Just bought first fifth wheel, Just above the purge valves there's an inlet valve for a hose(threaded) that says "sewer flush". Am I correct in assuming that I should hook a hose there when dumping bl...
I turn on the hose to help flush the black tank while draining it. After it is all drained, I then close the black tank valve and let the flush hose run for a couple of minutes and then open the valve again. This help clean any sewer matter at the bottom of the tank. DO NOT turn the flush hose on while the black tank valve is closed and walk off to do another job!!!!! or you could potentially end up with an overflowing toilet:(:(:(:(