Why No Pex For Tub Spout Drop

Pex when you pull up on the diverter the entire spout moves.

Why no pex for tub spout drop.

You need an unrestricted flow out through the tub spout. Valve to tub spout tube is. The tub spout can be copper brass or galvanized pipe. 2nd reason pex is flexible and the spout relies on the pipe for support.

Shark bite copper shark bite 90 iron pipe pex everywhere else. Any restrictions cause the water to gently back up as it waits its turn to exit the tub spout. Eventually the line reaches the shower head and one gallon of water will exit there for every 4 or 5 that comes out the tub spout. 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.

The interior diameter of pex is actually a fraction smaller than copper this forces water to come out of the shower at the same time as the tub spout. Copper keeps the spout in place. 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.

Valve drop to spout tube is within the 6 11 inch tolerance. So it s fine to have 1 2 pex going to the shower head. There is no way to secure pex adequately to keep a tub spout from flopping around.