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Old 09-22-2013, 01:21 PM   #1
2 Rivet Member
2005 19' International CCD
Belmont , California
Join Date: Aug 2013
Posts: 20
Black water flush leaks

Well I did a black water dump and then hooked up a garden hose to the black water flush hose bib, turned it on and all I heard was water spraying and it was all draining onto the ground. I do not think any water went into the black water tank. I looked inside under the bathroom sink and I see what looks like an anti siphon valve but nothing on it to open/close. There was also a little bit of spray in there. I assume it leaked inside because of all the pressure backed up from nothing going into the black tank. Am I missing something in this process? The manual mentions the vacuum break and check valve. I assume that is what I think is the anti siphon valve? Could this valve be messed up? Does not look easy to take apart. Connections look like some sort of pressed on clamps.

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Old 09-22-2013, 03:02 PM   #2
3 Rivet Member
Hansom-Man's Avatar
2009 23' FB Flying Cloud
The Woodlands , Texas
Join Date: Jun 2010
Posts: 131
Had a similar problem with the valve that I believe you are referencing. See the photos in the thread mentioned below. It's was relatively easy fix as ours
had threaded connections. It was a bit hard to reach. I think I've used it like once since it's been fixed since there are other easier alternatives as are mentioned in the thread.

Good luck.
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