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rwpjr · Mar 18, 2013, 12:29 PM

Under my bathroom sink, I'm trying to reconnect the drain extension (1 1/4") to the iron nipple (1 1/4"). The problem is that the iron nipple is crushed and corroded so badly that it's impossible to thread anything onto it.

So the way the original plumbing was done with a piece of 1" PVC glued into the 1 1/4" drain extension, then the other end of the 1" was just pushed inside of the nipple and glued to where it dumped water down into the 90°. (Since it isn't high pressure, just drain)

I was advised that the plumber probably did this because he didn't want to pull off the nipple due to the fact that the 90° is probably just as corroded. And if the nipple were taken out, I may not be able to get another nipple into that existing 90°, forcing me to open up the wall to replace the 90°. Does this sound correct?

So now I am considering just gluing a piece of 1 " PVC into the drain extension the way they had done, covering it in pipe glue and sticking the other end inside the nipple. Will this hold for a while? Should I use a different type of epoxy other than PVC glue?

Thanks a lot.

dlpnlvr · Mar 18, 2013, 02:01 PM

Seeing how it's only a bathroom vanity drain and no pressure, have you considered CLAMPING them together with a pipe clamp that consists of a rubber sleeve and 2 metal worm clamps that you use a nut driver or screwdriver to tighten the clamps around the rubber sleeve after it is installed on to the 2 current pipes.
Rubber pipe clamps come in various sizes and can be picked up at numerous Home Improvement stores like Home Depot, Lowe's, Ace Hardware etc. (See attached pictures for reference and what to look for)

rwpjr · Mar 18, 2013, 02:12 PM

Thanks for your response dlp. I had considered doing that but wasn't sure if I could tighten one of those clamps down enough to seal off any leaking water, without cracking the pvc pipe under the pressure of the clamp. Should I just butt the 1 1/4" tail piece up to the 1 1/4" nipple and throw a clamp on it? Or should I still use a reducer with 1" pvc going inside of the nipple before I clamp? Thanks again.

mygirlsdad77 · Mar 18, 2013, 04:24 PM

Can you post a pic of your setup under the sink? Kind of sounds like a cobbled up mess. I have a feeling a rubber fernco adapter clamp (as pictured above) will come into play sooner or later to make this at least somewhat right.

massplumber2008 · Mar 18, 2013, 04:49 PM

Yeah, as much as I hate these rubber ferncos, they are better than glueing/cementing pipes together in the manner mentioned!

Post a pic. as requested by MGD77... ;)

Mark

ma0641 · Mar 18, 2013, 05:46 PM

I have had to work on the older brass traps that were soldered in. I was faced with the same circumstance a couple of months ago. Rather than cutting open the wall, I made a stub out of pvc, used a good grade of epoxy on the pvc, wrapped the joint with metal tape, epoxyed over the joint and then used a trap adapter. I would have used a fernco but the pedestal sink trap arm and stub left no room. Been that way for 6 months and is still perfect.

massplumber2008 · Mar 18, 2013, 05:52 PM

As a licensed plumber I can't agree with Ma0641, but I understand what he is presenting!

Best option, it sounds, is to open up the wall (as much as this stinks) and make all connections proper!

Otherwise, try the fernco.. if that doesn't work,only thing I can suggest is opening the wall up... best result is here!

Mark