| Table Losses same for all | |||||||||||||
| Cotrolled OD SDR 21 thermoplastic pipe. | |||||||||||||
| PRESSURE LOSS | |||||||||||||
| C = 150 | 200psi PR SDR 21 PVC PIPE | ||||||||||||
| Pipe Sizes: Nominal Losses per 100 ft: lb/in2 | |||||||||||||
| gpm | 1/2 in(1) | 3/4 in | 1 in | 1-1/4 in | 1-1/2 in | 2 in | gpm | 2 in | 2-1/2 in | 3 in | 4 in | 6 in | 8 in |
| 1 | 0.248 | 0.067 | 0.020 | 0.006 | 0.003 | 0.001 | 105 | 5.92 | 2.32 | 0.885 | 0.260 | 0.040 | 0.011 |
| 2 | 0.896 | .243 | .072 | .023 | .012 | .004 | 110 | 6.45 | 2.53 | 0.964 | .284 | .043 | .012 |
| 3 | 1.90 | .515 | .152 | .048 | .025 | .008 | 115 | 2.74 | 1.05 | .308 | .047 | .013 | |
| 4 | 3.23 | 0.876 | .259 | .082 | .042 | .014 | 120 | 2.97 | 1.13 | .333 | .051 | .014 | |
| 5 | 4.88 | 1.32 | .391 | .123 | .063 | .021 | 125 | 3.20 | 1.22 | .359 | .055 | .015 | |
| 6 | 6.84 | 1.86 | .548 | .173 | .089 | .030 | 130 | 3.44 | 1.31 | .386 | .059 | .016 | |
| 7 | 9.09 | 2.47 | .729 | .230 | .118 | .039 | 135 | 3.69 | 1.41 | .414 | .063 | .017 | |
| 8 | 11.64 | 3.16 | 0.934 | .294 | .151 | .051 | 140 | 3.95 | 1.51 | .443 | .068 | .019 | |
| 9 | 14.48 | 3.93 | 1.16 | .366 | .188 | .063 | 145 | 4.21 | 1.61 | .473 | .072 | .020 | |
| 10 | 17.59 | 4.77 | 1.41 | 0.445 | 0.228 | 0.076 | 150 | 4.48 | 1.71 | 0.503 | 0.077 | 0.021 | |
| 11 | 20.98 | 5.69 | 1.68 | .531 | .272 | .091 | 160 | 5.05 | 1.93 | .567 | .086 | .024 | |
| 12 | 24.65 | 6.69 | 1.98 | .623 | .320 | .107 | 170 | 2.16 | .634 | .097 | .027 | ||
| 13 | 7.75 | 2.29 | .723 | .371 | .124 | 180 | 2.40 | .705 | .108 | .030 | |||
| 14 | 8.89 | 2.63 | .829 | .425 | .142 | 190 | 10 in | 2.65 | .779 | .119 | .033 | ||
| 15 | 10.11 | 2.99 | 0.942 | .483 | .162 | 200 | 0.012 | 2.91 | .857 | .131 | .036 | ||
| 16 | 11.39 | 3.37 | 1.06 | .544 | .182 | 210 | .014 | 3.19 | 0.938 | .143 | .040 | ||
| 17 | 12.74 | 3.77 | 1.19 | .609 | .204 | 220 | .015 | 3.48 | 1.02 | .156 | .043 | ||
| 18 | 14.16 | 4.19 | 1.32 | .677 | .226 | 230 | .016 | 3.77 | 1.11 | .169 | .047 | ||
| 19 | 2-1/2 in | 15.65 | 4.63 | 1.46 | .748 | .250 | 240 | .017 | 4.08 | 1.20 | .183 | .051 | |
| 20 | 0.108 | 17.21 | 5.09 | 1.60 | 0.823 | 0.275 | 250 | .019 | 1.29 | 0.197 | 0.055 | ||
| 22 | .129 | 6.07 | 1.91 | 0.981 | .328 | 260 | .020 | 1.39 | .212 | .059 | |||
| 24 | .151 | 7.13 | 2.25 | 1.15 | .386 | 270 | .022 | 1.49 | .228 | .063 | |||
| 26 | .175 | 8.27 | 2.61 | 1.34 | .447 | 280 | .023 | 1.60 | .244 | .067 | |||
| 28 | .201 | 9.48 | 2.99 | 1.53 | .513 | 290 | .025 | 12 in | 1.70 | .260 | .072 | ||
| 30 | .228 | 10.77 | 3.40 | 1.74 | .583 | 300 | 0.026 | 0.011 | 1.81 | .277 | .076 | ||
