I was in the process of removing a compression shutoff valve that was on the CPVC stubout. The pipe was so deeply strangled I had to use a Dremel to slice the brass ferrule open and in the process I sliced into the pipe.



I need to convert the CPVC to copper using the Sioux Chief 643 CPVC to copper adapter.

[www.siouxchief.com]

The question is, will this damaged CPVC end still able to create a solid and sound solvent welded joint? The length of the stubout is 1-1/8", and I need to put on an escutcheon still.

Hi Sum, the pic isn't showing. I had a similar question doing some DWV work recently with some old SCH 40 that was scarred on the outside. I figured the solvent weld would fill in the grooves, but I had several folks advise me not to do it. I'm told that most of the time the solvent weld will NOT fill in the grooves or defects in the pipe and the joint will leak. Counterintuitive for me and not sure if CPVC is different. I wound up buying new pipe because this project is already behind schedule and didn't want to test the theory.

Seems to me that the damaged section can be cut off and there will be enough pipe left for the CPVC joint, if you use a flat flange.

george, the problem is if I were to cut off the damaged end, there is not enough room for a shallow flange plus the connection (because I am attaching to it a CPVC x copper spigot adapter so I will never have to deal with a strangled CPVC non-removable ferrule ever again).

I think what I will do is to cut it off, then solvent weld on that adapter without a flange, there is enough room, than use a deep cone shaped 1/2" CTS flange to cover the connection, than the new compression valve on the copper.

So I cut the CPVC pipe shorter to get rid of the bad cut I made.

I solvent welded the CPVC x copper adapter on, followed by a deep cone escutcheon, than the 1/2" compression shutoff valve. Worked fine no leak.

Looks beautiful