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Old 09-07-2021, 03:21 AM   #1
snowmanfx4
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Bathroom sink smell

We have two sinks in the front bathroom. Always have a bad smell coming out of the drains. Have to leave the plug in them. There are not pee traps in the drain pipe. There is a waterless trap in the drain line on the. Dont know if it is working or not. This is a new camper.

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Old 09-07-2021, 05:34 AM   #2
RMcNeal
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This sounds like a HepVo valve. They can be removed and cleaned but they have a fragile membrane that is very easily destroyed so use caution if you try to clean it.
https://hepvo.com/
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Old 09-07-2021, 08:38 AM   #3
twindman
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Originally Posted by RMcNeal View Post
This sounds like a HepVo valve. They can be removed and cleaned but they have a fragile membrane that is very easily destroyed so use caution if you try to clean it.
https://hepvo.com/

Also, an FYI for you. My current or previous rig (can't remember which) had the sink drain into the BLACK tank!!! not the gray tank. I could see the PVC pipe under the bathroom from the pass thru area! Nice job Keystone!
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Old 09-07-2021, 08:48 AM   #4
Carl n Susan
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It helps us if you add a Signature for your Post that lists the year and model of your RV.
One cause of the smell in the sink is this (not sure how old your rig is). If you are plumbed for a washer/dryer in the area near your sink and you don't have one, the water in those lines can become skanky and will feedback to the sink. You just need to attach a hose to the water lines and flush them into the drain or wherever. .
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Old 09-07-2021, 11:45 AM   #5
snowmanfx4
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Thank you. I don't know how to add all the info at the bottom. 2021 3931fb
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Old 09-07-2021, 02:47 PM   #6
Daryles
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If you have enough room under the sink, replace the HEPVO valve with a regular U trap.
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Old 09-07-2021, 05:39 PM   #7
rames14
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As Carl said, if your unit has washer and dryer prep, drain those lines (hot and cold) and see if that water is bad. Water gets caught in those lines and stagnates.
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Old 09-07-2021, 07:10 PM   #8
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Originally Posted by snowmanfx4 View Post
Thank you. I don't know how to add all the info at the bottom. 2021 3931fb
upper left of home screen - User CP. Click this. Then down on left is Edit Signature. This is where you can add stuff like my maps and unit info
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Old 09-08-2021, 10:11 AM   #9
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Use hydrogen peroxide.
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