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Old 07-21-2010, 04:02 PM   #11
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Re: Sewer Vent Cap

Kinda looks like a mushroom on the roof, right over the bath. It vents gases from the black tank, admits oxygen for aerobic sewage breakdown and maintenance of the trap water seals (P traps on your sinks) which prevent gases from entering the camper. It also provides equilization of the air pressure in the system so liquids (waste) flow where they're supposed to go.
Everyone has them on your roof at home too, but they don't usually have the mushroom style cap, just an open pipe. Sometimes called a "stink pipe"

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'11 Nissan Frontier Crew Cab (5' bed) 09 Escape 5.0
Blacksburg, Virginia (Home of the Virginia Tech Hokies)
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Old 07-22-2010, 10:11 AM   #12
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Re: Sewer Vent Cap

I went home and looked and there it was. Not small. I have washed my roof. Why did it never enter my consciousness? (Don't answer that.)

It must tie in to both waste tanks? If it didn't tie in to the grey tank, sinks would not drain?

Ron Stewart
Tsawwassen, BC

2009 17' Plan B
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Old 07-22-2010, 12:06 PM   #13
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Re: Sewer Vent Cap

The grey tank vent is on the side of our 17B beside the door. It's a small white grill.

Paul S.
2012 Escape 19'
2013 F350 crewcab 4x4
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Old 07-22-2010, 12:15 PM   #14
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Location: Barneveld, Wisconsin
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Re: Sewer Vent Cap

That makes sense! I always wondered what that small white grill is all about! :
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Old 08-13-2010, 07:39 AM   #15
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Re: Sewer Vent Cap

Hi: All...Finally broke the base for the sewer vent cap!!! I hit it with the wash mop and blew a hole in it. Looks like just the right size for wasps to buzz in for nesting so I gotta at least put a piece of "Duck Tape" over it...for now. Red Green will be happy. Alf
escape artist N.S. of Lake Erie

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'10 Frontier CC. S.E. 4X4 Lng. Bed V6 '14 Escape 5.0TA
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