Tonight I'm going to replace the vanity cabinet and sink in my master bathroom but before I take it out of service I have a couple questions. Sorry that I'm not able to provide any pictures of the actual install but I'll try to explain the best way I can. The existing rough brass trap arm is soldered at the wall. I'd like to replace the rough brass p-trap but I'm not sure of the best approach. Here is a pic of what the brass p-trap looks like:

http://www.abainc.net/wp-content/uploads/2008/08/96390.jpg

Option 1:
Cut the rough brass trap arm with reciprocating saw on the wall side of the first sweep angle. Measure required trap arm length and cut new pvc trap arm to fit. Install 1-1/4 inch rubber coupling between the cut brass trap arm and the new pvc trap arm. Install pvc j-bend to the sink drain.

Option 2:
Just unscrew and replace the j-bend with new rough brass j-bend and run rough brass to the sink drain.

Tonight I'm going to replace the vanity cabinet and sink in my master bathroom but before I take it out of service I have a couple questions. Sorry that I'm not able to provide any pictures of the actual install but I'll try to explain the best way I can. The existing rough brass trap arm is soldered at the wall. I'd like to replace the rough brass p-trap but I'm not sure of the best approach. Here is a pic of what the brass p-trap looks like:

http://www.abainc.net/wp-content/uploads/2008/08/96390.jpg

Option 1:
Cut the rough brass trap arm with reciprocating saw on the wall side of the first sweep angle. Measure required trap arm length and cut new pvc trap arm to fit. Install 1-1/4 inch rubber coupling between the cut brass trap arm and the new pvc trap arm. Install pvc j-bend to the sink drain.

Option 2:
Just unscrew and replace the j-bend with new rough brass j-bend and run rough brass to the sink drain.


Door #1 is the easiest but I would use a metal shielded coupling (see image ) in place of the rubber coupling But if it were my call I'd go with door #2. It looks better and less chance of a leak. But both would work just fine. Your choice, Good luck, Tom

Where can I buy a metal shielding coupling? While I was at it I purchased a couple 1/4 turn compression angle shut-off valves and stainless steel flexible supply lines. I just figured I'd do it all since I will have it taken apart anyway. Thank you for the suggestions.


Well I completed the job last night. It wasn't bad at all. I had to reuse the shut-off valves since the ones that I bought was too small. The cold water shut-off valve has a very slow drip so I need to head to the plumbing supply and find the right shut-off valves.

Thanks for the update. Let us know if you need further assistance just whistle. Good luck, tom