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mileshuff's avatar
mileshuff
Explorer
Nov 15, 2020

Best way to repair leaking PEX water line? Sharkbite?

Have a slow drip at an elbow connection. RV uses red and blue line I assume is PEX with crimp ring connections. Thinking of replacing the leaking line with a new length of PEX and using a sharkbite type connector instead of crimp. Is that a valid method rather than using a crimp tool and redoing with same crimp rings as original?

Haven't removed access panel to see how line connects to water heater but will have to redo that as well.
  • wa8yxm's avatar
    wa8yxm
    Explorer III
    If the "Slow drip" is at the elbow. could it be the elbow?
    Pex freezes well and lasts a long time but the elbow.. Well that can easily crack and the crimp may be an issue as well.

    Sharkbite is a good replacement. Make sure it FULLY engages.
  • Sharkbite or equivalent, there's other brands out there. Why waste time with the pex fittings.
  • I've had SharkBite fittings on the heating system and water system of my S&B for about 13 years, no leaks, failures or problems.
    It will be the easiest and quickest way to fix your leak.
  • mileshuff wrote:


    Haven't removed access panel to see how line connects to water heater but will have to redo that as well.


    Winnebago uses a pex elbow in that location among others such as at city water connection and faucets, with pex crimped to one leg and flexible pvc tubing crimped with a pex ring to the other leg which connects to the water heater.

    Pex fittings are not made to have pvc tubing crimped to them and that is most likely where you'll find it leaking when you open it up. PVC tubing uses clamps and barb fittings. I have never seen an elbow made which is pex on one leg and barb on the other. Cut the pex clamp off the pvc and trim it, reinstall on the pex elbow with two small band clamps. Cross your fingers and hope. It usually works and is about the best you can do as you'll not usually have enough room to do it correctly which is why they booger it together that way to begin with.


    Cheap and fast manufacturing like lots of other brands. We had the same garbage methods used on 2 Grand Designs, a Keystone, and a FR Rockwood. They all eventually dripped at those locations, just a matter of time.
  • Best way to fix your leak would be to drive it down to Gilbert, & I`ll fix it for you -- The Black Friday price is FREE -- I have a shop here & work on RV`s -- More of a hobby & it get`s me out of the house -- I retired from the RV service business, working mostly on park models -- Bill Willard --- 480-540-7377 williampwillard@gmail.com

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