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Old 08-11-2010, 06:49 PM
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txgrassguy txgrassguy is offline
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Join Date: Jan 2007
Location: south enough that spanish is necessary
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I have never heard of a minimum fps require to scour gunk from a pipe.

Now, gunk from my ex's trunk - that requires a whole hell of a lot more than 2 fps.

Personally, if all you are working with is 13 gpm, I'd stay with SDR 21 1" pipe for everything, lateral and main and design/install to the lowest sustained volume and pressure. The safest bet is to assume the worst and install for it.
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