I call this the foreign object in the RV black tank situation. Sooner or later, something that should not be found in the black tank will be found there. I did not know this. I had read about it, but I had not experienced it until last week. You may think this is a particularly long and detailed post, but… Read More »
Despite the observation that almost all RVers (SWAG 96%) talk about RV black water tank flushing, and despite the observation that most RVers (SWAG 80%) think about RV black water tank flushing, I have not been able to find much evidence that more than a few RVers actually make observations, take measurements, and collect data about black tank flushing.
Our trailer is one week shy of being a year old. I took it to the dealer for a check-up. I wanted to establish an annual trailer inspection routine. I had prepared a list of deficiencies, a list of inspection items, and I had arranged for the installation of a slide topper. This was to be the first Annual Trailer Inspection.
It is quite likely that your RV is equipped with an air admittance valve. The AAV acts like a vent stack in your plumbing to provide “air after water” to allow efficient draining and to prevent siphoning of your p-trap. I was plagued with a recurring grey water odor in the cabinet under the kitchen sink of our trailer and it took me a long time to track down the culprit. It was a failed RV Air Admittance Valve (AAV).