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Cyclone Vent Cover

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exps01

Active member
Hi, everyone.

We were watching some youtube and noticed a few folks with a different vent cover on their roof sewer pipes. It apparently spins and utilizes wind to suck the gases from the black tank out to help reduce odors in the coach. Was curious if anyone had these and what your thoughts were on them.

Here's a link to a Camco one I found on amazon: Camco Cyclone Sewer Vent Cover
 
Will’nShan

Will’nShan

Member
We’ve had good experiences with this product on previous RVs. However I wonder sometimes if we didn’t inadvertently fix an issue we were unaware of by installing them? 🤔
 
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Lantley

Prominent Member
I have used the cyclone sewer vent cover successfully on a prior RV. However the real issue was my OEM vent came off leaving me with no vent cover and smells in my RV.
Installed a cyclone and smells went away. A standard OEM vent may have also resolved my issue.
At the time it was easier to just install a Cyclone cover vs. obtaining a OEM vent cover.
Nevertheless the Cyclone resolved my smell issue.
 
George

George

Well-known member
I've always had a question about these things. They claim to draw out the smelly air from the black tank. Where does the fresh air come from to replace the smelly air. "Nature abhors a vacuum." The Camco diagram shows it coming from the toilet but that'd only work while flushing. 🤷🏼‍♂️
The only thing I can figure is that there is a leak in the system letting out the smelly air. Putting this vent on could "band-aid" the problem by keeping a vacuum on the system.
 
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exps01

Active member
Geo said:
I've always had a question about these things. They claim to draw out the smelly air from the black tank. Where does the fresh air come from to replace the smelly air. "Nature abhors a vacuum." The Camco diagram shows it coming from the toilet but that'd only work while flushing. 🤷🏼‍♂️
The only thing I can figure is that there is a leak in the system letting out the smelly air. Putting this vent on could "band-aid" the problem by keeping a vacuum on the system.
Click to expand...
Interesting point. They seem popular and well reviewed on amazon, etc. Maybe the use of the toilet admits enough air to offset? I'd think if there was some other point of entry for air to get into the tank, there'd be more issues related to smells across the industry. Or maybe it doesn't quite do that much, but enough for the "lighter than air" smelly gases to get removed. I say this with absolutely minimal education or training on fluid/air dynamics :LOL:
 
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exps01

Active member
Well found this comment on etrailer for the Camco Cyclone:

The fin that runs through the horizontal opening allows air to be pulled out while allowing air to return back to the tank enough that it's still effective. The amount of air needed to move out of the tank for this to be effective is not a high enough volume that you'd need a return vent as well. Source: https://www.etrailer.com/question-367075.html

I guess it also flows some air into the tank as well.
 
Midnight Rider

Midnight Rider

Prominent Member
I have had both types of toppers on the sewer gas pipe. I can’t tell a difference, but both vents never gave me any trouble, so who is to say?
one key is to have it installed properly in the first place, then your not chasing a problem?
 
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