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The Practical Pumping Handbook .... iii ================================================================

WATER

QP GPM Total Head ft. Eft. BHP
40 348 121 53 20.1

60 522 115.6 66 23.1
80 696 108.6 73 26.1
100 870 99.7 75 29.2
120 1043 87 72.5 31.7

Figure 8.13 Water table (Reproduced with permission of Goulds Pumps, ITT Industries)

Select an impeller diameter for this water rating.
Diameter = 16.875 inches
NOTE: The impeller diameter selected must be approximately equal
to the diameter used in Step 2 above. If the diameters vary
appreciably, repeat Steps 2, 3 & 4.
From Figure 8.12 performance curve, tabulate the water head,
,
the efficiency, the BHP at 40, 60, 80, 100 and 120 percent of
capacity at b.e.p, for the diameter impeller required for the final
rating in Step 5 above.
Tabulate correction factors at the percent capacities above from
o
the correction chart.

STOCK
Kp GPM Total Head ft. BHP Eft.
0.948 330 115.0 20.1 47.7

0.922 481 106.5 23.1 56.0
0.896 624 97.3 26.1 58.7

0.870 757 86.7 29.2 56.8
0.844 881 73.4 31.7 51.5

Figure 8.14 Stock table (Reproduced with permission of Goulds Pumps, ITT Industries)

Iml 140 --~- " ~ ............... -'~:---- --