Cleanout question...

Old 07-22-14, 11:33 AM
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Cleanout question...

Greetings from a new member!
I have seen other threads/questions/Google etc regarding this but would hope to get the experts here to offer advice...

My garage has a clothes washer that drains into a 1 1/2" pipe that angles up about 40" up from the floor. At 12" above the floor just about 6" over from the washer drain pipe is a 1 1/2" brass plug that I "assume" is/was a clean out but I do not know if the previous owner had a utility sink there. That fitting feels like a sanitary tee if I stick a finger in there...and yes, that is the essence of my question: can I connect a utility sink drain to that 1 1/2" fitting in the wall? All drains, fittings etc are behind paneling over sheetrock that I would hope not to have to open up.

I would guess if the washer drain backs up the sink will back up also since the drain for the sink is lower than the washer drain pipe.

Many thanks in advance,

Old 07-23-14, 03:19 AM
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Lol im in the same boat as this guy. Dont want to hijack your thread but ill add onto it i guess. Im in a similar situation, my house was rebuilt about 2 years ago. They didnt add a laundry sink and i want to add one in as its much needed. I have the high drain where the washer is and off to the left and about 24 inches off the ground there is a cleanout. I want to put a sink there as well, is it something i can add on without trouble or will i have to tear apart the whole wall to see how its routed?
Old 07-23-14, 06:52 PM
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For both of you, a picture would make it a lot easier to see what you have.

For a laundry sink (or any sink for that matter), you should have a wye to drop into the drain line, not a sanitary tee. It also needs to continue upwards to a vent or AAV so the sink trap doesn't get sucked dry every time the laundry runs.

Also, nowadays, a 2" drain is required for a washer standpipe, with the high efficiency washers, the extra volume is often required. You may not have to upgrade your drain, but it might be a good chance to do it.

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