Running New Kitchen Drain Because 1953 Wasn't Friendly With Connection Height - Plumbing - DIY Home Improvement | DIYChatroom

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Old 01-31-2017, 10:32 PM   #16
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Re: Running new kitchen drain because 1953 wasn't friendly with connection height

You got a project there for sure. I still say your best option from a plumbers view is to lower the tee and repipe the kitchen line. This would keep your kitchen vent and fix the leak. But I understand where your at. My wife has asthma and sometimes I overwhelm her with demo dust with my projects...

Second option IMO is to go with the AAV. But I'd keep the kitchen line and vent in place and cap the sink branch at the existing tee only. If the shower is 2" tie the new sink line into that. 2" is large enough for a sink and shower. It's already plastic and will make the tie in easier
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Old 02-03-2017, 11:57 AM   #17
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Re: Running new kitchen drain because 1953 wasn't friendly with connection height

Didn't get the reply email strange. If I ran a new line I would leave the kitchen vent in place but put a rubber cap on the end that is cut under the house and then a plug in the T to keep anything from getting in/under the house from the roof vent. The kitchen vent isn't connected to anything else as the bathroom has it's own vent.

Can the AAV be placed higher then the base of the sink so if there is a backup it starts in the sink vs coming out of the AAV all over the cabinet?

Where would be the best place to adapt to the 1 1/2 from the 2" in the cabinet space under the sink or just before it enters the sub floor into the cabinet void?

I think that is really the only other questions I had. Well 2 45s or a sweeping 90 for the change the void cabinet space to under the sink?
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