I'm going to try my hand at PEX for my addition - pretty simple runs (1 bathroom with standard fixtures, 1 kitchen sink)
in the past where I've used copper, I've always clamped the last run of pipe (e.g. inside the wall, against the stud) close to where it exits the wall. That way the shutoff valves stay very secure (nothing flopping around under the sink once the valves are in, etc.)
starting to sketch this out and look for parts, etc. - question comes to mind - how do I do this with PEX? are there plastic clamps - and even so, wouldn't the valves still just kinda flop around loose (the PEX pipe feeding out from the wall is not really rigid like copper).
as you can see, total PEX DIY here - thanks for any advice...
I use the preformed copper stub outs that convert from pex to copper, soldered to a bracket and ended up with something below. I'm sure there are many methods...but this works well. When you're ready to put the stops on...you can use either compression or sweat...I used sweat...and didn't have any problems.
when it comes to breakfast, the chicken is dedicated, the pig is committed.