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Thread: PEX stubout for replumb

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  1. #1
    DIY Junior Member dickross's Avatar
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    Default PEX stubout for replumb

    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?

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    DIY Senior Member dlarrivee's Avatar
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    Quote Originally Posted by dickross View Post
    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?
    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.

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    DIY Junior Member dickross's Avatar
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    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.

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    DIY Senior Member dlarrivee's Avatar
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    Never mind the blue twist plug in the end of the piping, that is their "test plug"... How about those bends though?

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    One who lurks Basement_Lurker's Avatar
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    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.
    Broken promises don't upset me. I just think, why did they believe me? -Jack Handy


    www.blackbirdkitchenandbath.com

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    Moderator & Master Plumber hj's Avatar
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    Use brass "drop ear elbows" with female pipe threads and then brass nipple and threaded stops for the fixture connections.

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