Copper slip coupling. Does this look right to you?

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by deskdiver, Nov 24, 2020.

  1. deskdiver

    deskdiver New Member

    Nov 24, 2020
    So I had a plumber came out to replace a valve and adjacent pipe. After the guy’s done I held up the old section of pipe+valve and realized the new pipe is only inserted 1/4” into the slip coupling. Couldn’t stop thinking about it so I ended up taking everything out and redone the work on my own... was I right to be concerned?

    Thanks in advance!

    MASTERPLUMB777 likes this.
  2. dj2

    dj2 In the Trades

    Aug 13, 2013
    You did the right thing.
    There are two types of couplings: With stop and without stops.
    I always use couplings with stops, where the stops are at the center. This way the pipes go in half the length of the coupling each.
    Couplings without stops are used for certain situations only. Your case was not one of them.
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  4. Tuttles Revenge

    Tuttles Revenge In the Trades

    Oct 15, 2014
    The repair coupling could have been used in the correct situation , they were making some form of repair. we dont have enough information to throw the plumber under the bus for that alone.

    However, the pipe should have been inserted to the halfway point, equal on both sides. If I'm doing that style of fitting and maybe I've got to work quick, I mark the point where the fitting needs to stop somewhere that I can see.

    Without any stress on the joint it probably would have never had any issues ever.. but it should be fully inserted.
    Jeff H Young likes this.
  5. Mr tee

    Mr tee In the Trades

    May 3, 2020
    There are long CxC repair couplings which can be cut to length, if that would make things easier.
  6. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    REpair couplings do not have a center stop, but the only time you need one of those is if the pipes cannot be slid apart to insert them into the coupling. Even then, you should try to get it centered on the joint. Otherwise, you want to always slide the pipe into the center stop. There's nothing wrong with using a repair coupling, and I suppose it could save on inventory.
  7. Jeff H Young

    Jeff H Young In the Trades

    Feb 27, 2020
    agree totaly with tuttles revenge using the coupling wasent "wrong" but he might not had noticed and in advertantly didnt center it. When i use a repair coupling i mark the pipe with my tiny tim saw putting a scratch near end of coupling. also agree a good solder joint would have been fine but im not 100 percent comfortable with the fit up.
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