Polyethylene - PE - Pipes - Pressure Drop
Water flow in SDR pressure rated pipes - pressure loss and velocity tables - imperial and SI units
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The pressure drop calculations below are made with the D'Arcy-Weisbach Equation.
- Fluid : Water
- Pipe : Polyethylene (PE) SDR Pressure Rated Tube
- Temperature : 20.0 oC (68.0 oF)
- Density : 998.3 kg/m3 (62.0 lb/ft3)
- Kinematic Viscosity : 1.004 10-6 m2/s (0.01 stokes) (1.08E-5 ft2/s)
- Pipe Roughness Coefficient : 3.0 10-6 (m)
Nominal Pipe Size: 1/2"
- Inside Diameter: 0.0158 m (0.62 inches)
| Flow | Velocity | Pressure Drop | ||||||
| (m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
| 3.0E-5 | 0.03 | 0.48 | 0.153 | 0.5 | 3550 | 362 | 0.157 | 0.36 |
| 4.0E-5 | 0.04 | 0.63 | 0.2 | 0.67 | 5785 | 590 | 0.26 | 0.59 |
| 5.0E-5 | 0.05 | 0.79 | 0.26 | 0.84 | 8629 | 880 | 0.38 | 0.88 |
| 6.0E-5 | 0.06 | 0.95 | 0.31 | 1.0 | 11834 | 1207 | 0.52 | 1.21 |
| 7.0E-5 | 0.07 | 1.11 | 0.36 | 1.17 | 15302 | 1560 | 0.68 | 1.56 |
| 8.0E-5 | 0.08 | 1.27 | 0.41 | 1.34 | 19460 | 1984 | 0.86 | 1.99 |
| 9.0E-5 | 0.09 | 1.43 | 0.46 | 1.51 | 23298 | 2376 | 1.03 | 2.4 |
| 1.0E-4 | 0.1 | 1.59 | 0.51 | 1.67 | 28763 | 2933 | 1.27 | 2.9 |
| 1.1E-4 | 0.11 | 1.74 | 0.56 | 1.84 | 33809 | 3447 | 1.49 | 3.5 |
| 1.2E-4 | 0.12 | 1.9 | 0.61 | 2.0 | 39052 | 3982 | 1.73 | 4.0 |
| 1.3E-4 | 0.13 | 2.1 | 0.66 | 2.2 | 44443 | 4532 | 1.96 | 4.5 |
| 1.4E-4 | 0.14 | 2.2 | 0.71 | 2.3 | 51543 | 5256 | 2.3 | 5.3 |
| 1.5E-4 | 0.15 | 2.4 | 0.77 | 2.5 | 57321 | 5845 | 2.5 | 5.9 |
| 1.6E-4 | 0.16 | 2.5 | 0.82 | 2.7 | 65218 | 6650 | 2.9 | 6.7 |
| 1.7E-4 | 0.17 | 2.7 | 0.87 | 2.8 | 71250 | 7265 | 3.1 | 7.3 |
| 1.8E-4 | 0.18 | 2.9 | 0.92 | 3.0 | 79879 | 8145 | 3.5 | 8.2 |
| 1.9E-4 | 0.19 | 3.0 | 0.97 | 3.2 | 89001 | 9075 | 3.9 | 9.1 |
| 2.0E-4 | 0.2 | 3.2 | 1.02 | 3.3 | 95329 | 9721 | 4.2 | 9.7 |
| 3.0E-4 | 0.3 | 4.8 | 1.53 | 5.0 | 199697 | 20363 | 8.8 | 20 |
Nominal Pipe Size: 3/4"
- Inside Diameter: 0.021 m (0.82 inches)
| Flow | Velocity | Pressure Drop | ||||||
| (m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
| 4.0E-5 | 0.04 | 0.63 | 0.115 | 0.38 | 1522 | 155 | 0.067 | 0.155 |
