I was always under the assumption that there is some kind of water pressure activated spinning spray mechanism built in the tank to flush the tank? But maybe I’m overthinking it?
I believe you are correct,,,my thinking is based on belief the gray tanks & black tanks are connection flow controlled to avoid, if possible, getting black waste into gray tanks,,,but OK to have gray water mix w black to help clean out those tanks & discharge hoses,,,have never had a built in black tank scrubber able to clean gray water tanks unless
a “ flush master”, after market style exterior fitting is used & then, in my opinion, you “ rinse “ the respective tanks separately using the tank valves to isolate which tank is cleaned. This approach is what leads me reason as I …. We don’t use this valve but several of the more experienced members have referenced them,,,flush master is my recall description,,,May have different proper valve name,,,
New edit: Alliancerv.com offers a lot of Owner empowerment videos on our systems as well as some nifty tech tips & Wed. Training tips. Another good resource is you tube rv videos google subject & May have explanation of how the multi tank black tank flush works.
Here is an excerpt I found w a quick query how the black tank flush system works w 2 black tanks,,,,FYI,,,“A black RV tank flush system with two black tanks typically works by using dedicated water inlets for each tank, or a selector valve, to spray water inside, rinsing debris while the drain valve is open. You must flush each tank separately, using a clear elbow connector to verify the water runs clear.”
Been living in trailers for years & have always tried to keep it simple,,,I know the process I noted works,,,am sure more informed folks than I also have “their way” that may differ but work for them & perhaps they have a better understanding of function to further help,,,👍🌞🍀,,,Enjoy your adventures,,,travel safe,,,& minor issues !
New edit #02 Shreck: Found my 382RK tank layout,,,Vin specific from Alliance may help where your tanks are,,,👍🍀!
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