Saint Remy VFD Water Flow Table


This chart shows approximate maximum water flows for supply lines at
150, 200, and 250 PSI pump pressures with a residual pressure of 10PSI

The table is based upon the 2Q*Q friction loss formula for 2½" line.


Pump Size NeededGreen=1000 Blue=1250 Violet=1500 Red=2000 Yellow=Not Practical
Length2½" Hose 3" Hose 4" Hose (2x3") 5" Hose 3" and 2-1/2"
Feet150#200#250#150#200# 250#150#200#250#150#200# 250#150#200#250#
100 837 975 1095 1323 1541 1732 2646 3082 3464 4506 5249 5899 2160 2516 2827
200 592 689 775 935 1090 1225 1871 2179 2449 3186 3711 4171 1527 1779 1999
300 483 563 632 764 890 1000 1528 1780 2000 2601 3030 3406 1247 1452 1632
400 418 487 548 661 771 866 1323 1541 1732 2253 2624 2950 1080 1258 1414
500 374 436 490 592 689 775 1183 1378 1549 2015 2347 2638 966 1125 1264
600 342 398 447 540 629 707 1080 1258 1414 1839 2143 2408 882 1027 1154
700 316 368 414 500 582 655 1000 1165 1309 1703 1984 2230 816 951 1069
800 296 345 387 468 545 612 935 1090 1225 1593 1856 2086 764 889 1000
900 279 325 365 441 514 577 882 1027 1155 1502 1750 1966 720 839 942
1000 265 308 346 418 487 548 837 975 1095 1425 1660 1865 683 796 894
1100 252 294 330 399 465 522 798 929 1044 1358 1583 1779 651 759 853
1200 242 281 316 382 445 500 764 890 1000 1301 1515 1703 623 726 816
1300 232 270 304 367 427 480 734 855 961 1250 1456 1636 599 698 784
1400 224 260 293 354 412 463 707 824 926 1204 1403 1577 577 672 756
1500 216 252 283 342 398 447 683 796 894 1163 1355 1523 558 650 730
1600 209 244 274 331 385 433 661 771 866 1126 1312 1475 540 629 707
1700 203 236 266 321 374 420 642 748 840 1093 1273 1431 524 610 686
1800 197 230 258 312 363 408 624 726 816 1062 1237 1390 509 593 666
1900 192 224 251 303 354 397 607 707 795 1034 1204 1353 495 577 649
2000 187 218 245 296 345 387 592 689 775 1007 1174 1319 483 563 632
2100 183 213 239 289 336 378 577 673 756 983 1145 1287 471 549 617
2200 178 208 234 282 329 369 564 657 739 961 1119 1258 460 536 603
2300 174 203 228 276 321 361 552 643 722 939 1094 1230 450 525 590
2400 171 199 224 270 315 354 540 629 707 920 1071 1204 441 514 577
2500 167 195 219 265 308 346 529 616 693 901 1050 1180 432 503 565
2600 164 191 215 259 302 340 519 604 679 884 1029 1157 424 493 555
2700 161 188 211 255 297 333 509 593 667 867 1010 1135 416 484 544
2800 158 184 207 250 291 327 500 582 655 851 992 1115 408 475 534
2900 155 181 203 246 286 322 491 572 643 837 975 1095 401 467 525
3000 153 178 200 242 281 316 483 563 632 823 958 1077 394 459 516

3" FL/100 feet is 0.8*Q*Q 4" flow = 2 * 3" flow 5" flow = 3.4 * 3" flow
4"FL = 3"FL/45"FL = 3"FL/11.6



This page is maintained by Karl Wick (karlwick@ulster.net)

©1997 Karl R. Wick All Rights Reserved.
This chart to be used by properly trained professionals only. Actual values will vary with field conditions.