Help aligning tailpiece to trap


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Old 02-05-19, 07:36 AM
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Help aligning tailpiece to trap

I am putting in two drains in my bathroom vanity. The tailpiece is 1 " and the drain outlet is 1 ". In both drains, the trap is touching the white shelf in the vanity, so I can't lower that without cutting into my new vanity.

I had no problem aligning the first drain and it has been working well. Completed photo:


However, on the second drain, with the trap at 90, it's about 1.5" away from the tailpiece. Here's where I ended up:


Without the extension:


I'm trying to figure out how to make this work without using one of those flexible tailpieces. I am very much an amateur and got lucky with the first one, so any help is appreciated!
 
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Old 02-05-19, 08:13 AM
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#1, I'd be using an 1-1/4 trap, not 1-1/2.
Most come with an extra washer that reduces from the pipe to where it goes into the wall.
#2, If you cut the long part that goes into the wall and use an 1-1/4 45 deg. coupling it may line up.
 
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Old 02-05-19, 08:38 AM
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#1 Thanks. I can replace it. Just so I can learn, what's the reason for that?

#2 I can't quite picture what I'll be looking for with the coupling. It's a 45 elbow — one side will thread onto the wall pipe (with a compression fitting) and the other side will be threaded so that it looks like the existing wall pipe, right? Then continue as I have it now?
 
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Old 02-05-19, 10:26 AM
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Cut off the current adapter and glue on a street 45 el then a new adapter. If not enough you may instead need to use a 45 el, short length of PVC and an adapter.
 
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Old 02-05-19, 11:57 AM
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Unscrew your trap adapter from the wall pipe.

In it's place:

1st piece: https://www.homedepot.com/p/1-1-2-in...D112/100347535
2nd piece: https://www.homedepot.com/p/NIBCO-1-...D112/100677990 (male end glues to female)
3rd piece: https://www.homedepot.com/p/NIBCO-1-...D112/100347086 (male end glues to female)

Nothing wrong with using a 1 1/2" trap.
 
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Old 02-05-19, 02:42 PM
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Thanks to everyone. Sounds like replacing the trap adapter would have been my best option. However, I think it will be very difficult at this point to cut off the existing one. In the meantime, I put this rigmarole together. Everything at this point is loosely tightened. Here's the piece I used for #4 and #8.

  1. Other than being a bit complicated, is there anything wrong with this setup?
  2. If not, I'm assuming I do need a compression ring on #5 and #7 right? (There was a small plastic "lip" on the end of the curved pipe, so that's why I initially did not put on one.)

If this is a terrible idea, I'll do my best to replace the trap adapter (or have someone else do it).

 
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Old 02-05-19, 02:45 PM
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Looks like it will work. It may gurgle a little if you have a lot of water to drain because of the long arm. (#4) Yes, if those pieces already have the molded compression ring you don't need another.
 
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Old 02-05-19, 02:51 PM
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Thank you!! I could probably rotate #2 elbow toward the wall, cut pipe #4, and rotate #6 p-trap to the other side, and it would fall into place. But, as of now, things landed perfectly, so I'm a bit hesitant to mess with it too much.
 
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Old 02-05-19, 03:16 PM
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If the water drains and it doesn't leak, you did good.
 
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Old 02-12-19, 11:27 AM
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For future readers (or readers from the future), I probably would have done it opposite. I would have set the trap directly below the tailpiece, then used the 90deg (or 45deg) slip fitting from the trap to the wall.

If it's working, I agree with XSleeper, leave it as-is and don't bother changing. But usually traps like it better when the water is flowing directly into them. (Not certain if it's specifically code or not... but it's more traditionally done that way).
 
 

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