HALE RSD - Page 52

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Table 10. Pressure And Flow For Various Size Nozzles – CONTINUED
Nozzle Size
1 1/2
1 5/8
1 3/4
1 7/8
2
2 1/4
2 1/2
3
Pitot Pressure
Flow (gpm)
30
366 430 498 572 651 824 1017 1464
35
395 464 538 618 703 890 1098 1581
40
423 496 575 660 751 951 1174 1691
45
448 525 610 700 797 1009 1245 1793
50
473 555 643 738 840 1063 1313 1890
55
496 582 675 774 881 1115 1377 1982
60
518 608 705 809 920 1165 1438 2071
62
526 618 716 822 935 1184 1462 2105
64
535 628 728 835 950 1203 1485 2138
66
543 637 739 848 965 1222 1508 2172
68
551 647 750 861 980 1240 1531 2204
70
559 656 761 874 994 1258 1553 2236
72
567 666 772 886 1008 1276 1575 2268
74
575 675 783 898 1022 1293 1597 2299
76
583 684 793 910 1036 1311 1618 2330
78
590 693 803 922 1049 1328 1639 2361
80
598 702 814 934 1063 1345 1660 2391
85
616 723 839 963 1095 1386 1711 2465
90
634 744 863 991 1127 1427 1761 2536
95
651 765 887 1018 1158 1466 1809 2605
100
668 784 910 1044 1188 1504 1856 2673
105
685 804 932 1070 1217 1541 1902 2739
110
701 823 954 1095 1246 1577 1947 2803
115
717 841 976 1120 1274 1613 1991 2867
120
732 859 997 1144 1301 1647 2034 2928
Because NFPA standards specify both flow and pressure, it is usually necessary to restrict the
flow somewhat to build up the pump pressure. In normal pumping, this restriction would be
caused by the friction loss in the lines. However, depending on line loss alone would require a
large amount of hose for some tests. It is common practice to use 50 to 100 ft of hose and gate
the discharge valves as required to maintain pressure.