[DJDD]

I am replacing a galvanized pipe which has rusted out badly. This pipe connects to another galvanized pipe in the wall which seems to be a vent pipe as well. Where the rusted pipe sat has destroyed the threads in a 3/4" spot, thus causing my new PVC fitting to leak as well. I used plumber's tape to get a good seal but apparently it didn't do the job. What else can I do short of removing a good chunk of my kitchen cabinets and wall the replace this T fitting in the wall?


Cause of the problem.


The problem.

[Just Bill]

It is pretty common for the nipple threads to rust off, but usually the wall elbow is OK. Try multiple wraps of teflon tape and pipe dope, that may work. But I suspect you will need to replace the elbow. And no, it is not a simple job.