Forum Discussion
Bobbo
Apr 29, 2019Explorer III
My OEM tank flush has a backflow preventer valve built in. I bought a 3' long green hose and put a backflow preventer on each end. I put the 3' long green hose on the tank flush, then use the drinking water hose to the spigot. I figure that 3 backflow preventer valves in-line should do the trick.
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