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Old 01/09/2008, 12:52 PM   #4
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Join Date: Nov 1999
Location: Nampa, ID
Posts: 5,870
The difference will be related to the velocity of the water flowing in the pipe. If the keep the velocity low, but using larger pipe, the better sweeping L, will not make a noticeable difference in flow. Now if for some reason you can't use larger piping and have a very high pressure pump, the quality of the fittings will make a very noticable difference in flow.

But for our normal pumps, just up size your plumbing one or 2 sizes and you can put the whole pipe together out of street ells and use no straight pipe and get more flow than undersized piping with great sweeping curves and a limited number of fittings total.


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