Kitchen Drain - New undermount sink installed


Old 01-13-10, 02:11 PM
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Kitchen Drain - New undermount sink installed

Hi everyone,

I had a new counter installed along with the undermount sink. The new drain hardware which came with the sink will not work with the current plumbing in place b/c the piping is too close to the botton portion of the sink. I have a pic of the new sink installed along with the hardware.

I'm wondering what hardware and parts I can buy to make this work without redoing all of the current plumbing?

Thank You,
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Old 01-13-10, 06:35 PM
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From what I can see you have to cut the horizontal pipe a few inches to the left of the clamp & buy a rubber coupling with clamps to connect the new drain on the left.

On the right, cut the vertical part of the trap as low as you need to connect the tail pipe.
Old 01-14-10, 01:40 PM
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Where's the new hardware?, what is that piece of pex installed in the drain?, something doesn't look right!
Old 01-14-10, 05:15 PM
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You need somewheres around 3 inches from the bottom of the sink to the top of the waste arms (that would be length of the sink basket and shorty tailpiece combined) to make it work in a standard application. Did they put the new countertop to the right height by using 1 x 4 furring boards across the cabinet first? Is the finish height of the counter up 36 inches off the floor?
Old 01-14-10, 07:20 PM
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That piece of red tubing going into the drain line is for his reverse osmosis water filter.


You'll regret having a glued together ABS drain under the sink. If it clogs, there is no way to take it apart to clean it! I would install either PVC or brass drain lines the bottom of the sink baskets to a threaded fitting in the ABS coming out of the wall.
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