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View Full Version : Black tank rinse, back-flow preventer


Notanlines
02-12-2021, 10:05 AM
Any kind soul happen to know the location of the back-flow preventer on the black tank rinse, 2017 38RSSA?
When trying to use the rinse, the water leaks out along the bathroom vanity and also just inside the basement hatch on the driver's side.
Aren't water leaks just the pits!!
No, it is not located in the vanity or behind the drawers associated with it. Nor is it located behind the wood panel where the shower controls are located.

wingnut60
02-13-2021, 10:22 PM
Jim, if not where you mention, then don't know. Always been behind the shower wall at the control area on mine. Clue--it has to be higher than any other water pipe level.

Notanlines
02-14-2021, 05:07 AM
Joe, that was the first place I looked! I'm stumped....
I'm going to go back and look the re again and will keep the forum un to date when I do find it.

Notanlines
02-14-2021, 07:37 AM
After reading my previous post I wish that this forum had an 'edit' feature like most modern forums so I could fix my typo's. Back to business...
Thanks, Joe, for that little post. It was just enough to push me to get out the snake camera and look harder. Yep, it was hidden right where we knew it was all along, just out of site in the corner. I'm enclosing a picture and wondering why it is looking so fandangled. Way more complicated than our other RV's.

wingnut60
02-20-2021, 09:58 PM
Any sign of a leak?

Cummins12V98
02-21-2021, 12:41 PM
I removed my leaking POS's

https://i.imgur.com/gSFAGG1l.jpg

Notanlines
02-21-2021, 05:18 PM
Yes, and of course I have to cut a larger hole to get to them. I'm going to go Cummins route and bypass the darn things.

Cummins12V98
02-22-2021, 11:05 AM
Yes, and of course I have to cut a larger hole to get to them. I'm going to go Cummins route and bypass the darn things.

Surprised no one has given me chit for doing this. I do have a valve that keeps them isolated.

If I sell the RV I will inform the new owner and they can decide to leave as is or return to OE.

I used the spray hose to feed my tank washouts. I would like to take credit but someone else came up with this idea. Awesome as I don't have to connect a separate water line to do the tank flush.

https://i.imgur.com/nw2AtBdl.jpg