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Old 11-17-2011, 08:47 AM   #1
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Installing double sink and disposal.


I am installing a double sink in my basement and one side will have a badger disposal. I have a question about the best way to plumb this. In my upstairs kitchen (house built in '06) they have the other sink draining into the waste line of the disposal then a p-trap. The second pic is how they have it plumbed in my kitchen, which I think would be wrong. The third is how I plan on plumbing, but the bad part is that the badger has a down tube coming out of the disposal and it isn't a straight shot to the other sink. Will this matter?

The First picture is an option with A p-trap for both sinks.

Also, for my dishwasher do I need a air gap or can I just high loop it?

How should I do it?

Thanks.


ps.

I have decided to use compression fittings for my valves. Thanks for the info in my previous post regarding the fittings.
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Old 11-17-2011, 08:10 PM   #2
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Installing double sink and disposal.


Nothing?

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Old 11-18-2011, 12:01 AM   #3
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Installing double sink and disposal.


In oregon, we plumb them as shown in option B, and the airgap is not needed.

Not really sure what kentucky is all about, though.
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Old 11-18-2011, 08:21 AM   #4
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Installing double sink and disposal.


Thanks for the info!
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Old 11-18-2011, 09:08 AM   #5
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Installing double sink and disposal.


Now I see 3 pictures. There were only 2 showing up last night.

We plumb them as shown in the last image.

Sometimes we have to do them as option B when something moves after sheetrock and they don't want to open the wall.

Option A would be illegal here.
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Old 11-18-2011, 09:11 AM   #6
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Installing double sink and disposal.


What if the garbage disposal is closer to the waste line, do you still plumb it that way?
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Old 11-18-2011, 09:15 AM   #7
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Installing double sink and disposal.


if G/D is closer to the waste line then we go with option B.

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