11.14 5.01 1.50 3.67 0.70 2.81 0.36 1.80 0.12 425450 12.03 11.14 5.30 1.67 3.89 0.78 2.97 0.40 1.90 0.14 450475 12.70 13.76 5.60 1.85 4.10 0.86 3.14 0.45 2.01 0.15 475500 13.37 15.17 5.89 2.04 4.32 0.95 3.31 0.49 2.12 0.17 500550 14.71 18.18 6.48 2.44 4.75 1.14 3.64 0.59 2.33 0.20 550600 16.05 21.45 7.07 2.88 5.18 1.35 3.97 0.70 2.54 0.23 600650 17.38 21.45 7.66 3.35 5.62 1.57 4.30 0.81 2.75 0.27 650700 18.72 28.75 8.25 3.86 6.05 1.81 4.63 0.94 2.96 0.31 700750 8.84 4.40 6.48 2.06 4.96 1.07 3.17 0.36 750800 9.43 4.98 6.91 2.33 5.29 1.21 3.39 0.41 800850 10.02 5.58 7.34 2.61 5.62 1.35 3.60 0.45 850900 10.61 6.23 7.78 2.91 5.95 1.51 3.81 0.51 9001000 11.78 7.61 8.64 3.55 6.61 1.85 4.23 0.62 10001100 12.96 9.11 9.50 4.26 7.27 2.21 4.66 0.74 11001200 14.14 10.75 10.37 5.03 7.93 2.61 5.08 0.88 12001300 15.32 12.52 11.23 5.85 8.59 3.04 5.50 1.02 13001400 16.50 14.41 12.10 6.74 9.26 3.50 5.93 1.17 14001500 17.68 16.43 12.96 7.68 9.92 3.99 6.35 1.34 15001600 18.86 18.58 13.82 8.68 10.58 4.51 6.77 1.51 16001700 Friction losses calculated14.69 9.74 11.24 5.06 7.20 1.70 17001800using the Scobey Formula.15.55 10.86 11.90 5.64 7.62 1.89 18001900 16.42 12.03 12.56 6.25 8.04 2.10 19002000 17.28 13.27 13.22 6.89 8.47 2.31 20002250 19.44 16.59 14.87 8.61 9.52 2.89 22502500 16.53 10.52 10.58 3.53 25002750 Shaded area represents velocities18.18 12.61 11.64 4.23 27503000 over 5 fps. Use with caution where19.83 14.88 12.70 4.99 30003250 13.76 5.81 32503500water hammer is a concern.14.81 6.69 35003750 15.87 7.63 37504000 16.93 8.62 40004250 17.99 9.67 4250115