The problem is if the black tank is overfilled in your drawing it will overflow into the gray water tank before it starts to show up in the toilet bowl.
Rv gray water tank overflow.
There are three tanks in an rv.
Water should not be coming out from under the belly.
This is best to do before you hit the road.
This is also great for cleaning your sensors.
Driving will cause the soapy solution to slosh against the tank walls and eliminate buildup.
We basically are moving water from the fresh water tank bypassing the grey water and transferring it to the black water which does not normally get filled.
Some rvs might lack the grey tank the black tank contain all the dirty water from the.
There is no drain on the grey tank except the drain valve.
The last one is the black water tank.
The first one is a freshwater tank that stores fresh water.
Ideally you should keep the valve closed and allow the tank to fill up before dumping it.
You should dump your rv grey water holding tank for rv when it s full.
The vent may not be sealed on top of the tank.
Rv grey water tank overflow.
If all else fails i have a small six gallon tote n store that i picked up from amazon that i drain the gray water into if need be.
You need to redraw your diagram and show the gray tank vent connecting higher on the vent stack.
This now saves us on fresh water for not having to flush.
Remember if you re connected to a line and the washer and dryer are on you ll want to keep the grey water tank valve open or you may get water bubbling out of your drains.
The second is a grey water tank that holds dirty water from your kitchen sink and shower.
When it is full the shower will quit draining as you found out.
In this video we show you what happens when you forget to open the gray tank before draining the bath tub a flood in the rv.
You show the black and gray tanks sharing the same vent stack.
We still love our bathtub tho.
Not sure how you would access it to check.
Fill your gray tank at least 1 2 full of water then add your cleaner of choice.
It holds dirty water from your toilet.