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Old 03-12-2015, 10:57 PM   #11
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Default Re: Vent caps - pros cons

My Airstream Interstate came with the 360 Siphon vent caps. They keep stuff out and extract fumes when driving or with any wind when parked.

https://360productsnorthamerica.com/site/
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Old 03-13-2015, 01:39 AM   #12
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Default Re: Vent caps - pros cons

I installed http://www.campingworld.com/shopping...ar-white/35183 as suggested in the thread I started. There was a little lip I had not found in my first two investigations that I was able to bite in to. So far, so good.
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Old 03-13-2015, 12:23 PM   #13
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Default Re: Vent caps - pros cons

I've got the same vent caps as mentioned in the previous post. I've never given it much thought, but I am now. I wonder if the air restriction caused by certain caps could make dumping the tanks slower? If air can't get into the grey tank fast enough, I guess it could pull the water out of the P traps. As for the black tank, the only way air can get in is through the vent.

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Old 03-13-2015, 01:03 PM   #14
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Default Re: Vent caps - pros cons

Are both the gray and black tanks connected to the one roof vent on a Roadtrek?
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Old 03-13-2015, 06:40 PM   #15
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Default Re: Vent caps - pros cons

Quote:
Originally Posted by peteco
Are both the gray and black tanks connected to the one roof vent on a Roadtrek?
No, not on a 200 at least. There is one for the grey tank on the driver's side and one for the black tank on the passenger side.

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Old 03-13-2015, 07:03 PM   #16
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Default Re: Vent caps - pros cons

On the Chevies, 190, they are connected to one vent.
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