We are getting ready to take our Fifth Wheel on our first trip. I have a water inlet that says this on it: CAUTION SEWER TANK FLUSHER Sewer tank valves must be OPEN when using this inlet. OK...
I installed one. I drain the tank, run the flusher, then close the valve and let the tank fill (I can hear when the spray head is under water because you don`t hear it hitting the side of the tank). open the valve and let it drain. very easy, but yes you do need to remember it is on!!!