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Old 04-02-2008, 11:13 AM   #1
drh
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PEX Manifolds: home-run to each fixture vs grouping runs?


Hi All,

Quick question concerning the value of a PEX manifold "home-run" system, whereby all fixtures have a separate PEX run back to the manifold vs. a non-manifold PEX layout. We're in the process of a basement renovation and debating our options.

I certainly see the value in the convenience of having a central manifold with an individual PEX run to each fixture, but I'm thinking perhaps having a smaller manifold with "grouped" PEX runs, each which individually service an area (ie: kitchen, upstairs bathroom, laundry, downstairs bath etc.) would be more cost effective. Less runs of PEX, simpler layout etc.

Curious as to how others have plumbed out their manifolds - separate run to each individual fixture vs. grouped PEX runs vs. no manifold at all?

Thanks for taking the time to read,
Dan (Canada)

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Old 04-02-2008, 12:03 PM   #2
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PEX Manifolds: home-run to each fixture vs grouping runs?


We do no manifolds, cost less, we plumb pex in like you would do with copper piping.

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Old 04-02-2008, 12:38 PM   #3
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PEX Manifolds: home-run to each fixture vs grouping runs?


Thanks for the response Ron.

My concern with having it plumbed in like copper is the potential for joints to leak behind walls along with a lack of a centralized shut-off area. What are your thoughts on a smaller manifold which branches out to zones (ie: kitchen, bath, laundry etc)?
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Old 04-02-2008, 03:44 PM   #4
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PEX Manifolds: home-run to each fixture vs grouping runs?


Never has any problems doing them the way I talked about, I have no comments on the manifold system, have not done any myself.
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