| 5.0E-5 | 0.05 | 0.79 | 0.144 | 0.47 | 2229 | 227 | 0.099 | 0.23 |
| 6.0E-5 | 0.06 | 0.95 | 0.173 | 0.57 | 3067 | 313 | 0.136 | 0.31 |
| 7.0E-5 | 0.07 | 1.11 | 0.2 | 0.66 | 3980 | 406 | 0.176 | 0.41 |
| 8.0E-5 | 0.08 | 1.27 | 0.23 | 0.76 | 4945 | 504 | 0.22 | 0.5 |
| 9.0E-5 | 0.09 | 1.43 | 0.26 | 0.85 | 6099 | 622 | 0.27 | 0.62 |
| 1.0E-4 | 0.1 | 1.59 | 0.29 | 0.95 | 7331 | 748 | 0.32 | 0.75 |
| 1.1E-4 | 0.11 | 1.74 | 0.32 | 1.04 | 8631 | 880 | 0.38 | 0.88 |
| 1.2E-4 | 0.12 | 1.9 | 0.35 | 1.14 | 9986 | 1018 | 0.44 | 1.02 |
| 1.3E-4 | 0.13 | 2.1 | 0.38 | 1.23 | 11720 | 1195 | 0.52 | 1.2 |
| 1.4E-4 | 0.14 | 2.2 | 0.4 | 1.33 | 13204 | 1346 | 0.58 | 1.35 |
| 1.5E-4 | 0.15 | 2.4 | 0.43 | 1.42 | 14711 | 1500 | 0.65 | 1.5 |
| 1.6E-4 | 0.16 | 2.5 | 0.46 | 1.52 | 16738 | 1707 | 0.74 | 1.71 |
| 1.7E-4 | 0.17 | 2.7 | 0.49 | 1.61 | 18323 | 1868 | 0.81 | 1.87 |
| 1.8E-4 | 0.18 | 2.9 | 0.52 | 1.7 | 20542 | 2095 | 0.91 | 2.1 |
| 1.9E-4 | 0.19 | 3.0 | 0.55 | 1.8 | 22888 | 2334 | 1.01 | 2.3 |
| 2.0E-4 | 0.2 | 3.2 | 0.58 | 1.89 | 24568 | 2505 | 1.09 | 2.5 |
| 3.0E-4 | 0.3 | 4.8 | 0.87 | 2.8 | 49929 | 5091 | 2.2 | 5.1 |
| 4.0E-4 | 0.4 | 6.3 | 1.15 | 3.8 | 85593 | 8728 | 3.8 | 8.7 |
| 5.0E-4 | 0.5 | 7.9 | 1.44 | 4.7 | 123833 | 12627 | 5.5 | 12.6 |
| 6.0E-4 | 0.6 | 9.5 | 1.73 | 5.7 | 171186 | 17456 | 7.6 | 17.5 |
Nominal Pipe Size: 1"
- Inside Diameter: 0.027 m (1.05 inches)
| Flow | Velocity | Pressure Drop | ||||||
| (m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
| 7.0E-5 | 0.07 | 1.11 | 0.122 | 0.4 | 1216 | 124 | 0.054 | 0.124 |
| 8.0E-5 | 0.08 | 1.27 | 0.14 | 0.46 | 1516 | 155 | 0.067 | 0.155 |
| 9.0E-5 | 0.09 | 1.43 | 0.157 | 0.52 | 1873 | 191 | 0.083 | 0.191 |
| 1.0E-4 | 0.1 | 1.59 | 0.175 | 0.57 | 2256 | 230 | 0.1 | 0.23 |
| 1.1E-4 | 0.11 | 1.74 | 0.192 | 0.63 | 2661 | 271 | 0.118 | 0.27 |
| 1.2E-4 | 0.12 | 1.9 | 0.21 | 0.69 | 3086 | 315 | 0.136 | 0.31 |
| 1.3E-4 | 0.13 | 2.1 | 0.23 | 0.74 | 3526 | 360 | 0.156 | 0.36 |
| 1.4E-4 | 0.14 | 2.2 | 0.24 | 0.8 | 3979 | 406 | 0.176 | 0.41 |
| 1.5E-4 | 0.15 | 2.4 | 0.26 | 0.86 | 4568 | 466 | 0.2 | 0.47 |
| 1.6E-4 | 0.16 | 2.5 | 0.28 | 0.92 | 5053 | 515 | 0.22 | 0.52 |
