Pex to tub spout.
Can i use pex for tub spout.
It is only created on tub spouts where a diverter closes off the easier path out the tub spout to send it to the shower.
Long story short it is unacceptable.
With a built in diverter you could use a pex drop eared ninety degree female adapter and a nipple but that is more trouble than it is worth.
These spouts will work with just a clean open copper pipe as it has a set screw adapter to clamp the pipe.
Soldering to the nipple with the pex attached is not optimum but can be managed if you have room to tightly wrap a water saturated cotton rag around the copper and extended over the pex portion.
When pex is used on those tub spouts the excessive back pressure sends water up the shower.
Pax has a smaller inside diameter than copper when you will turn on the spout your showerhead will also be dripping if you read the manufacture instructions it will say do not use pex for spout level 2.
Copper keeps the spout in place.
After investigating the 3 4 will work just fine no restrictions.
Copper is the only professional installation material.
The tub spout can be copper brass or galvanized pipe.
There is no way to secure pex adequately to keep a tub spout from flopping around.
2 reasons i learned.
Ironranger mn i m pretty sure what they meant was that if you use 1 2 pex you could have a restriction since it s smaller than copper.
2nd reason pex is flexible and the spout relies on the pipe for support.