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Old 10-10-12, 06:05 PM   #13
hamsterpower
Apprentice EcoRenovator
 
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I have a friend with a system like this in his warehouse space. 14 parallel loops starting and returning to manifolds on a common utillity wall. All loops start and end with valves. I can only guess that these valves allow some flow ballancing/adjustment. The manifolds are 2" copper feeding 3/4 pex. I have no idea if it adds up to a low head overall.
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