Plumbing water leak

[Susie410]

We are of course camping currently and have developed a leak on the cold water line next to the bypass valve. It doesn’t leak all the time but obviously we will need to repair it when we get home. This spring when be de-winterized that particular bypass valve was a devil to open and we uses bolt blaster to loosen it. We use the infamous zip tie which has slowed it down to it leaking only when we use cold water. We leave for 2 weeks for Acadia and New England so we’ll have to move on this asap when we get home tomorrow. Hubs says it’s at the tee above the bypass valve leading into the hot water tank. Everything else is sound. Is here anything out there that resembles a Union that could be used if the tee was cut out and replaced that will attach th the existing pipes? In residential plumbing shark bites work great, but we’re not sure they make anything for RV size piping. Thanks in advance! You guys have always given great advice and suggestions that work!

[Kipkeller]

Pex has been standard in most trailers for several years. Same as in your house. Should be 1/2” and push-on type fittings can be used.

[vtron]

It's probably all Pex plumbing. Get yourself a cheap crimp tool on Amazon and some crimp rings. If the bypass valve was stuck, get a new one as well. You probably want a 3 way crimp valve.