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Old 10-27-2016, 09:36 AM   #1
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Adding plumbing for bar sink


We added a sink where there is no existing plumbing. I need to run hot/cold water lines and a drain. There will be nothing in wall it will all go through the floor. Any tips or suggestions on the process before I get started? I assume since its kitchen related I am going to use a 1 1/2 down pipe with a trap and just regular 1/2" lines for the water.
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Old 10-27-2016, 10:10 AM   #2
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Re: Adding plumbing for bar sink


Make sure that the drain thru the floor is not an S trap.
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Old 10-27-2016, 10:28 AM   #3
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Re: Adding plumbing for bar sink


You'll need a vent also... that can't go down thru the floor....
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Old 10-27-2016, 10:35 AM   #4
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Re: Adding plumbing for bar sink


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You'll need a vent also... that can't go down thru the floor....
Actually it can. Siamese vent.

http://www.familyhandyman.com/kitche...-sink/view-all
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Old 10-27-2016, 11:17 AM   #5
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Re: Adding plumbing for bar sink


The cabinet is 16 wide by 23 deep - so not a ton of room. I assume I need a P trap and not an S trap?

Will have to get creative with the vent.
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Old 10-27-2016, 11:24 AM   #6
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Re: Adding plumbing for bar sink


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The cabinet is 16 wide by 23 deep - so not a ton of room. I assume I need a P trap and not an S trap?

Will have to get creative with the vent.
For a bar sink I would use an AAV (Air admittance valve).
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Old 10-27-2016, 11:25 AM   #7
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Re: Adding plumbing for bar sink


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Originally Posted by dman535 View Post
The cabinet is 16 wide by 23 deep - so not a ton of room. I assume I need a P trap and not an S trap?

Will have to get creative with the vent.
Depending on TN. code, you could possibly use an auto air vent. If not then your option is the island vent rj linked to.

In most cases sinks require a 2" drain with a cleanout. The trap arm and trap will be 1.5"

Tie the drain into an existing line that is sized properly to handle the new fixture loading- minimum 2". When making this connection, use the proper fittings- wyes if done horizontal or a tee may be used in the vertical.

Also be careful drilling joists- don't want to weaken the floor
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