Quote:
Originally Posted by nothermark
One of the many things that are not cast in stone is where the bathroom sink(s) drain into.
Probably the easiest way to find out is to run the water for a few minutes and see what tank level increases. One can also empty both tanks then close one and run water for a few minutes. If water is coming out of the open valve that is the tank. If not open the other one and see if there is a small flood into the drain.
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Yes, I keep forgetting that RV's are like snowflakes.
Do the suggested test outlined above on YOUR coach then you will know exactly what tanks are being used for what waste.
My coach is plumbed such that the toilet is the only supplier to the BLACK tank other than the black tank flush water nozzle. The kitchen sink, two vanity sinks and combo W/D all go into the grey tank.
Bottom-line, manufacturers did not have a "master-plan" or use common sense when plumbing. It was whatever was more convenient for the installation tech that day.
Dr4Film ----- Richard