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Old 08-22-2010, 12:46 PM   #1
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Gray Water Odor

In our 2010 Adventurer 37F we have a gray water odor in the rear bathroom. This smell is nasty in the bedroom area. Investigation revealed that the gray water vent is located inside the bathroom vanity. Is there any way to overcome this smell, re-pipe the vent or close off the vent?
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Old 08-22-2010, 12:52 PM   #2
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I suspect that vent is for the vanity only. The tank should vent out on the roof. You may want to invest in one of the many products designed to create a negative pressure in the tank, thus always pulling odors up and out the roof vent. Search - sewer vent - Camping World
This link will take you to a couple offered by camping world. There are other that will use a small solar powered fan.
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Old 08-22-2010, 01:12 PM   #3
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I found that if my tanks are full when dumping, it sucks the shower drain empty. My Grandaughter though Grandma died in the back.I always pour water in the sinks and drains after dumping.
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Old 08-22-2010, 01:50 PM   #4
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Replace the vent cap under the vanity. Could be a bad one.
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Old 08-23-2010, 07:40 AM   #5
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That "vent" under the sink is a vacuum breaker. There is normally one under the galley sink also. It allows air into the tank when you dump the tanks so the water won't be sucked out of the traps as someone else mentioned. If it is stuck shut, the water can be sucked out of the traps, and you will get odor. If it is not closing properly you will get odor. It is easy to unscrew it and take a look at it. Some have a simple rubber flap setup, and some have a spring mechanism.
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Old 08-23-2010, 10:13 AM   #6
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Quote:
Originally Posted by a k View Post
I found that if my tanks are full when dumping, it sucks the shower drain empty. My Grandaughter though Grandma died in the back.I always pour water in the sinks and drains after dumping.
Please explain who died. I don't follow your comment.
Thanks
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Old 08-23-2010, 10:22 AM   #7
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Suction to pull the water out of the P-Traps is due to bad check or auto air vents or roof vents.
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