I bought a new sink faucet in my bathroom not knowing that the accompanying drain tube is 1-1/4". My old was 1-1/2". I went ahead & bought a new P-trap that is 1-1/4". The drain/waste tube through the wall is 1-1/2" still... how can I make the transition from 1-1/4" to 1-1/2" and where do I make this at OR can I use a new 1-1/4" drain/waste tube and not worry about any transition? If that's the case, what do I use to absorb the xtra space around it where the 1-1/2" tube use to be and still be code compliant?

Thanks,
Mark

P.s. forgot to mention... I moved my new vanity away from the side wall about 1 foot. I left the plumbing in place, however, when the P trap comes to join the drain/waste tube through the wall it is off about 4-6"...any thoughts on how to "close the gap"? Flex?

Keep the 1 1/2 trap . Most new 1 1/2 traps come with two seals one for 1 1/2" and one for 1 1/4". May be able to use the seal that came with the 1 1/4" trap. If not, return the 1 1/4" trap and purchase the proper seal, only a few pennies.

Keep the 1 1/2 trap . Most new 1 1/2 traps come with two seals one for 1 1/2" and one for 1 1/4". May be able to use the seal that came with the 1 1/4" trap. If not, return the 1 1/4" trap and purchase the proper seal, only a few pennies.


Thanks. I have the two seals... because I had to shift the new vanity over about a foot, the trap & the drain tube don't align - off about 4".....any suggestions on how to "bridge" these two pipes together?

Hi Harold and Mark1

They make a flexible/corrugated plastic extension tube... couple different lengths, but I don't think these will work for you as that 4" to 6" offset may simply be too much distance to "bridge" within the vertical distance between sink tube and p-trap. Never hurts to give it a quick check though... huh?

What kind of pipe is this.. My guess is it is chrome plated p-trap that is soldered onto copper (look under flange to see this) or a chrome plated p-trap that is screwed onto galvanized pipe? Either one can be difficult to work with. If either of these, you may end up cutting the p-trap out and connecting onto the pipe using a shielded clamp or fernco coupling (see pic.) to transition to new PVC pipe/fittings.

If PVC (white plastic) or ABS pipe (black plastic), then I would have you cut out the p-trap, and install a 45 degree fitting lined up to sink tube and install new trap and 1 1/2" x 1 1/4" desanco fitting (in ABS or PVC).

Let us know what type pipe/trap. Let us know what you think..

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