| 1.7E-4 | 0.17 | 2.7 | 0.3 | 0.97 | 5541 | 565 | 0.24 | 0.57 |
| 1.8E-4 | 0.18 | 2.9 | 0.31 | 1.03 | 6212 | 633 | 0.27 | 0.63 |
| 1.9E-4 | 0.19 | 3.0 | 0.33 | 1.09 | 6718 | 685 | 0.3 | 0.69 |
| 2.0E-4 | 0.2 | 3.2 | 0.35 | 1.15 | 7444 | 759 | 0.33 | 0.76 |
| 3.0E-4 | 0.3 | 4.8 | 0.52 | 1.72 | 15226 | 1553 | 0.67 | 1.55 |
| 4.0E-4 | 0.4 | 6.3 | 0.7 | 2.3 | 25264 | 2576 | 1.12 | 2.6 |
| 5.0E-4 | 0.5 | 7.9 | 0.87 | 2.9 | 38066 | 3882 | 1.68 | 3.9 |
| 6.0E-4 | 0.6 | 9.5 | 1.05 | 3.4 | 52785 | 5382 | 2.3 | 5.4 |
| 7.0E-4 | 0.7 | 11.1 | 1.22 | 4.0 | 69083 | 7044 | 3.1 | 7.1 |
| 8.0E-4 | 0.8 | 12.7 | 1.4 | 4.6 | 86621 | 8833 | 3.8 | 8.8 |
| 9.0E-4 | 0.9 | 14.3 | 1.57 | 5.2 | 109630 | 11179 | 4.8 | 11.2 |
| 0.0010 | 1.0 | 15.9 | 1.75 | 5.7 | 129706 | 13226 | 5.7 | 13.2 |
| 0.0011 | 1.1 | 17.4 | 1.92 | 6.3 | 156944 | 16004 | 6.9 | 16.0 |
| 0.0012 | 1.2 | 19.0 | 2.1 | 6.9 | 178656 | 18218 | 7.9 | 18.2 |
Nominal Pipe Size: 1 1/4"
- Inside Diameter: 0.035 m (1.38 inches)
| Flow | Velocity | Pressure Drop | ||||||
| (m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
| 1.3E-4 | 0.13 | 2.1 | 0.135 | 0.44 | 1041 | 106 | 0.046 | 0.106 |
| 1.4E-4 | 0.14 | 2.2 | 0.146 | 0.48 | 1178 | 120 | 0.052 | 0.12 |
| 1.5E-4 | 0.15 | 2.4 | 0.156 | 0.51 | 1317 | 134 | 0.058 | 0.134 |
| 1.6E-4 | 0.16 | 2.5 | 0.166 | 0.55 | 1459 | 149 | 0.064 | 0.149 |
| 1.7E-4 | 0.17 | 2.7 | 0.177 | 0.58 | 1647 | 168 | 0.073 | 0.168 |
| 1.8E-4 | 0.18 | 2.9 | 0.187 | 0.61 | 1797 | 183 | 0.079 | 0.183 |
| 1.9E-4 | 0.19 | 3.0 | 0.197 | 0.65 | 2002 | 204 | 0.088 | 0.2 |
| 2.0E-4 | 0.2 | 3.2 | 0.21 | 0.68 | 2157 | 220 | 0.095 | 0.22 |
| 3.0E-4 | 0.3 | 4.8 | 0.31 | 1.02 | 4437 | 452 | 0.196 | 0.45 |
| 4.0E-4 | 0.4 | 6.3 | 0.42 | 1.36 | 7395 | 754 | 0.33 | 0.75 |
| 5.0E-4 | 0.5 | 7.9 | 0.52 | 1.7 | 10785 | 1100 | 0.48 | 1.1 |
| 6.0E-4 | 0.6 | 9.5 | 0.62 | 2.0 | 14975 | 1527 | 0.66 | 1.53 |
| 7.0E-4 | 0.7 | 11.1 | 0.73 | 2.4 | 19628 | 2001 | 0.87 | 2.0 |
| 8.0E-4 | 0.8 | 12.7 | 0.83 | 2.7 | 24651 | 2514 | 1.09 | 2.5 |
| 9.0E-4 | 0.9 | 14.3 | 0.94 | 3.1 | 31199 | 3181 | 1.38 | 3.2 |
| 0.0010 | 1.0 | 15.9 | 1.04 | 3.4 | 36976 | 3770 | 1.63 | 3.8 |
