Law Supply, Inc.
Web Page - Drawdown for Std. Tanks
   Percent of Tank Volume  Pump Star-Up Pressure--PSI
Pump Shut-off
Pressure-PSI
 10  20  30  40  50  60  70  80
20 16.7 . . . . . . .
30 26.7 9.5 . . . . . .
40 32.7 15.5 6 . . . . .
50 36.8 19.6 10.1 4.1 . . . .
60 39.8 22.6 13.1 7.1 3 . . .
70 42.2 25 15.5 9.5 5.4 2.4 . .
80 44 26.8 17.3 11.3 7.2 4.2 1.8 .
90 45.5 28.3 18.8 12.8 8.7 5.7 3.3 1.5
100 46.7 29.5 20 14 9.9 6.9 4.5 2.7


Last updated 09/21/2004