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Old 05-13-2019, 11:58 AM   #2127
psicodude
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Join Date: Nov 2006
Location: Calgary
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Quote:
Originally Posted by speede5 View Post
I don't know a ton about irrigation/sprinklers, but I can tell you PEX is worse than copper for restriction. 1/2" copper maintains its inner diameter through all the fittings, whereas the brass fittings for pex drop the inner diameter to about 3/8" restricting flow. The 90's are also sharp, causing further restriction.

Most sprinklers systems create a decent demand and require the extra capacity of 3/4" line, so I would suggest you need to upsize the line.
Yeah, I didn't even consider the fittings. I will get some new lines run. Thanks.
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