| 0.0011 | 1.1 | 17.4 | 1.14 | 3.8 | 44741 | 4562 | 1.98 | 4.6 |
| 0.0012 | 1.2 | 19.0 | 1.25 | 4.1 | 51027 | 5203 | 2.3 | 5.2 |
| 0.0013 | 1.3 | 21 | 1.35 | 4.4 | 59886 | 6107 | 2.6 | 6.1 |
| 0.0014 | 1.4 | 22 | 1.46 | 4.8 | 69454 | 7082 | 3.1 | 7.1 |
| 0.0015 | 1.5 | 24 | 1.56 | 5.1 | 76263 | 7777 | 3.4 | 7.8 |
| 0.0016 | 1.6 | 25 | 1.66 | 5.5 | 86771 | 8848 | 3.8 | 8.9 |
| 0.0017 | 1.7 | 27 | 1.77 | 5.8 | 97956 | 9989 | 4.3 | 10.0 |
| 0.0018 | 1.8 | 29 | 1.87 | 6.1 | 109819 | 11198 | 4.9 | 11.2 |
| 0.0019 | 1.9 | 30 | 1.97 | 6.5 | 116799 | 11910 | 5.2 | 11.9 |
| 0.0020 | 2.0 | 32 | 2.1 | 6.8 | 129417 | 13197 | 5.7 | 13.2 |
Nominal Pipe Size: 1 1/2"
- Inside Diameter: 0.041 m (1.61 inches)
| Flow | Velocity | Pressure Drop | ||||||
| (m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
| 2.0E-4 | 0.2 | 3.2 | 0.151 | 0.5 | 1034 | 105 | 0.046 | 0.106 |
| 3.0E-4 | 0.3 | 4.8 | 0.23 | 0.75 | 2074 | 212 | 0.092 | 0.21 |
| 4.0E-4 | 0.4 | 6.3 | 0.3 | 0.99 | 3464 | 353 | 0.153 | 0.35 |
| 5.0E-4 | 0.5 | 7.9 | 0.38 | 1.24 | 5064 | 516 | 0.22 | 0.52 |
| 6.0E-4 | 0.6 | 9.5 | 0.45 | 1.49 | 7040 | 718 | 0.31 | 0.72 |
| 7.0E-4 | 0.7 | 11.1 | 0.53 | 1.74 | 9240 | 942 | 0.41 | 0.94 |
| 8.0E-4 | 0.8 | 12.7 | 0.61 | 1.99 | 11622 | 1185 | 0.51 | 1.19 |
| 9.0E-4 | 0.9 | 14.3 | 0.68 | 2.2 | 14709 | 1500 | 0.65 | 1.5 |
| 0.0010 | 1.0 | 15.9 | 0.76 | 2.5 | 17461 | 1781 | 0.77 | 1.78 |
| 0.0011 | 1.1 | 17.4 | 0.83 | 2.7 | 21128 | 2154 | 0.93 | 2.2 |
| 0.0012 | 1.2 | 19.0 | 0.91 | 3.0 | 24138 | 2461 | 1.07 | 2.5 |
| 0.0013 | 1.3 | 21 | 0.98 | 3.2 | 28329 | 2889 | 1.25 | 2.9 |
| 0.0014 | 1.4 | 22 | 1.06 | 3.5 | 31486 | 3211 | 1.39 | 3.2 |
| 0.0015 | 1.5 | 24 | 1.14 | 3.7 | 36145 | 3686 | 1.6 | 3.7 |
| 0.0016 | 1.6 | 25 | 1.21 | 4.0 | 41124 | 4193 | 1.82 | 4.2 |
| 0.0017 | 1.7 | 27 | 1.29 | 4.2 | 44407 | 4528 | 1.96 | 4.5 |
| 0.0018 | 1.8 | 29 | 1.36 | 4.5 | 49785 | 5077 | 2.2 | 5.1 |
| 0.0019 | 1.9 | 30 | 1.44 | 4.7 | 55470 | 5656 | 2.5 | 5.7 |
| 0.0020 | 2.0 | 32 | 1.51 | 5.0 | 61463 | 6267 | 2.7 | 6.3 |
| 0.0030 | 3.0 | 48 | 2.3 | 7.5 | 125720 | 12820 | 5.6 | 12.8 |
Nominal Pipe Size: 2"
- Inside Diameter: 0.053 m (2.1 inches)
| Flow | Velocity | Pressure Drop | ||||||
