Originally Posted by bclemens
The Anderson valve would not do that. Should be another hose hook up on the sidewall of the coach.
Anderson Valve just sends water to the Pump, fresh tank or cold water fixtures directly.
Thank you. So the Anderson valve is independent from the black water flush? The method I have searched for online is as follows:
Black water slide valve closed.
Hook up a hose and regulator to the source.
Connect the other end to your black water flush.
Turn the water on and allow the flush to work for several minutes.
Open black water slide valve and empty.