Open sewer vent pipe in cabin..Really?!!! - Escape Trailer Owners Community

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Old 08-17-2017, 12:03 AM   #1
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Open sewer vent pipe in cabin..Really?!!!

So while I was regluing my laminate counter tops I had to remove my gas burner cooktop. When I looked back inside the opening behind the cooktop opening I noticed a black ABS sewer pipe. As I looked at this I realized this was the sewer vent pipe that is connected directly the the gray water drain line.The pipe was open to the air environment in the cabin. I'm like really? This is really a hooeky design! I could not believe what I was seeing. Who would do this?
I have always wondered where the sewer off gas smell was coming from. I always keep my drain plugs in the sinks and shower closed tight so I felt for sure this was not where the gas smell was coming from. Now I know.....
Anyway I went to my local plumbing shop and for five dollars I bought a auto valve that allows air in to the drain for the vacuum break but keeps the sewer gas from coming back out of the pipe into the cabin air environment. Had to cut the pipe shorter but in five minutes I had the auto valve installed on top of the open sewer pipe.
Is this a normal design for the Escape trailers or did I just get one that the auto valve got inadvertently forgotten? Anybody know? I can't believe this is an actual designed sewer system.
If you are getting off gassing in your trailer ,pull the drawers out and you should be able to look behind them to see if you sewer pipe is vented directly into your cabin environment. EEWWWWW!!!
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Old 08-17-2017, 12:13 AM   #2
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It's definitely not an ideal design. They probably forgot to cap it during construction.
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Old 08-17-2017, 12:24 AM   #3
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Originally Posted by Robind View Post
Is this a normal design for the Escape trailers or did I just get one that the auto valve got inadvertently forgotten? Anybody know? I can't believe this is an actual designed sewer system.
Short anwser; yup. It's been thoroughly discussed previously.

ETI's counter argument is that it doesn't have to be vented to the exterior or have a cheater valve installed because they create a trap in the line to prevent tank smells from escaping from the open end.

My view is their combination of shallow angle elbows doesn't create a trap that would be recognized by a plumbing inspector.

Here's the same situation in the 19 looking upwards. You can see that the end of the uncapped pipe ends just below the closet shelf above. This area isn't normally available for viewing but I had cut out an opening for a new storage area.

So, yes, stick on a cheater valve if you smell foul tank odors.

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Old 08-17-2017, 01:02 AM   #4
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There is an open drain vent underneath the bathroom lavatory as well, at least there is in the 21.
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Old 08-17-2017, 01:13 AM   #5
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Under the best of circumstances the P trap is not a guarantee that gases will not back flow, even in a residential or commercial installation. The very nature of the travel trailer is that it is in motion. The water in the P trap sloshes around and eventually drains to the tank leaving an air break in the P trap.
Right or wrong, it's hard for me to believe that ETI, who by the way prides themselves on quality would take this short cut that can potentially spew sewer gases into the cabin.
Did I mention the auto valve cost five dollars and took five minutes to install?
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Old 08-17-2017, 01:27 AM   #6
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Under the best of circumstances the P trap is not a guarantee that gases will not back flow, even in a residential or commercial installation. The very nature of the travel trailer is that it is in motion. The water in the P trap sloshes around and eventually drains to the tank leaving an air break in the P trap.
Right or wrong, it's hard for me to believe that ETI, who by the way prides themselves on quality would take this short cut that can potentially spew sewer gases into the cabin.
Did I mention the auto valve cost five dollars and took five minutes to install?
We smelled 'something' and I was surprised to find it too. The pipe is simply 'cut off' so easy to add the 90. The breather is from marine supply, its for a boat gas tank. Here is my solution.
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Old 08-17-2017, 01:31 AM   #7
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open sewer in new 21s?

Does anyone know if there is an open vent pipe in the 2017 21s? If so where?

I have been having trouble with a disagreeable smell, this might explain it.
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Old 08-17-2017, 02:19 AM   #8
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drains closed 2

That and make sure all the drains screwed shut except when draining.
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Old 08-17-2017, 07:11 AM   #9
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I must be doing something wrong, have never smelled any gas in any of my Escapes. I leave my bath and kitchen window cracked and the MaxxFan open, sink vents open while in storage. Do those that have the issue close their unit up tight and smell it upon entering later?
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Old 08-17-2017, 07:47 AM   #10
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Originally Posted by cpaharley2008 View Post
I must be doing something wrong, have never smelled any gas in any of my Escapes. I leave my bath and kitchen window cracked and the MaxxFan open, sink vents open while in storage. Do those that have the issue close their unit up tight and smell it upon entering later?
My experience so far has been the same as Jim, never noticed any odd smells. And Teresa is super sensitive to smells, so I think she would have said something by now. And like him, ours is never completely closed up.
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