| (m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
| 4.0E-4 | 0.4 | 6.3 | 0.181 | 0.59 | 1022 | 104 | 0.045 | 0.104 |
| 5.0E-4 | 0.5 | 7.9 | 0.23 | 0.74 | 1500 | 153 | 0.066 | 0.153 |
| 6.0E-4 | 0.6 | 9.5 | 0.27 | 0.89 | 2090 | 213 | 0.092 | 0.21 |
| 7.0E-4 | 0.7 | 11.1 | 0.32 | 1.04 | 2750 | 280 | 0.122 | 0.28 |
| 8.0E-4 | 0.8 | 12.7 | 0.36 | 1.19 | 3467 | 354 | 0.153 | 0.35 |
| 9.0E-4 | 0.9 | 14.3 | 0.41 | 1.34 | 4232 | 432 | 0.187 | 0.43 |
| 0.0010 | 1.0 | 15.9 | 0.45 | 1.49 | 5031 | 513 | 0.22 | 0.51 |
| 0.0011 | 1.1 | 17.4 | 0.5 | 1.64 | 6087 | 621 | 0.27 | 0.62 |
| 0.0012 | 1.2 | 19.0 | 0.54 | 1.78 | 6966 | 710 | 0.31 | 0.71 |
| 0.0013 | 1.3 | 21 | 0.59 | 1.93 | 8175 | 834 | 0.36 | 0.83 |
| 0.0014 | 1.4 | 22 | 0.63 | 2.1 | 9481 | 967 | 0.42 | 0.97 |
| 0.0015 | 1.5 | 24 | 0.68 | 2.2 | 10449 | 1065 | 0.46 | 1.07 |
| 0.0016 | 1.6 | 25 | 0.73 | 2.4 | 11888 | 1212 | 0.53 | 1.21 |
| 0.0017 | 1.7 | 27 | 0.77 | 2.5 | 13421 | 1369 | 0.59 | 1.37 |
| 0.0018 | 1.8 | 29 | 0.82 | 2.7 | 14419 | 1470 | 0.64 | 1.47 |
| 0.0019 | 1.9 | 30 | 0.86 | 2.8 | 16066 | 1638 | 0.71 | 1.64 |
| 0.0020 | 2.0 | 32 | 0.91 | 3.0 | 17802 | 1815 | 0.79 | 1.82 |
| 0.0030 | 3.0 | 48 | 1.36 | 4.5 | 36571 | 3729 | 1.62 | 3.7 |
| 0.0040 | 4.0 | 63 | 1.81 | 5.9 | 61919 | 6314 | 2.7 | 6.3 |
| 0.0050 | 5.0 | 79 | 2.3 | 7.4 | 91911 | 9372 | 4.1 | 9.4 |
| 0.0060 | 6.0 | 95 | 2.7 | 8.9 | 132351 | 13496 | 5.8 | 13.5 |
| 0.0070 | 7.0 | 111 | 3.2 | 10.4 | 170663 | 17403 | 7.5 | 17.4 |
Nominal Pipe Size: 2 1/2"
- Inside Diameter: 0.063 m (2.5 inches)
| Flow | Velocity | Pressure Drop | ||||||
| (m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
| 7.0E-4 | 0.7 | 11.1 | 0.22 | 0.74 | 1199 | 122 | 0.053 | 0.122 |
| 8.0E-4 | 0.8 | 12.7 | 0.26 | 0.84 | 1513 | 154 | 0.067 | 0.154 |
| 9.0E-4 | 0.9 | 14.3 | 0.29 | 0.95 | 1849 | 189 | 0.082 | 0.189 |
| 0.0010 | 1.0 | 15.9 | 0.32 | 1.05 | 2201 | 224 | 0.097 | 0.22 |
| 0.0011 | 1.1 | 17.4 | 0.35 | 1.16 | 2664 | 272 | 0.118 | 0.27 |
| 0.0012 | 1.2 | 19.0 | 0.38 | 1.26 | 3053 | 311 | 0.135 | 0.31 |
| 0.0013 | 1.3 | 21 | 0.42 | 1.37 | 3583 | 365 | 0.158 | 0.37 |
| 0.0014 | 1.4 | 22 | 0.45 | 1.47 | 3995 | 407 | 0.177 | 0.41 |
