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Thread: Pex Crimp rings or Clamp rings....Which Preferred ?

  1. #1
    DIY Junior Member Its.me.again's Avatar
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    Oct 2012
    Buffalo, NY

    Default Pex Crimp rings or Clamp rings....Which Preferred ?

    Since I am new to pex...and just a homeowner...I figured I'd ask which pex fastener is preferred.

    Do you like the solid copper Crimp rings or the stainless Clamp rings?

    Is there a time when you prefer one application over the other?

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
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    Sep 2004
    New England


    THere's a third choice - Uphonor's expansion rings. THey all work, I'm not sure there is a big difference on the crimp rings. I prefer the Uphonor's system, but it does require a more expensive tool to install (a tubing expander rather than a crimp tool). WIth this system, you insert the tool into the tubing, expand it, slip it over the fitting, then the pex (with the reinforcement ring) collapse over the fitting. Pex has memory and I like the fact it makes the seal on its own rather than relying on it being compressed. But, done right, they all work. By expanding the tubing, there's less restriction at the fitting, too.

    Pex is made in one of three methods, and designated as -A, -B, or -C. -A is the most flexible and the only one that can have a kink repaired. -B and -C types require you to cut out the kink and insert a fitting. Plus, -A bends to a smaller radius, often requiring fewer fittings.
    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
    Join Date
    Aug 2004
    Cave Creek, Arizona


    I use both, on the few occassions when I use PEX. The clamp/cinch rings are convenient because the same tool does them all without changing "dies".
    Licensed residential and commercial plumber

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