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Thread: PEX: Is it that easy?

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  1. #1
    Renovating Footman_75's Avatar
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    Default PEX: Is it that easy?

    Hi folks,

    Just did my first PEX installation. It was a fast process. Each crimp passed the go/no go test, and the water is back on with no leaks.

    I'm still a bit leery that this method actually works. Waiting for the day when a tube pops off the barbs and my house floods at 65 gpm....

    QUESTIONS:

    1) Are there any signs I should look for that reveal a bad crimp (not including the go/no go)?
    2) Do crimps ever start off as water-tight and then eventually come loose? Or, is a crimp either good or bad, meaning a good crimp is and stays water tight, and a bad crimp leaks immediately. (Hope this makes sense)

    Note: I'm using crimp rite crimp rings.

    Thanks again and kind regards,
    Footman

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
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    If you insert the tubing properly on the barbed fitting, and the crimp ring is applied in the proper location; if it passes the go, no-go test, it's not going anywhere. Well, maybe if you had a couple hundred pounds of pressure, but that would never happen in a domestic, residential setting and the tubing would likely go before the tubing came off the fitting. There are billions of feet of pex installed over the world...installed properly, it works.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  3. #3
    Moderator & Master Plumber hj's Avatar
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    Yes, it IS that easy. Why do you think plumbing companies like it? They do not have to hire "professional" tradesmen since all they need is one person to "layout" the tubing and then any "knucklehead" can crimp the joints closed. And, since many install it like spaghetti, it takes a lot less time to do it, since neatness doesn't count.
    Licensed residential and commercial plumber

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    Renovating Footman_75's Avatar
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    HJ, I've only posted a handful of times here, and you've replied to pretty much all of them. Always appreciate your comments.

    And sarcasm.

    Cheers
    "Knucklehead"

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    Moderator & Master Plumber hj's Avatar
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    Reality is NOT sarcasm, and what I posted also applied to the polybutylene installations in the 70s and 80s, and we know how those went.
    Licensed residential and commercial plumber

  6. #6
    Retired Defense Industry Engineer jadnashua's Avatar
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    Quote Originally Posted by hj View Post
    Reality is NOT sarcasm, and what I posted also applied to the polybutylene installations in the 70s and 80s, and we know how those went.
    Since pex has been in use around the world way before that pipe came about...if there were going to be widespread problems, I think they would have shown up by now. Not all pex manufacturers make a great product, I'd want to pick one from a company that has been doing it for awhile as there are lessons to be learned. Personally, I like pex-A, but -B, and -C (they're manufacturing techniques that produce slightly different pex properties) are less expensive, and if made properly, work, too. pex-A has the smallest bend before it kinks, and is the only one that can recover from a kink. The others require you to cut out the kink and install a fitting (at least if you follow the manufacturer's instructions!).
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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    Renovating Footman_75's Avatar
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    Jim, Thanks. This is my seventh bathroom reno. In my ten years of upgrading and maintaining apartments, I've always used solder....until now.

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