Doesn't make sense???

[Scubawise]

Originally Posted by Homer3

If you keep the 2nd valve near the coach door open, the toilet drains toward the main valve. In my experience, if the 2nd valve remains closed, the toilet bowl will fill to the neck after a couple days of use. We normally keep the valve closed for the first two days to allow the tank chemicals to do their job.

Our trips are usually 5 nights, with 2 adults. You will need to adjust for number of people and length of stay. Please private message me if you need additional information.

2 adults ..second value closed about 4 days..good idea if close open 2nd value to gain space

[drumcorpschamp]

I owned a 2015 28Z. It did have 2 black valves.
Follow the black pipe over to the passenger side and you will find it. I assume they did that because the pipe runs under the drive shaft as it crosses under the coach.
Jerry

[Pete'sMH]

Originally Posted by drumcorpschamp

I owned a 2015 28Z. It did have 2 black valves.
Follow the black pipe over to the passenger side and you will find it. I assume they did that because the pipe runs under the drive shaft as it crosses under the coach.
Jerry

I believe they do it because the “solids” sink and if the long pipe was open to the tank they would settle there and likely result in an unpleasant clog.

[JimOIB]

Originally Posted by Pete'sMH

I believe they do it because the “solids” sink and if the long pipe was open to the tank they would settle there and likely result in an unpleasant clog.

It is probably to help prevent an accidental discharge of black tank sewage. Two valves on opposite sides of the coach may help prevent that. Black tank sewage is human waste and is toxic. In most cases it needs to be cleaned up by environmental specialists and they typically follow hazmat protocols. Talking big buck to clean up 35 gallons of black waste.

[JimOIB]

Found this from the EPA this morning. Interesting read.

https://www.epa.gov/sites/default/fi...wastewater.pdf

[Jimbo56]

There’s no nuclear waste in Ridx or happy camper! I certainly hope no one is crazy enough to try any of that other stuff on the warning list.

[EA37TS]

Do not use Calgon with some of the citrus based treatments. The two combined will turn to foam. If in doubt mix them in a disposable container before dumping down the toilet.