| 0.0015 | 1.5 | 24 | 0.48 | 1.58 | 4586 | 468 | 0.2 | 0.47 |
| 0.0016 | 1.6 | 25 | 0.51 | 1.68 | 5218 | 532 | 0.23 | 0.53 |
| 0.0017 | 1.7 | 27 | 0.55 | 1.79 | 5655 | 577 | 0.25 | 0.58 |
| 0.0018 | 1.8 | 29 | 0.58 | 1.89 | 6340 | 647 | 0.28 | 0.65 |
| 0.0019 | 1.9 | 30 | 0.61 | 2.0 | 7064 | 720 | 0.31 | 0.72 |
| 0.0020 | 2.0 | 32 | 0.64 | 2.1 | 7827 | 798 | 0.35 | 0.8 |
| 0.0030 | 3.0 | 48 | 0.96 | 3.2 | 16144 | 1646 | 0.71 | 1.65 |
| 0.0040 | 4.0 | 63 | 1.28 | 4.2 | 27396 | 2794 | 1.21 | 2.8 |
| 0.0050 | 5.0 | 79 | 1.6 | 5.3 | 40768 | 4157 | 1.8 | 4.2 |
| 0.0060 | 6.0 | 95 | 1.92 | 6.3 | 55771 | 5687 | 2.5 | 5.7 |
| 0.0070 | 7.0 | 111 | 2.2 | 7.4 | 75910 | 7741 | 3.4 | 7.7 |
| 0.0080 | 8.0 | 127 | 2.6 | 8.4 | 93929 | 9578 | 4.2 | 9.6 |
| 0.0090 | 9.0 | 143 | 2.9 | 9.5 | 118879 | 12122 | 5.3 | 12.1 |
| 0.01 | 10.0 | 159 | 3.2 | 10.5 | 138611 | 14134 | 6.1 | 14.1 |
| 0.011 | 11.0 | 174 | 3.5 | 11.6 | 167719 | 17102 | 7.4 | 17.1 |
| 0.012 | 12.0 | 190 | 3.8 | 12.6 | 199600 | 20353 | 8.8 | 20 |
Nominal Pipe Size: 3"
- Inside Diameter: 0.078 m (3.1 inches)
| Flow | Velocity | Pressure Drop | ||||||
| (m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
| 0.0012 | 1.2 | 19.0 | 0.25 | 0.82 | 1130 | 115 | 0.05 | 0.115 |
| 0.0013 | 1.3 | 21 | 0.27 | 0.89 | 1279 | 130 | 0.057 | 0.131 |
| 0.0014 | 1.4 | 22 | 0.29 | 0.96 | 1483 | 151 | 0.066 | 0.151 |
| 0.0015 | 1.5 | 24 | 0.31 | 1.03 | 1640 | 167 | 0.072 | 0.167 |
| 0.0016 | 1.6 | 25 | 0.33 | 1.1 | 1865 | 190 | 0.082 | 0.19 |
| 0.0017 | 1.7 | 27 | 0.36 | 1.17 | 2106 | 215 | 0.093 | 0.21 |
| 0.0018 | 1.8 | 29 | 0.38 | 1.24 | 2270 | 231 | 0.1 | 0.23 |
| 0.0019 | 1.9 | 30 | 0.4 | 1.3 | 2529 | 258 | 0.112 | 0.26 |
| 0.0020 | 2.0 | 32 | 0.42 | 1.37 | 2803 | 286 | 0.124 | 0.29 |
| 0.0030 | 3.0 | 48 | 0.63 | 2.1 | 5802 | 592 | 0.26 | 0.59 |
| 0.0040 | 4.0 | 63 | 0.84 | 2.7 | 9417 | 960 | 0.42 | 0.96 |
| 0.0050 | 5.0 | 79 | 1.05 | 3.4 | 14014 | 1429 | 0.62 | 1.43 |
| 0.0060 | 6.0 | 95 | 1.26 | 4.1 | 20180 | 2058 | 0.89 | 2.1 |
| 0.0070 | 7.0 | 111 | 1.46 | 4.8 | 26093 | 2661 | 1.15 | 2.7 |
| 0.0080 | 8.0 | 127 | 1.67 | 5.5 | 34081 | 3475 | 1.51 | 3.5 |
