PEX hangers

[Susquatch]

They don't pinch the pipe so there is room to move.

I like the little pinch bumps though.

 

[YotaBota]

I like the little pinch bumps though.

Me too, I never noticed them when I ordered and they don't actually pinch the pipe just hold the pipe centered in the hanger.

 

[ChazzC]

I'd thought about the pex and it's ability to collect water in it's many bellies. I balanced out that against it's reduced ability to radiate heat which would prevent condensation, sort of.
I wanted a neat clean system, on grade for drainage to the traps, and concluded that running it inside plastic electric pipe was the best. I had 5 drops planned and wanted to have a riser off the mainline that went up and then U turn to the drop leg to prevent a surge of water. I would have to break the outer pipe run at every drop for the Tee.

I came to my senses and ran 3/4" black iron and put it on a grade of 10 inches per 40 ft. Main line run is 120 ft. I followed the plan below:

Virtually all air main distribution piping will develop condensation; the best choice is seamless pipe/tubing with a coating if it’s steel. The best system I ever had installed was Copper Tubing: 4”, 3” & 2” mains with 3/4” drips; was used for blow-off with “amplifier nozzles and dust pickups.

 

[Ironman]

Virtually all air main distribution piping will develop condensation; the best choice is seamless pipe/tubing with a coating if it’s steel. The best system I ever had installed was Copper Tubing: 4”, 3” & 2” mains with 3/4” drips; was used for blow-off with “amplifier nozzles and dust pickups.

Yes, it will. But how you deal with the collected water is the issue. Any pipe rigid enough to support its own weight over 10 ft gets my vote, that way drains can collect condensate instead of dips in the pipe. Pex doesn't cut it.