Part 1 of this overall plumbing project is where I installed a freshwater port in place of the garage black tank flush inlet on the camp/passenger side of the rig. Here's a link if you want to read more about it:
https://www.jaycoowners.com/forums/f...de-100364.html
As a Part 2 to my plumbing modification, I've added a diverter valve to the wet bay to switch between my main black tank flush and the garage black tank flush.
I started by figuring out where the valve would fit best in the wet bay. Once I determined a good location, I drilled holes for the mounting screws and a center hole with a 3/4" hole saw to accommodate the stem. I then fed a PEX line from the wet bay, above the BMPro brain to the rear wall of the main storage area. I basically followed the existing plumbing lines that feed the kitchen. I then fed another PEX line in through the hole that leads to the kitchen cabinets. Again, tracing the existing lines toward the sink. Once under the sink area, I added an elbow and a 13" vertical piece with a female connector. This allowed me to tie into the anti-siphon valve that I had capped earlier during Part 1.
Back at the panel, I added elbows to the valve and made up a "U" shaped section of PEX to run from the black tank flush inlet to my newly installed diverter valve. I then connected the black tank lines to the other open fittings on the diverter valve.
I realize that I've added some complication and increased the number of leak points. Since this line will only be pressurized while flushing, I'm not too concerned as I monitor what is going on at all times while flushing. I have, however, reduced the complication in my mind by having only one black tank flush inlet location. Add to that the freshwater port that I have on the camp side of the rig and I'm pretty happy with myself.
I don't know of any RVs out there that simplify the hookup process where multiple black tank flushes are fed by a single connection. In my mind, I feel like this would make a sensible factory set-up. I understand, however, that using a readily available Nautilus panel is the cheap and easy way to go. Developing one specifically to include a black tank diverter would make sense though. Especially given the number of rigs out there with multiple black tanks.
This is the diverter valve that I bought for the project. It was the cheapest solution I could find. I would stay away from the valves that have barbed fittings included. Even those that are made for PEX. With the spaghetti of hoses, pipes and wires that are behind the panel, I don't know how you'd ever get the connections made without removing the hole Nautilus panel. I may go back and paint the valve handle black just to identify it as the black tank "switch". Once I find my label maker I'll dress it up a bit and update my photos.
https://www.usplastic.com/catalog/it...clickid=search
Semi-finished product:
Chase leading toward the kitchen cabinets:
Connection at anti-siphon valve:
Linear Mode
