Black tank flush - valves always open?
The label next to the inlet for our black tank flush says that the drain should always be open for flushing. Why is this? Is this really a concern, or is this just there to make sure somebody doesn'...
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We can always imagine "ifs", but as it pertains to the black tank, I think the "ifs" are very unlikely. If you to not use cement in the connections of the black pipe (ABS), it will still hold water. Not easy to assemble without the cement, so I think it is really unlikely the shoddiest RV builder would assembly without it.
As for the "geyser", I have been there and done that once when I first got my current TC. My TC only has a 12-gallon black tank. It does not take long to fill it with a hose.
I have also overfilled my gray tank. At least two times, all was well, but after being on the road, I saw signs of gray water in the shower pan. Eventually, I found the "P"trap in the shower served as an overflow when I went around a corner. The only solution was to not let it get too full.
Wayne
As for the "geyser", I have been there and done that once when I first got my current TC. My TC only has a 12-gallon black tank. It does not take long to fill it with a hose.
I have also overfilled my gray tank. At least two times, all was well, but after being on the road, I saw signs of gray water in the shower pan. Eventually, I found the "P"trap in the shower served as an overflow when I went around a corner. The only solution was to not let it get too full.
Wayne
