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Unread 06-21-2003, 09:46 AM   #13
bigben2k
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Join Date: May 2002
Location: Texas, U.S.A.
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Just for kicks, I ran the calcs, for a straight section of 1/4" ID pipe (which is slightly different from reality):

Pressure drop @ 1 gpm: 3.3 feet aka 39 inches aka 1 meter
Pressure drop @ 2 gpm: 12 feet aka 143 inches aka 3.6 meter
Pressure drop @ 3 gpm: 25.3 feet aka 303 inches aka 7.72 meter

In actuality, the ID should be slightly bigger, but the calc doesn't account for the bends.

Calcs done using Hazen-Williams formulae (should have used Darcy, I know).
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