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Son_of_Diablo's avatar
Son_of_Diablo
Explorer
Mar 07, 2016

Black Tank Backflush plugged at tank connection

I cannot get my black tank back flush unplugged. I have the hose feeding the tank cut about 2 feet from the connection to the tank so I could connect a water supply. It is very difficult to reach the...
Dick_B's avatar
Dick_B
Explorer
Mar 07, 2016
Seems to me that there is a check valve (backflow preventer...anti siphon) located just inside the connection. It's usually cheap plastic and get hung up easily. I had mine replaced early on. One has to get to it from the outside by cutting away the sealant and removing the inlet plate.

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