Black water tank flush
I seem to get water leaking into my tt while flushing my black water. It comes out of the check valve under the sink. What am I doing wrong? Maybe I turn the pressure on too high? The drain valve/plun...
Forum Discussion
BB_TX wrote:
You are not doing anything wrong. Those anti siphon/back flow preventer valves are common failure items. Time to replace it.
Removing the valve is an option. But you need to use an external back flow prevention valve if you do to prevent the unlikely, but possible, backflow of water into the fresh water source.
Thanks for the reply. I thought this hose goes only to the black water tank. How is it possible to get into the fresh water source? Figured it was a connection to a hose with a check valve as a safety feature in the event you forget to open the black water drain valve that goes directly to the black tank.
