1/2" vs. 3/8" water supply question.

Discussion in 'Shower & Bathtub Forum & Blog' started by stockwatchn, Aug 13, 2008.

  1. stockwatchn

    stockwatchn New Member

    Joined:
    Jul 19, 2008
    Hi,
    Ripped out all the old rusty galvanized pipes and replaced them with a Pex manifold and 1/2 " tubing. The question is can I run the 1/2 right to each of my sinks, showers and toilets or do I need to reduce the flow to 3/8" Can I reduce it right at the appliance with a 1/2 to 3/8 connection?
    Thanks
    sw
     
    stockwatchn, Aug 13, 2008
    #1
  2. Terry

    Terry Administrator Staff Member

    Joined:
    Aug 17, 2004
    Occupation:
    Plumber
    Location:
    Bothell, Washington
    You can run 1/2" to them.
    They make fittings for that.
     
    Terry, Aug 13, 2008
    #2
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  4. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    You can put a compression stop valve on the pex - the OD is the same as copper pipe. You need a reinforcement ferrule, which is packaged with a valve, or available in bulk if you get one packaged for copper. To make things more 'robust', it's nice to use a copper stubout for the valve. These can be anchored in the wall and provide good support for the shutoffs.
     
    jadnashua, Aug 14, 2008
    #3
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