NIBCO PC604P, Wrot Copper PEX X Press Adapter with Leak Detect, 1/2" x 1/2", Pack of 5

transition from copper to pex was easy with this compression fitting.

This has to be the most mind blowing copper fitting I have ever used. What an awesome plumbing product, I would bet my life on this adapter in a heartbeat. Maybe even my firstborn, it’s just that good.

this worked as described

These are must have fittings to have on hand. Not sold in stores

This NIBCO Press system is simply an incredible find for anyone involved in plumbing or heating. I first encountered it when searching for a solution for my new building, and I couldn't be more satisfied. The ease of installation, speed, and safety are just a few of the advantages I experienced using this system. And another important thing - it really helps save money due to its efficiency. I recommend this system to anyone looking for a reliable and efficient solution for their plumbing or heating needs. While there are a few minor improvements that could be made, the overall user experience is highly satisfying and recommended.

Zero problems with these.

I bought 4 of these fittings. I only pressed one in so far and it leaked. I tried repressing 4 times. I'm going to cut it out and try one more before going to get viega fitting or sweat adapter

The part itself is perfect. A great way to connect from copper to PEX without solder or push to connect. Great for enclosed spaces.

Surprised when I bought there was only 1 review. 1 star and no comments. I installed 2 of these fittings, no leaks on first turning on water seem to work as required.