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Old 03-12-2015, 02:55 PM   #1
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Default Vent caps - pros cons

From another thread...
What are the pros and cons of having a vent cap? I ask because my older model didn't come with one, and I'm not sure or haven't noticed whether newer motorhomes are factory equipped. I've considered adding one but it's never been a priority. I'm sure we've discussed it before but I can't recall the nature of the discussion.
Just curious what others think.
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Old 03-12-2015, 03:11 PM   #2
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Default Re: Vent caps - pros cons

The second photo in this topic http://www.classbforum.com/phpBB2/vi...hp?f=12&t=3574 shows the screen Booster put on the vent.

We do talk about this from time to time. A cover or screen would keep debris out. The chance of a branch or small pine cone landing in the vent hole is likely slim but odd things like that happen. I've had little branches and small pine cones hit the roof at some campsites.

If the debris is small enough to enter the hole it could pass right through to the tank and later exit when you empty the tanks. The vent plumbing in my van has two bends that could cause debris to get caught.

Only a small amount of rain would find its way to the tank via the vent.

Here's another topic about it: http://www.classbforum.com/phpBB2/vi...php?f=9&t=3446
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Old 03-12-2015, 03:26 PM   #3
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Default Re: Vent caps - pros cons

I think what put us over the edge on putting on the screen was our last trip's "acorn adventures". Quite a few of the dents we got on the hood are no more than 3-4 inches apart, so it saw pretty full coverage, I think, and that was only for two days parked under the trees that did the damage. Odds would say that we would eventually get something down the vent. That said, when I did the drain work this winter, I didn't find any acorns.

As it turned out, the new water heater we got for the house came with vent and inlet screens that we didn't need and the size of the mesh was just about right. Anything the screen would let by should make it through the pump. I don't think screens would have any of the airflow issues that folks mention about other caps.

Needed? Maybe, but so easy to do, why not
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Old 03-12-2015, 04:39 PM   #4
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Default Re: Vent caps - pros cons

I think I will add a screen. Though the probability is low, it is not worth the risk of having something go down the vent and damage the macerator.

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Old 03-12-2015, 06:58 PM   #5
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Default Re: Vent caps - pros cons

Booster, You probably bring up the most valid point about a vent cover and screens in regard to hard objects (acorns) and macerators since every macerator company warns about putting such in waste tanks. It would probably be a much lesser issue with a gravity dump system.
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Old 03-12-2015, 07:09 PM   #6
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Default Re: Vent caps - pros cons

Interesting comments. I guess a screen of some sort can't hurt based on the suggestion of ease of installation. To keep acorns, meteorites, wayward drones, and such out. We're still liquids only, gravity dumpers, but what the heck?
Thanks to all.
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Old 03-12-2015, 09:15 PM   #7
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Default Re: Vent caps - pros cons

I just hate it when meteors and drones rain on the RV
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Old 03-12-2015, 10:08 PM   #8
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Default Re: Vent caps - pros cons

Yes to that.
BTW, they make bird poop screens now, too. They're called "solar panels".
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Old 03-12-2015, 10:45 PM   #9
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Default Re: Vent caps - pros cons

Geeee-I wonder if maybe it was aliens in drones bombing us with acorns.....

Solar panels are great poop screens, they keep the paint you can't see very poop-free.
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Old 03-12-2015, 11:04 PM   #10
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Default Re: Vent caps - pros cons

Eeeeyoowwwzah!!!!
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