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Polyethylene (PE) distribution tubing friction loss |
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distribution tubing size |
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1/8" .118 ID x .190 OD |
1/4" .160 ID x .240 OD |
1/4" .160 ID x .220 OD |
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GPM |
Velocity F.P.S |
Head loss (PSI) |
Velocity F.P.S |
Head loss (PSI) |
Velocity F.P.S |
Head loss (PSI) |
| 0.25 | 0.38 | 0.09 | 0.28 | 0.04 | 0.15 | 0.01 |
| 0.50 | 0.75 | 0.32 | 0.57 | 0.16 | 0.30 | 0.02 |
| 0.75 | 1.13 | 0.68 | 0.85 | 0.34 | 0.44 | 0.07 |
| 1.00 | 1.51 | 1.17 | 1.13 | 0.58 | 0.59 | 0.12 |
| 1.25 | 1.89 | 1.76 | 1.42 | 0.88 | 0.74 | 0.18 |
| 1.50 | 2.26 | 2.47 | 1.70 | 1.23 | 0.89 | 0.25 |
| 2.00 | 3.02 | 4.21 | 2.27 | 2.10 | 1.18 | 0.43 |
| 2.50 | 3.77 | 6.36 | 2.83 | 3.17 | 1.48 | 0.65 |
| 3.00 | 4.53 | 8.91 | 3.40 | 4.44 | 1.78 | 0.92 |
| 3.50 | 5.28 | 11.86 | 3.97 | 5.91 | 2.07 | 1.22 |
| 4.00 | 6.04 | 15.19 | 4.53 | 7.57 | 2.37 | 1.56 |
| 4.50 | 6.79 | 18.89 | 5.10 | 9.41 | 2.67 | 1.94 |
| 5.00 | 7.54 | 22.96 | 5.67 | 11.44 | 2.96 | 2.36 |
| 5.50 | 8.30 | 27.39 | 6.23 | 13.65 | 3.26 | 2.91 |
| 6.00 | 9.05 | 32.18 | 6.80 | 16.04 | 3.55 | 3.31 |
| 6.50 | 7.37 | 18.60 | 3.85 | 3.84 | ||
| 7.00 | 7.93 | 21.30 | 4.15 | 4.40 | ||
| 7.50 | 8.50 | 24.25 | 4.44 | 5.00 | ||