02-10-2015, 01:50 PM
0
(02-09-2015, 08:02 PM)twisteroo Wrote: Isn't that what I said? I want more volume.
But you won't get more volume than your outside supply is sending regardless of line size.
You'll just get the same volume at a lower pressure.
This is for fire hoses but the formula works for any hose or piping. The omly thing you would need to look up is the friction loss coefficient for the pipes.
http://fireengineeriq.com/Friction%20Loss.htm
Civil engineers use this same formula for water and sewer lines ranging from 4 inches up to 16 feet!
Interesting bit of water trivia: Water not boosted by a pump will develop a pressure of 1/2 PSI to a dead end per foot of elevation regardless of the size of the supply line.
If the supply source is let's say 200 feet above the dead end of the supply line you would have 100 PSI pressure simply due to the elevation. You could have a 1/4" line or a 12" line but the pressure would be the same. HERE is where the larger line would supply more volume than the smaller line. If you took off the dead end cap the bigger line would flow more water but without the cap sealing it there would be less pressure than if you did it to a smaller line.
Clear as mud?













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