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Old 01-02-2023, 05:21 AM   #9
Dave W
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Join Date: Jul 2014
Location: Upstate NY
Posts: 1,788
M.O.C. #14547
Quote:
Originally Posted by rohrmann View Post
Not all trailers use the valve. If you have a vent that exits the roof from the kitchen waste tank, you will not have a valve, as it’s not needed. You should be able to locate the valve by following the black plumbing under the sink and looking for a part that rises up from the waste line.

Not quite. Our '14 HC had a roof vent along with the anti siphon under the counter near the sink. I do agree that the anti siphon wasn't needed but RV manufacturers I've found after owning many don't always get the message.
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2014 Montana High Country 343RL (Sold!)
2011 Ford 6.7 Lariat CCLB (Went to PU Heaven)
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