REMOVED NAUTILUS ---tired of the leaks and hard to get tools into

[goducks14]

Nice job.
Never understood the need for all the valve changing. TT/5er's of the past simply had an outside fresh tank fill port usually behind a little square door. City water was a simple fill port on the outside of the trailer.
Why did it have to get so complicated? What looks like a slick marketing item for the manufacturer has turned into a nightmare for some owners.

[Hoopy Frood]

Nice job.
Never understood the need for all the valve changing. TT/5er's of the past simply had an outside fresh tank fill port usually behind a little square door. City water was a simple fill port on the outside of the trailer.
Why did it have to get so complicated? What looks like a slick marketing item for the manufacturer has turned into a nightmare for some owners.

That's it in a nutshell: Marketing. I kind of look at the Nuatilus like tailfins on the cars in the 50's: "Ooh, look what we can do". Does it serve a purpose? It does the same thing as the old system, but with lots more fail points, and a huge amount of unnecessary complexity.

[ForBruce]

For those of you interested on how i did the plumbing , i have made a diagram.
also look at the chart showing which valves to open for each feature and how that effects the plumbing

[Bruce M]

Nice Job on your plumbing project, I bet if I did that job it would take many more than the 3 visits to the big box that is required by the plumbing gods.

I agree with the others that don't seem to see the need of the nautilus system.
What's the saying...If it aint broke don't fix it.

[dryfly]

@ForBruce,

That's the diagram I was looking for. Thanks. I'm guessing that's not too far different than the factory Nautilus diagram.

[Cahriad]

@ForBruce
Going to be using your design to retrofit my 2018, Did the change affect the way the low-point drains are connected or were they left alone?

Thanks again for the great design.

[ForBruce]

The low Point drains remain the same however looking at the design the low Point drains do not work to take out all the water do not rely on them if you need more information send me a PM with your phone number and I'll give you a call

[FT4NOW]

I did this on my 399 and completely removed the low point drains. Based on where they connect to the plumbing they are pretty much useless as they aren't at a low point at all. I was still able to winterize without any issues with the drains removed.

[dryfly]

I did this on my 399 and completely removed the low point drains. Based on where they connect to the plumbing they are pretty much useless as they aren't at a low point at all. I was still able to winterize without any issues with the drains removed.

By blowing out lines and using anti-freeze, or just anti-freeze alone? I would think in the diagram from @ForBruce winterizing would be more straight forward than the OEM Nautilus system i.e. no need to go through the step of turning the handles to the 45 degree position.

[Kevin2282]

@ForBruce

Great work. Looks good. Is there any place to find a schematic diagram of the OEM Nautilus system in Grand Design trailers? I'd like to see how all the valves direct water.

These are the Nautilus manuals that I use.





I completely redid my Nautilus panel after a lot of leaks. I liked the functionality of it so I kept it and used PEX as shown in the install manual. I also did some other modifications shown in this post.
https://www.mygrandrv.com/forum/show...ebuild-started

Kevin