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Old 05-17-2020, 02:50 PM   #1
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Tank Vent Covers

I am considering changing my gray and black tank stock roof vent caps to the shark fin type. I have a 2019 Hurricane and the black tank smells very quickly, like 2-3 days after being flushed. I end up flushing the tank 2 times per week.
I would think the stock vent cover does not help the situation where the shark fin would create that negative pressure to keep it from allowing an air flow up the toilet when flushing.
Has anyone changed these out? How difficult was it and did it help?
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Old 05-17-2020, 03:08 PM   #2
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I put them on my Outlaw: easy-peasey!
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Old 05-17-2020, 03:24 PM   #3
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turn off the vent fan when you flush the toilet. Use chemical Oder pacs after each flush. Check to see if you have an air admittance valve under the bath room sink. If so, It may be stuck open. stock pipe vent covers work just fine.

https://www.amazon.com/Master-Plumbe...%2C188&sr=8-16

https://www.campingworld.com/camco-t...E&gclsrc=aw.ds
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Old 05-17-2020, 03:36 PM   #4
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Quote:
Originally Posted by cavie View Post
turn off the vent fan when you flush the toilet. Check to see if you have an air admittance valve under the bath room sink. If so, It may be stuck open. stock pipe vent covers work just fine.

https://www.amazon.com/Master-Plumbe...%2C188&sr=8-16
The stock vents work ok provided the knucklehead at the factory didn't cut the vent stack too tall only leaving about a 1/4" between the cap & the pipe that you don't find until you're replacing the stock vent.
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Old 05-17-2020, 04:31 PM   #5
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Follow Up Question

Are the stock caps glued on so they have to be cut off?
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Old 05-17-2020, 04:45 PM   #6
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Tank vent causing smells

Gentlmen, I very much appreciate your input. Our 2014 Palazzo has 3 of these vents on top. So how do I determine which one is the

problem vent ???


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Old 05-17-2020, 05:14 PM   #7
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Shark vents are the best. Completely resolved any smell issue for us!!
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Old 05-17-2020, 05:17 PM   #8
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Wilson,


You put 3 shark fins on ???? One on each stack.
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Old 05-17-2020, 06:41 PM   #9
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Capt
I only have two vents an yes for both
Ive found those little flat ven caps allow little air circulation. The sharks seem to suck out the vents
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Old 05-17-2020, 07:15 PM   #10
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By adding them to your RV: you will be perfectly prepared for Shark Week...
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Old 05-17-2020, 07:50 PM   #11
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Are the stock caps glued on so they have to be cut off?
Not glued on. They are screwed/glued to the roof with roof coating over them.
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Old 05-17-2020, 09:29 PM   #12
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If I remember correctly: the Shark Vents attach to the vent pipe.
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Old 05-17-2020, 10:53 PM   #13
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If I remember correctly: the Shark Vents attach to the vent pipe.
They do, below the flange.

I've installed these on my current RV and the previous RV. They certainly help with the smell. You definitely need to check you AAVs as well. I don't ever remember having smell problems until they started using these AAVs in RVs. They just don't seal as well as they should. RVs without AAVs rarely had smell problems.
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Old 05-18-2020, 04:34 AM   #14
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2nd Reply

I have no issue with the gray tank, itís the black tank that smells. But I would put shark fins on both while I was up there.
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Old 05-18-2020, 11:37 AM   #15
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Originally Posted by Fordste View Post
I have no issue with the gray tank, itís the black tank that smells. But I would put shark fins on both while I was up there.
Yuo! It looks WAYYY cooler!

https://www.thorforums.com/forums/at...1&d=1589801841
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Old 05-23-2020, 09:01 PM   #16
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Quote:
Originally Posted by Fordste View Post
I am considering changing my gray and black tank stock roof vent caps to the shark fin type. I have a 2019 Hurricane and the black tank smells very quickly, like 2-3 days after being flushed. I end up flushing the tank 2 times per week.
I would think the stock vent cover does not help the situation where the shark fin would create that negative pressure to keep it from allowing an air flow up the toilet when flushing.
Has anyone changed these out? How difficult was it and did it help?
Well, coincedentally, I just did this today! Shark Vent to replace the cap, which I don't think worked that well as I seemed to get some smells in the coach. I just did the black water tank, but maybe I need to do the gray water vent as well.
It was a little tricky getting the old vent off, and I used some of that new Flex Seal when installing the new vent. Flex Seal was easy to use, but doesn't fill gaps... too thin. I didn't use the "paste", just the liquid style.
Anybody have any experience with the Flex Seal, or is its use just too early to judge?!
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Old 05-23-2020, 09:07 PM   #17
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I think that the Flex Paste might work better...
It looks a lot thicker.
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Old 05-23-2020, 09:25 PM   #18
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Remove Flex anything and use Eterabond tape.
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Old 05-23-2020, 11:14 PM   #19
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Shark vents

Will sharks protect me from zombies
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Old 05-23-2020, 11:34 PM   #20
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You betcha!
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