PEX branch for bathroom vs. individual lines off main branch

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by EthylOH, Apr 17, 2016.

  1. EthylOH

    EthylOH Member

    Dec 23, 2015
    North Andover, Massachusetts
    Hi all,

    I'm about to run the PEX for my bathroom. I'm adapting from 1/2" copper main to a 3/4" PEX line.

    Will it make any difference if I run a branch off the main for my bathroom versus individual line off the main for each fixture?

    If I run a branch, I can get away with one set of shut-off valves for the whole bathroom (shower, tub, toilet, sink).

    I've added a pic to show what I mean.

    Thanks in advance.

    Attached Files:

    Last edited by a moderator: Apr 18, 2016
  2. Reach4

    Reach4 Well-Known Member

    Sep 25, 2013
    Individual uses more length pipe and may be more work. Many run a "manifold" with many outputs, and many of those manifolds have individual shut-off valves for each tap.

    Individual will get hot water to come out of the shower sooner because the line has less cooled water to displace.

    For shutoffs, you want a shutoff right at the toilet and normally for the lavatory faucets, even if you have individual shutoffs
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