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...
it probably is in your black tank only, not grey. I primarily used mine to help flush out the last 1/4 or so of the black tank, moves the "stuff" over and down the outlet. bumpy