Bathroom Sink Drainage Issue/Questions (Photos)

narlycharley · Jan 23, 2018

Hello all!

I installed a new vanity and the new sink doesn't line up perfectly with the drain pipe in the wall (the old sink did). The swing from the P trap isn't enough to bring it to center with the drain from the sink, so I need to add a 90 to the left.

I went to Home Depot yesterday to figure out a solution and I forgot that there is already a ABS trap adapter that's glued to the pipe in the wall.

Originally, my plan was to thread a 1-1/2" coupler onto the black ABS adapter in the wall and run a 1-1/2" 90 degree elbow to the left and then out of the elbow a 1-1/2" to 1-1/4" trap adapter for the P trap assembly. This would have been perfect, but the coupler from the ABS was too large, it needs to be 1-1/4 female thread.

I was thinking I could do one of TWO things:

Get a 1-1/4" coupler (female thread to thread onto the ABS, and a smooth female on the other end for the 90 degree 1-1/2" elbow). The only issue is, I don't think they make an "increaser" (opposite of a reducer) to go from 1-1/4" back up to a 1-1/2".

OR, I can get a 1-1/4" threaded coupler to go onto the ABS body in the wall and run a 1-1/4 90 degree elbow off of that. BUT I can't seem to find a 1-1/4 to 1-1/4 trap adapter in a store (haven't looked in person, but nothing online at HD, Lowes, True Value, or Menards). They do sell them online, but I was wanting a solution for TODAY.

Ideas??

narlycharley · Jan 23, 2018

Went to HD today and found the freakin' solution. I didn't even think of a 1-1/4" to 1-1/2" adapter.

narlycharley · Jan 24, 2018

Here's the finished product. Works and looks great! Surprised that no one has commented on this thread...

CT-18 · Jan 24, 2018

That's one way to do it. Could you not have cut the old adapter off and glue an ABS 45° and then the trap adapter

TomFOhio · Jan 25, 2018

CT< it looks like he has the room to do what you said. That's better than using all those fittings. Just cut fitting off like CT-18 said. Buy a 1 1/2" street 45 degree ell and a hub trap adaptor. Then your p-trap will fit like you want.

narlycharley · Jan 25, 2018

CT-18 said:
That's one way to do it. Could you not have cut the old adapter off and glue an ABS 45° and then the trap adapter

TomFOhio said:
CT< it looks like he has the room to do what you said. That's better than using all those fittings. Just cut fitting off like CT-18 said. Buy a 1 1/2" street 45 degree ell and a hub trap adaptor. Then your p-trap will fit like you want.

Yeah, I definitely could have done it that way. I just wanted it done, and this was the easiest way to do it. I'm unfamiliar with welding ABS to PVC, so I didn't feel comfortable doing it. Plumbing is (for whatever reason) my least favorite trade to practice. Electrical is SO much easier IMO.

I think that if I would have cut the ABS fitting off and done a 45, I would have needed to add in a piece of PVC tubing, which would have been an added expense, as I don't have any on hand.

Either way, it doesn't leak and it's cosmetically fair. I needed to get something done because I did NOT want to use one of those flexible tubes, as they don't seem "correct" to me.