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Post by HeavyDuty on Sept 21, 2021 7:31:37 GMT -5
I have a double sink in the kitchen. When both sides are unstoppered, they drain fairly well. When the left side is stoppered the right doesn’t change much, but when the right is stoppered the left drains very slowly.
The left drain line connects to the right, and then through the gooseneck to the wall. It’s not the most direct routing for anything.
I’m thinking it’s a venting issue. Any other ideas that I can run down on my own? I know I can easily add an under sink vent, but I’m wondering if I should redo the drain line in a more balanced and direct arrangement with solvent weld PVC instead of the current screw together stuff (that I hate.)
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Post by Larry Madsen on Sept 21, 2021 9:48:55 GMT -5
This is how mine is set up after my little kitchen refurbish under the sink. The overall project is finally nearing completion. I went to all ABS. That one little extension is PVC, but it's all plastic. It all works great. My house being 50 years old and with the main drain lines being cast iron, I do need to snake things out occasionally. Edited to add: If the main vent for the fixture (inside the wall and up through the roof) is clear and free, it should be all you need. DSC_2674 by Larry Madsen, on Flickr
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Post by Opie on Sept 21, 2021 11:24:28 GMT -5
Sounds like a venting issue for sure. Climb up on the roof and pull out whatever bird or squirrel you find in the vent.
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Post by RufusTeleStrat on Sept 21, 2021 14:28:12 GMT -5
It certainly sounds like a vent issue as when you plug the drain the alternative vent in this case is the other drain allowing the vent action. SO without that open it does not want to drain. Ergo vent in wall to ceiling most likely has something in it.
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michael
Wholenote
Recent Retiree
Posts: 620
Age: old enough to know better and not care
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Post by michael on Sept 21, 2021 19:17:50 GMT -5
plumbing baffles me... i was friends with our school district's head of maintenance and he told me once that all i had to know to be a plumber was water runs down hill and what that was i smelled. i STILL don't get it... it acts completely different than i think it should... but anyway, i'll insert me 2 cents
we have a double sink in the kitchen and a couple of years ago it acted similar to your description. we had a MAJOR clog between the sink and the vent, so i think the sink was venting itself.
does that sound credible?
i had used my plumbers snake, poured a bunch of cleaner into the drain and couldn't unclog it. had to call in the pros. guys found it in 10 minutes and had it cleared in 20 more. cost me $75
guess i paid for what they knew instead of what they did... $150 an hour is pretty pricey in this neck of the woods...
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Post by HeavyDuty on Sept 21, 2021 19:47:57 GMT -5
Hmmm. This is a townhome style condo, so I’m not sure what is mine and what is the association’s when it comes to exterior vents. I have no way to access the roof, but maybe I can put my drone up and take a peek.
I’ll let y’all know what I find.
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Post by roly on Sept 22, 2021 1:33:12 GMT -5
I vote vent.....something is constipated.
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