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Old 01-17-2015, 05:42 PM   #1
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Barroom sink drain question


The sink drain is not long enough for the p-trap to line up with drain line in the wall.

2 Choices

1. Extend the drain

2. Route the p-trap so it drops down to the drain pipe

I prefer the second solution because it give me more space under the sink.

What is the preferred solution?
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Old 01-17-2015, 06:25 PM   #2
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Best solution ? Either raise the drain for more cabinet space or use an extension to lower the trap

Do not create an S-trap to raise the drain--
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Old 01-17-2015, 07:16 PM   #3
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I perfer to see what you have...
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Old 01-17-2015, 09:57 PM   #4
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You can offset the tailpiece before the trap, but the outlet of the trap can not offset vertically.
So, either a tailpiece extension or raise the tee
Another possible option is an offset tailpiece that is used for wheelchair access, but not practible with a pop up drain.
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Old 01-18-2015, 12:01 AM   #5
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I just noticed the pic I tried to post from my phone didn't post.
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Old 01-18-2015, 06:08 AM   #6
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Ok....here is the pic

(sorry for the delay...it was one of those nights)

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Old 01-18-2015, 06:09 AM   #7
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Quote:
Originally Posted by oh'mike View Post
Best solution ? Either raise the drain for more cabinet space or use an extension to lower the trap

Do not create an S-trap to raise the drain--
But I have to wonder.....as soon as the line enters the wall, it goes down. In terms of physics....what is the difference?
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Old 01-18-2015, 07:04 AM   #8
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The vent inside the wall allows the water to flow in the drain pipe----

An S-trap---uses the sink as a vent---and can possibly suck out the water from the P-trap

Common enough problem on a high volume vessel like a bath tub or kitchen sink--not to likely in a small bar sink.
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Old 01-18-2015, 07:09 AM   #9
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simple ..just get a tail peice extension....your done...
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Old 01-18-2015, 07:53 AM   #10
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To easily understand the theory---get a length of clear plastic tubing--fill with water and stopper the end with your finger.

bend a P-trap shape and remove your finger---water will remain in the tube at the trap.

Next fill it and repeat with the S-trap shape---it will empty completely if the output end is lower than the bottom of the P-trap.

I only added this because I know you like the
"WHY" as well as the "HOW"
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Old 01-18-2015, 08:48 AM   #11
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Quote:
Originally Posted by ddawg16 View Post
The sink drain is not long enough for the p-trap to line up with drain line in the wall.

2 Choices

1. Extend the drain

2. Route the p-trap so it drops down to the drain pipe

I prefer the second solution because it give me more space under the sink.

What is the preferred solution?
In order to get more room, you will need to configure the tailpiece like the image- only using ABS.
Use a trap adpt to connect to the sinks tailpiece, Then use a solvent weld 90 back to the wall where you can then 90 down to your trap.
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Old 01-18-2015, 10:19 AM   #12
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a 22 0r 45 a short piece of pipe and tubular extension you're done.
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Old 01-18-2015, 10:50 AM   #13
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its not worth the time or amount of room you will gain....to do all the messing around IMO....extend the tail peice hook up the trap ..relax and have a beer football is on
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Old 01-18-2015, 11:03 PM   #14
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Thanks for the input guys.

This is what I did today.....



And....I have determined that I am in fact OCD.

It's killing me the drain extension is white and not black.

And this is the sink....prior to granite....

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Old 01-19-2015, 06:50 AM   #15
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perfecto painless as well but you get a F for mixing pvc and abs
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