| 0.0090 | 9.0 | 143 | 1.88 | 6.2 | 40864 | 4167 | 1.81 | 4.2 |
| 0.01 | 10.0 | 159 | 2.1 | 6.9 | 50449 | 5144 | 2.2 | 5.1 |
| 0.011 | 11.0 | 174 | 2.3 | 7.6 | 61043 | 6225 | 2.7 | 6.2 |
| 0.012 | 12.0 | 190 | 2.5 | 8.2 | 72646 | 7408 | 3.2 | 7.4 |
| 0.013 | 13.0 | 206 | 2.7 | 8.9 | 80522 | 8211 | 3.6 | 8.2 |
| 0.014 | 14.0 | 222 | 2.9 | 9.6 | 93386 | 9523 | 4.1 | 9.5 |
| 0.015 | 15.0 | 238 | 3.1 | 10.3 | 107204 | 10932 | 4.7 | 10.9 |
| 0.016 | 16.0 | 254 | 3.3 | 11.0 | 121974 | 12438 | 5.4 | 12.5 |
| 0.017 | 17.0 | 269 | 3.6 | 11.7 | 137697 | 14041 | 6.1 | 14.1 |
| 0.018 | 18.0 | 285 | 3.8 | 12.4 | 145293 | 14815 | 6.4 | 14.8 |
| 0.019 | 19.0 | 301 | 4.0 | 13.0 | 161885 | 16507 | 7.2 | 16.5 |
| 0.02 | 20 | 317 | 4.2 | 13.7 | 179373 | 18291 | 7.9 | 18.3 |
Nominal Pipe Size: 4"
- Inside Diameter: 0.102 m (4.0 inches)
| Flow | Velocity | Pressure Drop | ||||||
| (m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
| 0.0030 | 3.0 | 48 | 0.37 | 1.2 | 1583 | 161 | 0.07 | 0.162 |
| 0.0040 | 4.0 | 63 | 0.49 | 1.61 | 2697 | 275 | 0.119 | 0.28 |
| 0.0050 | 5.0 | 79 | 0.61 | 2.0 | 4031 | 411 | 0.178 | 0.41 |
| 0.0060 | 6.0 | 95 | 0.73 | 2.4 | 5541 | 565 | 0.24 | 0.57 |
| 0.0070 | 7.0 | 111 | 0.86 | 2.8 | 7183 | 732 | 0.32 | 0.73 |
| 0.0080 | 8.0 | 127 | 0.98 | 3.2 | 9381 | 957 | 0.41 | 0.96 |
| 0.0090 | 9.0 | 143 | 1.1 | 3.6 | 11279 | 1150 | 0.5 | 1.15 |
| 0.01 | 10.0 | 159 | 1.22 | 4.0 | 13925 | 1420 | 0.62 | 1.42 |
| 0.011 | 11.0 | 174 | 1.35 | 4.4 | 16850 | 1718 | 0.74 | 1.72 |
| 0.012 | 12.0 | 190 | 1.47 | 4.8 | 18997 | 1937 | 0.84 | 1.94 |
| 0.013 | 13.0 | 206 | 1.59 | 5.2 | 22295 | 2273 | 0.99 | 2.3 |
| 0.014 | 14.0 | 222 | 1.71 | 5.6 | 25857 | 2637 | 1.14 | 2.6 |
| 0.015 | 15.0 | 238 | 1.84 | 6.0 | 29683 | 3027 | 1.31 | 3.0 |
| 0.016 | 16.0 | 254 | 1.96 | 6.4 | 31896 | 3252 | 1.41 | 3.3 |
| 0.017 | 17.0 | 269 | 2.1 | 6.8 | 36008 | 3672 | 1.59 | 3.7 |
| 0.018 | 18.0 | 285 | 2.2 | 7.2 | 40369 | 4116 | 1.78 | 4.1 |
| 0.019 | 19.0 | 301 | 2.3 | 7.6 | 44979 | 4586 | 1.99 | 4.6 |
| 0.02 | 20 | 317 | 2.4 | 8.0 | 49838 | 5082 | 2.2 | 5.1 |
| 0.03 | 30 | 476 | 3.7 | 12.0 | 105539 | 10762 | 4.7 | 10.8 |
| 0.04 | 40 | 634 | 4.9 | 16.1 | 175898 | 17936 | 7.8 | 18.0 |
