Soft or hard copper and Type M is ok it has to be L or K for bathtub pluming

[Curiousv]

What type of copper is required for plumbing related to bathtub valve ..i.e shower head and bathtub spout pipes?

also any comments about propress(viega) or press-fit (nibco) - do they last?
What about O-rings - won't they fail?

@Terry @Reach4 @Tuttles Revenge @Afjes @hj @Sylvan

 

[Tuttles Revenge]

I know that pro-press is rated to be installed on all grades of tubing that is rated for potable water: Type M, L and K. We only install press fittings now and use Type L for all of our installations.

Every piece of a plumbing system will fail eventually. Copper tube and fittings will wear out. Will the rubber o-ring seal that is compressed between the fitting and the copper fail before the copper? Dunno.

Here is a cross section of a propress fitting I removed from a project.

 

[Sponsor]

 

[McconnellPlumbing]

In Oklahoma type M (thin wall) is only code approve for above the slab/accessible purposes. Most plumbers use type L throughout a house if they use copper at all. K copper is usually spec'd for commercial jobs.

 

[Curiousv]

I know that pro-press is rated to be installed on all grades of tubing that is rated for potable water: Type M, L and K. We only install press fittings now and use Type L for all of our installations.

Every piece of a plumbing system will fail eventually. Copper tube and fittings will wear out. Will the rubber o-ring seal that is compressed between the fitting and the copper fail before the copper? Dunno.

Here is a cross section of a propress fitting I removed from a project.

Ok thanks...someone said you can not use pex between valve and shower head ..is this true ? I thought u cant use between valve and tub spout ..I did not know between valve and shower head

 

[John Gayewski]

No pex for the spout. The shower head is fine.

K copper underground

L commercial and residential above ground

M residential only only above ground only accessible

Pro press the contents of the pipe do not contact the o ring. The o ring is a secondary seal.

 

[Reach4]

Requiring K or L depends on local regulations. There are places that don't allow M for pressure piping. Others are fine with it.

I don't think that IPC or UPC specify this, but I easily could be mistaken.

 

[John Gayewski]

Requiring K or L depends on local regulations. There are places that don't allow M for pressure piping. Others are fine with it.

I don't think that IPC or UPC specify this, but I easily could be mistaken.

Is specified by upc