6 Lines going into shower valve...why?

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parchisi

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So I tore out the old shower today in the master bathroom. There are six pipes coming out of the concrete slab going into the shower valve. Three pipes connected to one pipe going into the hot side, and same for the cold side. I have a theory but just wondering if somebody could explain this for me. Thanks!
 

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Jamesplumbing06

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We call them jump overs in a slab. Usually multiple jump overs. (Manifolds).
copper in a slab. Lol boy that was a stupid phase we (plumbers)went through.
 

Jeff Handy

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You should add some blocking while it’s open, that whole section of wall and valve are unsupported.
 

frodo

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right here right now, over there later on.
We always brought the feed to the manifold up as the first line
the second line is the feed out o another manifold, lav is 3rd and toilet or hose bib last
we did it this way so that later we would automatically know which line was what.
also. where the pvc and copper tie in outside the house. we install a hose bib above the tie in.
 

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