2018 337RLS reflection plumbing

**IlleriaRose** · 03-08-2023, 09:56 PM

Please could anyone who has the same 5th wheel take pictures of the plumbing hoses coming into the p1 nautilaus manifold. Our pipes froze and I bought a new p1 and attached all the pex to the manifold but now I dont remember what hoses from the under part of the trailer go where.

**WhittleBurner** · 03-09-2023, 07:17 AM

Good luck getting this figured out. Hope you find your picture. Have you tried contacting GD for the plumbing schematic? unless of course it's like the electrical and no 2 are the same.

**livinthelife** · 03-09-2023, 09:59 AM

Originally Posted by IlleriaRose

Please could anyone who has the same 5th wheel take pictures of the plumbing hoses coming into the p1 nautilaus manifold. Our pipes froze and I bought a new p1 and attached all the pex to the manifold but now I dont remember what hoses from the under part of the trailer go where.

According to my husband it doesn't have to be the same rig. Anyone with the P1 nautilus should be able to send you a picture. We'd do it, but our rig is in storage currently.

**Dutchman2** · 03-09-2023, 10:20 AM

Originally Posted by IlleriaRose

Please could anyone who has the same 5th wheel take pictures of the plumbing hoses coming into the p1 nautilaus manifold. Our pipes froze and I bought a new p1 and attached all the pex to the manifold but now I dont remember what hoses from the under part of the trailer go where.

Check out this link. It might help. I would provide pictures but the rig is still in storage.

https://www.mygrandrv.com/forum/show...1-Another-Look

Dutchman2

**Kevin2282** · 03-09-2023, 10:27 AM

Originally Posted by IlleriaRose

Please could anyone who has the same 5th wheel take pictures of the plumbing hoses coming into the p1 nautilaus manifold. Our pipes froze and I bought a new p1 and attached all the pex to the manifold but now I dont remember what hoses from the under part of the trailer go where.

B&B Molders makes the Nautilus P1 system and everything that need to hook up your Nautilus P1 can be found here:

https://www.bandbmolders.com/index.php/p1/

Kevin

**Hoopy Frood** · 03-09-2023, 10:45 AM

That is a great resource. I downloaded all the manuals for future reference. Thank you muchly. I just wish the schematic had bigger print. Very hard to make out, even blown up.

**Kevin2282** · 03-09-2023, 10:52 AM

Originally Posted by Hoopy Frood

That is a great resource. I downloaded all the manuals for future reference. Thank you muchly. I just wish the schematic had bigger print. Very hard to make out, even blown up.

Hi Howard,

I changed my P1 over to PEX after a bunch of flex hose fitting leaks. Here are some of my photos if it helps.

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**Kevin2282** · 03-09-2023, 11:04 AM

To attach the PEX to any of the 1/2" flex line that I could not easily replace I came up with an adapter that has worked great for many years at regulated 65psi. Two 18.5mm Oetiker rings on the bigger PB side (flex hose) and a standard 1/2" PEX ring or cinch clamp on the PEX side. The standard PEX cinch ring tool also works on the 18.5mm rings. I purchased all of my 18.5mm rings on ebay.