garyemunson wrote:
Don't make the mistake of thinking you can now leave the black valve open all the time. As said above, keep it closed and wait until at least 3/4 full before dumping.
I disagree. Due to some medical issues I have been "parked" at my son's house for 3 years and connect to his septic tank. I leave my valves open all the time. Simply make sure your use lots of water when you flush.
I also use the cheapest one ply toilet paper. I think that some of the problems people have with build up is the use of the expensive hard to dissolve toilet paper.
About ever 6 months I do use a flashlight to look down the commode to check for any build up. I have never had any build up.
Do a Google search for "rv sewer hose to pvc adapter" to connect to the PVC pipe. They make a number of different type to fit what type (threaded or glue type) of plumbing you use. I did not glue my fitting, simply a tight press fit (with some boards to support the PVC) does not leak since there is no pressure on the drain lines. This way I am able to disconnect and reconnect when I take the RV on a weekend trip.