Polybutylene replacement with PEX - Can this be a DIY project?
Originally Posted by rjniles
You can also use Sharkbite couplings for this. Sharkbites are not rated for PB but they work (and are reusable) and you will only be using them temporarily.
SharkBite actually does have a fitting for transition from PB to copper/ CPVC/ PEX. They have two different colored ends. Make sure you're inserting the PB end into the GRAY side. The standard SharkBite coupling doesn't have an thick enough insert that's strong enough to support the PB pipe. Definitely keep a few of these on hand for your transitions, even if they're temporary.