Quote:
Originally Posted by MaxwellD
You are correct Sir!. After a few days, same issue occurred. I pulled the black tank flush inlet and discovered there was no check valve in there at all - so as the tank filled partially to the level of the flush nozzle, fluid simply flowed towards the inlet and leaked out under the cover cap in the convenience center.
I have replaced it with one that has a functional check valve. So far, so good.
|
There was no check valve in the black tank flush connector as there is no need for one there (assuming you haven't modified the flush line system from what it was when constructed). The black tank flush line comes from the tank up to the anti-siphon valve (the back flow prevention device) under the bathroom sink and then down to the connector in the convenience center wall.
The black tank is located below the drop frame. The anti-siphon valve is above the height of the toilet. Black tank liquid would have to flow up around 5.5' before it could run down to the inlet connector and then *ONLY* if the anti-siphon valve has failed. There would be other significant signs of this should it happen.
It is highly unlikely the leak was from the black tank. As it has now stopped, it more likely it was a cracked valve which the replacement corrected.