Originally Posted by thommassey
Good job on the Tanks, I like that... just wondering though, is it possible to vent the tanks somewhere under the bus so a person would not have an additional roof penetration?
I would think it would be possible. I am not sure if they make vents that will vent until the water level reaches them and then shuts off so it doesn't allow waste water to escape or not. That was my concern. I do not have any monitoring levels on the tanks. I don't plan to fill them completely before emptying them but in the case where they did become full I would rather have it begin backing up in the shower (as that is the lowest point) rather than dumping on the ground. By running the vent out the roof there is no worries of any waste water leaking from the tanks.
Now that I think about it with separate black and grey holding tanks connected together by the vents, if the grey water became full, which typically happens before black, it would actually begin transferring to the black tank rather than backing up in the shower via the vent. hmm.