Nominal Pipe Size: 6"
- Inside Diameter: 0.154 m (6.1 inches)
| Flow | Velocity | Pressure Drop | ||||||
| (m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
| 0.0070 | 7.0 | 111 | 0.38 | 1.23 | 1007 | 103 | 0.045 | 0.103 |
| 0.0080 | 8.0 | 127 | 0.43 | 1.41 | 1256 | 128 | 0.055 | 0.128 |
| 0.0090 | 9.0 | 143 | 0.48 | 1.59 | 1589 | 162 | 0.07 | 0.162 |
| 0.01 | 10.0 | 159 | 0.54 | 1.76 | 1868 | 191 | 0.083 | 0.191 |
| 0.011 | 11.0 | 174 | 0.59 | 1.94 | 2261 | 231 | 0.1 | 0.23 |
| 0.012 | 12.0 | 190 | 0.64 | 2.1 | 2691 | 274 | 0.119 | 0.27 |
| 0.013 | 13.0 | 206 | 0.7 | 2.3 | 3000 | 306 | 0.133 | 0.31 |
| 0.014 | 14.0 | 222 | 0.75 | 2.5 | 3479 | 355 | 0.154 | 0.36 |
| 0.015 | 15.0 | 238 | 0.81 | 2.6 | 3994 | 407 | 0.177 | 0.41 |
| 0.016 | 16.0 | 254 | 0.86 | 2.8 | 4544 | 463 | 0.2 | 0.46 |
| 0.017 | 17.0 | 269 | 0.91 | 3.0 | 4860 | 496 | 0.21 | 0.5 |
| 0.018 | 18.0 | 285 | 0.97 | 3.2 | 5448 | 556 | 0.24 | 0.56 |
| 0.019 | 19.0 | 301 | 1.02 | 3.3 | 6071 | 619 | 0.27 | 0.62 |
| 0.02 | 20 | 317 | 1.07 | 3.5 | 6726 | 686 | 0.3 | 0.69 |
| 0.03 | 30 | 476 | 1.61 | 5.3 | 14294 | 1458 | 0.63 | 1.46 |
| 0.04 | 40 | 634 | 2.1 | 7.0 | 23916 | 2439 | 1.06 | 2.4 |
| 0.05 | 50 | 793 | 2.7 | 8.8 | 35033 | 3572 | 1.55 | 3.6 |
| 0.06 | 60 | 951 | 3.2 | 10.6 | 50448 | 5144 | 2.2 | 5.1 |
| 0.07 | 70 | 1110 | 3.8 | 12.3 | 68665 | 7002 | 3.0 | 7.0 |
| 0.08 | 80 | 1268 | 4.3 | 14.1 | 83706 | 8535 | 3.7 | 8.5 |
| 0.09 | 90 | 1427 | 4.8 | 15.9 | 105940 | 10803 | 4.7 | 10.8 |
| 0.1 | 100 | 1585 | 5.4 | 17.6 | 130790 | 13337 | 5.8 | 13.4 |
| 0.11 | 110 | 1744 | 5.9 | 19.4 | 158256 | 16137 | 7.0 | 16.2 |
| 0.12 | 120 | 1902 | 6.4 | 21 | 188338 | 19205 | 8.3 | 19.2 |
- 1 psi (lb/in2) = 6,894.8 Pa (N/m2) = 6.895x10-3 N/mm2 = 6.895x10-2 bar = 27.71 in H2O at 62oF (16.7oC) = 703.1 mm H2O at 62oF (16.7oC) = 2.0416 in mercury at 62oF (16.7oC) = 51.8 mm mercury at 62oF (16.7oC) = 703.6 kg/m2 = 0.06895 atm = 2.307 Ft. H2O = 16 ounces
- 1 ft/s = 0.3048 m/s
- 1 gal (US)/min =6.30888x10-5 m3/s = 0.0227 m3/h = 0.06309 dm3(litre)/s = 2.228x10-3 ft3/s = 0.1337 ft3/min = 0.8327 Imperial gal (UK)/min
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