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Old 05-02-2022, 06:55 PM   #1
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1989 34.5' Airstream 345
Kingsland , Texas
Join Date: Aug 2021
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Starting plumbing replacement

I have a leak that I started digging into. I have stuff pulled apart so I can find where the actual leak is hiding. And Ive found some interesting plumbing in there!


1) Looks like I have a pressure regulator and something else tucked under the bed


2) I have the "auto fill" feature - But this doesnt seem to be working. I think I hear the relay/solenoid click, but I dont think it fills. Will look more into this.


3) I have 2 cold water lines that run from the back corner all the way over to the shower before coming together in a tee. Why not put the tee in the back corner?


Looks like the leak is there at the shower tees. Will turn on the water yet to see.


Aaron
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Old 05-02-2022, 08:25 PM   #2
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1991 35' Airstream 350
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I know it might sound like a lot of work, but I would really think about replacing all the wimpy gray lines and plastic fittings with PEX and all brass fittings!
You will be able to access all your fittings, tubing and tools at any hardware store, lowes, or home depot.
You should be able to pull the new PEX line where you need with the old gray line.
It is well worth the time and effort replacing the old week system.
That is a pressure regulator and check valve. My ck valve is at the in line connection, and I always use a regulator on the hose at the hydrant!

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Old 05-03-2022, 05:26 AM   #3
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1989 34.5' Airstream 345
Kingsland , Texas
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I am planning to replace much of the poly line within the next week or so. From the kitchen back at least. Ill leave the rest for another project as there seems to be quite a bit more disassembly just to get to it. Ill poke around though and see.


As for the regulator, I have been using one at the spigot. But looks like I can drop that and use this one instead.


Aaron
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Old 05-03-2022, 06:03 AM   #4
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Sounds good, another one for the list!

I would continue to use the regulator at the spigot! We were at a new RV park years ago, and the pressure was so high that it blew up our new hose! From then on I never hook up without it!
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Old 05-03-2022, 08:24 AM   #5
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I would seriously consider using UPONOR over PEX. No crimp fasteners too fail. It does use a special tool to expand the pipe and then a ring clamps the pipe to the fitting using internal tension.
I just had to re-pipe my home and the plumber used Uponor. Amazing. No metal crimp rings.
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Old 05-10-2022, 10:30 AM   #6
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1989 34.5' Airstream 345
Kingsland , Texas
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Is there a way to adjust the fresh water tank meter? I determined the issue with that not reading the tank level. It was superior wiring job that had come apart. Fixed and now reading half a tank when its full!


thanks,
Aaron
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Old 05-10-2022, 10:39 AM   #7
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Quote:
Originally Posted by Mollysdad View Post
I would seriously consider using UPONOR over PEX. No crimp fasteners too fail. It does use a special tool to expand the pipe and then a ring clamps the pipe to the fitting using internal tension.
I just had to re-pipe my home and the plumber used Uponor. Amazing. No metal crimp rings.
Uponor is what we installed in both our trailers and barn apartment. We have the Milwaukee expander tool that works great in tight spots. Lowes now sells Grade A Sharkbite expandable tubing that is compatible with the more expensive Uponor. Good luck whichever material you use.
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Old 05-10-2022, 11:43 AM   #8
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On our 350, there is adjustments on the back of the display panel. You will have to remove it to make the adjustments. I had the complete panel down working on the microwave. Click image for larger version

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Old 05-10-2022, 03:18 PM   #9
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1982 310 MoHo (Sold! New home, NYC.)
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Old 06-04-2022, 02:38 PM   #10
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1989 34.5' Airstream 345
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Thanks for all the help on this!


I was able to get half the Slug re-plumbed with pex. Left the other half for another day.


Went for a week trip this past few days and thought I had a leak somehow. However, Im pretty sure the issue was that my auto-fill valve got slightly stuck open and continued to fill the tank. Once filled, the water slightly leaked back inside at the fill port (and mostly outside!). When I checked inside the auto-fill valve fittings were wet and I just assumed it was not only stuck, but leaking externally as well.

Testing today I see NO leaks. I opened and closed the auto-fill valve under pressure and it even cleared. All seems to be functioning as expected!


At least today....


Aaron
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