Black water flush leaks

[djpierce]

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.

[Hansom-Man]

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.

http://www.airforums.com/forums/f44/...ire-70481.html

Good luck.