PEX stubout for replumb

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by dickross, Dec 18, 2010.

  1. dickross

    dickross New Member

    Messages:
    3
    Location:
    Houston, TX
    I've got to replumb some copper lines due to pinhole leaks (cause undetermined). PEX seems Ideal, but what do I use for Stub outs to the fixtures? The all PEX stub out arrangements look like they involve big brackets nailed between studs and a lot of sheetrock work. The copper stub outs with a flange look like they require a lot less sheetrock repair, but that puts copper tube back in the system where it just failed. I don't see any other alternatives. Does anybody make a brass stubout? or maybe stainless?
  2. dlarrivee

    dlarrivee New Member

    Messages:
    1,172
    Location:
    Canada
    You must have deep pockets if you want stainless plumbing fixtures.

    The copper you have had fail on you is either very old, or you have a condition with your water that aids in corrosion. Am I right?

    I'd be fine with copper stubs personally, the copper in my house has been around for a few decades before pex even became prominent, and I see a TON of copper being used commercially still.
  3. dickross

    dickross New Member

    Messages:
    3
    Location:
    Houston, TX
    Yes the problem is certainly a water quality problem. Exactly what the problem with the water is has not been determined. maybe acidic? intermitantly? maybe some other chemical in the water. Maybe a new "improved" water treatment? Don't know and I'm not likely to get a good answer anytime soon. There are isolated areas all over the country that have been fighting pinholes for years.
  4. dlarrivee

    dlarrivee New Member

    Messages:
    1,172
    Location:
    Canada
    [​IMG]

    Never mind the blue twist plug in the end of the piping, that is their "test plug"... How about those bends though?
  5. Basement_Lurker

    Basement_Lurker One who lurks

    Messages:
    668
    Location:
    Victoria, BC
    I sure hope you aren't drinking that water straight out of the tap. Even if you use pex, the brass fittings might be susceptible as well unless you go with an all plastic uponor system. If the rest of your house is plumbed in copper, and you are just doing a small patch job, then you might consider using a thicker copper tubing than the hardware stores sell.
  6. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,825
    Location:
    Cave Creek, Arizona
    Use brass "drop ear elbows" with female pipe threads and then brass nipple and threaded stops for the fixture connections.
  7. shacko

    shacko Master Plumber-Gas Fitter

    Messages:
    561
    Location:
    Rosedale, Md
    Like (hj) said use these and add brass nipples.

    [​IMG]
  8. dickross

    dickross New Member

    Messages:
    3
    Location:
    Houston, TX
    I looked at the drop ear elbows. All I have to do is knock a 12 x 16" hole between the studs and nail in a cross 2X4 so I have something to screw them onto. Pretty much the same deal with the PRO PEX stubout bracket. I was hoping there was something available that would save some sheetrock work. I guess not.
    Thanks anyway.
  9. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,825
    Location:
    Cave Creek, Arizona
    You have two choices. Let the stubouts "float loose" or open the wall and install a "backing support". There is NO WAY to make the lines secure without putting something in the wall to secure them to. even the copper stubs with a flange require some kind of anchor.
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