Factory black tank flusher
Went down and emptied my Black tank. Hooked up the water hose to the Black tank flusher. Water hose went hard and water under pressure squirted from every fitting. Turned off the water and check the drain hose and there was no fluid in the low spot. Did a quick check and no air would go in a diafram would close and block the inlet. However when suction was put on it it flowed freely. What gives?
Yes the Black tank flush valve was open at all times during the above.
I'd rather be boon docking in the desert.
WBCCI 6731 FCU