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One manifold, 2 pex sizes

Wayco Wayne_2
Wayco Wayne_2 Member Posts: 2,479
would there be if I used one manifold but had 2 pex sizes? I'm doing a quik trak zone, and an overpour so sizes would be 5/16, and 1/2.

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  • Weezbo
    Weezbo Member Posts: 6,232

    i have not done the multiple size pipe off a "Factory header for some reason....

    not that it cant be done , buh ,hear me out....balancing the system would be the wrench in the works , to me. here is why, the head on the 5/16th is likely to be on the high side, the flow rate on the low side for the 1/2" .then if that was not enough to contend with, the heat loss from the two entirely different areas might be significant enough to further cluster the thinking.

    i do not own one of the fancy balancing tools that Uponor makes, with that tool, and designing the thing to a 'T' i might give it a go,..buh that is one of my Takes on doing that.

    i have made a header though that was 10 mm and 3/8th...buh thats as creative as i have gotten

    off a LLH ,now that is an entirely Nother Laval...that i have done.
  • hot_rod
    hot_rod Member Posts: 22,158
    adjust the loop lengths

    and they would get the same flow. The design should indicate the gpm per loop. As long as the manifold is supplied with enough GPM the rest is just a balance trick.

    hot rod
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • Jamie Pompetti_2
    Jamie Pompetti_2 Member Posts: 62


    I did something like this in my own home.

    The dinning room & living room has 3 Quik Trak loops and the kitchen has one multicore loop in a wetbed. The area is pretty much open to each room.

    I decided to run the kitchen off of a monoflow type arrangement that feeds the Wirsbo manifold. Did this with two tees in the supply to the manifold with a ball valve between. Took a little adjusting but works fine.


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