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Thread: 1/2' compression angle stop on cpvc?

  1. #1

    Default 1/2' compression angle stop on cpvc?

    anybody ever seen/done this?...went on a call yesterday about a leak behind a toilet...unfortunately it had already buckled the hardwood in an adjacent room...it was leaking from the 1/2' compression nut where it slipped on the cpvc...wasnt very tight....I removed it and installed a glued on stop...every single stop in the house was done the same way....looks like trouble waiting to happen.
    Just because you aren't paranoid doesn't mean they aren't out to get you...

  2. #2
    Plumbing Contractor TNPlumber's Avatar
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    Default Trouble

    I have seen this on several occasions. I personally would never do it because of the stress on the pipe. Where there brass inserts in the pipe such as with poly ice maker line?
    "Nothing that time and money can't fix."

    Scott

  3. #3

    Default

    nope....just the brass ferrule biting into the cpvc.....I would never ever do that

    I mean...why?....they make valves that glue to cpvc...
    Just because you aren't paranoid doesn't mean they aren't out to get you...

  4. #4
    Plumbing Contractor TNPlumber's Avatar
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    Default no wait

    I think the idea is to turn the water on quickly w/o waitng for the glue to cure. I hate to see cpvc when doing service work, in any situation.
    "Nothing that time and money can't fix."

    Scott

  5. #5
    Retired Defense Industry Engineer jadnashua's Avatar
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    Default

    I know that on PEX, to use a compression fitting, you need the sleeve inside of the pipe (they are usually SS on the ones I've seen) to make a reliable connection; otherwise, the compression can collapse the pipe or allow the valve to slide off or leak as you found. If you use one of those, I don't see much difference between copper or CPVC, and you can use the same valve, with the extra step of inserting the sleeve first.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  6. #6
    Aspiring Old Fart, EE, computer & networking geek Mikey's Avatar
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    Default

    I tour homes under construction regularly to see what the "pros" are doing. I think these luxury-home builders are hiring off the corner for everything that won't show, and spending their big bucks on covering up -- er, finishing. I see a lot of 1/2" CPVC stubouts that I know are going to be trouble down the line. Why don't they spend the extra $2 or $3 for a transition drop-ear el? Wouldn't make much of a dent in a $400K job. Oh, well, there will always jobs for a good service plumber and drywall repair guy.

  7. #7

    Default

    I would worry about the cpvc stress cracking down the road...
    Just because you aren't paranoid doesn't mean they aren't out to get you...

  8. #8
    Moderator & Master Plumber hj's Avatar
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    Default valves

    Brass compression fixture angle stops are not the highest quality valve ever made, and CPVC ones are even lower on the quality scale. How many times do you think you can cut off a glued on one and still get by with installing a new valve?

  9. #9
    DIY Senior Member Cal's Avatar
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    Default

    "Dahl" makes a GREAT cpvc 1/4 turn valve . they actually make cut-offs for all and any type or size of supply .

  10. #10

    Default

    Quote Originally Posted by hj
    Brass compression fixture angle stops are not the highest quality valve ever made, and CPVC ones are even lower on the quality scale. How many times do you think you can cut off a glued on one and still get by with installing a new valve?
    totally agree with you....the cpvc valve I installed is a brass unit with a cpvc insert that allows for glueing....plus the main valve body has a threaded connection that allows for removal....

    I don't care much for compression angle stops in general anyway.....seen too many that leaked....when I was doing new construction I used sweat under sinks and a shower ell in the wall with 1/2" chrome nipple coming out on toilets and pedestals...
    Just because you aren't paranoid doesn't mean they aren't out to get you...

  11. #11

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    Quote Originally Posted by Mikey
    I tour homes under construction regularly to see what the "pros" are doing. I think these luxury-home builders are hiring off the corner for everything that won't show, and spending their big bucks on covering up -- er, finishing.
    very true....I had no idea how shoddy the workmanship was in general until I started doing service...it's unbelievable at times...I honestly think it's a reflection on todays society ....people are more concerned about how much $ they can make in a day vs doing a job they can be proud of.
    Last edited by Racer814; 03-11-2007 at 05:49 AM.
    Just because you aren't paranoid doesn't mean they aren't out to get you...

  12. #12
    Moderator & Master Plumber hj's Avatar
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    Default stops

    I don't know how many thousands of compression stops I have installed in the past 55+ years, but the number that leaked because they were compression is in the low tens.

  13. #13

    Default

    I've came across two in the past 2 months....both caused significant damage

    but I'm pretty sure that you didnt install them
    Just because you aren't paranoid doesn't mean they aren't out to get you...

  14. #14

    Default

    Quote Originally Posted by hj
    Brass compression fixture angle stops are not the highest quality valve ever made,
    why would you install thousands of them then?
    Just because you aren't paranoid doesn't mean they aren't out to get you...

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