| 32 | .257 | 12.14 | 3.83 | 1.96 | .657 | 325 | .030 | .013 | 2.10 | .321 | .089 | ||
| 34 | .288 | 13.58 | 4.28 | 2.20 | .735 | 350 | .035 | .015 | 2.41 | .368 | .102 | ||
| 36 | .320 | 4.76 | 2.44 | .816 | 375 | .040 | .017 | 2.74 | .418 | .116 | |||
| 38 | .354 | 3 in | 5.26 | 2.70 | .902 | 400 | .045 | .019 | 3.09 | .471 | .130 | ||
| 40 | 0.389 | 0.148 | 5.78 | 2.97 | 0.992 | 425 | .050 | .022 | .527 | .146 | |||
| 42 | .426 | .162 | 6.33 | 3.25 | 1.09 | 450 | .055 | .024 | 0.586 | 0.162 | |||
| 44 | .464 | .177 | 6.90 | 3.54 | 1.18 | 475 | .061 | .027 | .647 | .179 | |||
| 46 | .504 | .192 | 7.49 | 3.84 | 1.28 | 500 | 0.067 | 0.029 | .712 | .197 | |||
| 48 | .545 | .208 | 8.10 | 4.15 | 1.39 | 550 | .080 | .035 | .849 | .235 | |||
| 50 | .588 | .224 | 8.74 | 4.48 | 1.50 | 600 | .094 | .041 | 0.997 | .276 | |||
| 52 | .632 | .241 | 9.39 | 4.82 | 1.61 | 650 | .110 | .048 | 1.16 | .320 | |||
| 54 | .677 | .259 | 10.07 | 5.17 | 1.73 | 700 | .126 | .055 | 1.33 | .367 | |||
| 56 | .725 | .277 | 5.53 | 1.85 | 800 | .161 | .070 | 1.70 | .470 | ||||
| (1) 1/2 in SDR 21 not standard. For convenience, losses for SDR 13.5 listed. | |||||||||||||
| POLY VINYL CHLORIDE (PVC) PLASTIC PIPE | |||||||||||||
| Pressure loss tables are provided for both SDR-PR and | |||||||||||||
| Schedule Wall PVC pipe. | |||||||||||||
| Unlike many pipes, the standard wall thickness of PVC | |||||||||||||
| pipe has a plus tolerance only, ranging from 0.020 in to | |||||||||||||
| 0.090 in. Many pressure loss tables use the standard | |||||||||||||
| minimum wall (without tolerances) for computation purposes. | |||||||||||||
| Since maufacturing processes preclude | |||||||||||||
| achievement of this thickness, most all PVC pipe will | |||||||||||||
| have a thicker wall and consequently a smaller ID. | |||||||||||||
| Accordingly, use of the standard wall to prepare loss | |||||||||||||
| tables is not realistic. The loss tables here use | |||||||||||||
| a wall thickness which includes one-half of the tolerances. | |||||||||||||
| This results in a more realistic average ID. This | |||||||||||||
| method of determining ID for calculation of pressure | |||||||||||||
| losses is recommended by the Plastic Pipe Institute (PPI). | |||||||||||||
| Caution should be exercised to control velocities in PVC | |||||||||||||
| pipe to avoid damage from pressure surging (water hammer). | |||||||||||||
| Note: PVC pressure loss tables can be used for any | |||||||||||||
| controlled OD thermoplastic pipe of the same SDR or | |||||||||||||
| Schedule number. | |||||||||||||
