Discharge Measurement Chart

Home Discharge Measurement Chart

EXAMPLE

  • HORIZONTAL DISTANCE "X" = 20"
  • NORMAL PIPE DIAMETER "D" = 2"
  • DISCHARGE Q = 111GPM
  • FOR CONVERSION OF GALLONS PER MINUTE
  • TO LITERS PER SECONDS :
  • 111 GPM = 111 X 4.54 /60 = 8.40LPS
HORIZONTAL
DISTANCE "X"
IN INCHES		 NOMINAL PIPE DIAMETER "D"
1" 11/4" 11/2" 2" 21/2" 3" 4" 5" 6"
4 5.7 9.8 13.3 22 31 49 83 130 190
5 7.1 12.2 16.6 28 39 61 104 165 240
6 8.5 14.7 20 33 47 73 125 195 285
7 10 17.1 23.2 39 55 85 146 230 335
8 11.3 19.6 26.5 44 62 98 166 260 380
9 12.8 22 29.8 50 70 110 187 295 430
10 14.2 24.5 33.2 55 78 122 208 325 475
11 15.6 26 36.5 61 86 134 229 360 525
12 17 29 39 66 94 147 250 390 570
13 18.5 31.5 43 72 101 159 270 425 620
14 20 34 46.5 77 109 171 291 450 665
15 21.3 36.3 49.6 83 117 183 312 490 710
16 22.7 39 53 88 125 196 333 520 760
17 24.1 41.5 56.3 94 133 208 353 555 810
18 25.5 43.7 59.6 99 140 220 374 590 855
19 27 46.2 62.9 105 148 232 395 620 905
20 28.4 48.6 66.2 111 156 244 416 650 950
21 29.8 51 69.5 116 164 256 437 685 1000
22 31.2 53.5 72.8 122 172 269 457 720 1050
23 32.7 55.9 76.1 127 179 281 478 750 1095
24 34.1 58.3 79.4 133 187 293 499 780 1140
25 35.5 60.7 82.7 138 195 306 520 815 1190
26 36.9 63.2 86 144 203 318 541 845 1235
27 38.3 65.6 89.3 149 211 330 561 880 1285
28 39.8 68 92.7 155 218 342 582
29 41.2 70.5 96 160 226 354 603
30 42.6 72.9 99.3 166 234 367 624
31 103 171 242 379
32 106 177 250 391
33 109 182 257 403
34 113 188 265 415
35 116 194 273 428
36 119 199 281 440