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Old 01-13-2016, 05:22 PM   #21
Junior Member
Join Date: Feb 2014
Location: Florida
Posts: 24
drains and vents

I leave gray valve open but always put a dip (trap) in the sewer hose to form a seal.

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Old 01-14-2016, 06:34 PM   #22
Senior Member
Join Date: Jul 2011
Location: New York
Posts: 323
Tank issues??

Originally Posted by jegstrup View Post
Maybe I'm overlooking an obvious, but why wouldn't an RV manufacturer design an RV where the gray water flushes thru the black water tank.
If the gray tank sat above the black water, you could get a much better black flush.
Please feel free to point out any obvious issues I may have overlooked.

2012 Forest River Berkshire 390FL
2013 Hyundai Veloster
There are two huge issues with your question;
1) It is against the law to ever have the chance of mixing them, i fully understand your new question (well they do it in a house) but the sanitary laws are different.
2) why not stack, this is simple (not enough room, well as you might look like there is room in a large motorhome, there for sure is not in a trailer, so all the companies just build them one way.

Sure hope this helps and Happy camping

2010 Cedar Creek Silverback 35ts
2001 GMC 2500HD w/ Allison & 8.1
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black, tank

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