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do you have a sink in a kitchen island?


do you have a sink in a kitchen island?

Old 06-06-2015, 09:09 AM
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Default do you have a sink in a kitchen island?

how is it vented
- with some type air admittance valve (seems they would clog up or fail over time)

or does the "vent" plumbing go up from the sink tailpiece up under the working surface then come down and tie into the water drain? a high loop

Last edited by edwardh1; 06-06-2015 at 09:32 AM.
Old 06-06-2015, 09:14 AM
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mines like this
Old 06-06-2015, 09:16 AM
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Usually a one-way air valve, commonly called a Studor vent. They can fail and allow sewer gas into your living space. I just bought one for my RV at Lowes, about $25. Don't buy the cheap one for $10.
Old 06-06-2015, 09:18 AM
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Old 06-06-2015, 03:25 PM
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Yep. Studor vent.
Old 06-06-2015, 03:41 PM
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Correct! I've remodeled several kitchens, cut the floor and found the soil line and supplies, and used a Studor.
Old 06-06-2015, 04:06 PM
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loop it
Old 06-06-2015, 04:08 PM
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In some places AAV are not legal (if you care about that sort of thing)... IMHO, I'd loop AND AAV it. But that's just me.
Old 06-07-2015, 07:18 PM
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Mechanical vents like those shown above are illegal in some states (like here in Massachusetts) so check the code. A bow vent is typically used in this case, and needs approval from the town inspector.

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