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Old 04-23-2018, 01:09 PM   #1
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2005 25' Safari
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Versailles , Indiana
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Unhappy City Water Line Leak ?? Pressure Regulator and Back Flow??

We have a leak in the copper city water line on the outside of our trailer approximately two feet away from the city water hookup (which on our trailer is the hookup connection and two additional hose connections with shut off valves). While we do not use our city water hookup often (we usually use the fresh water tank/water pump), when the water pump is engaged, water is leaking from the outside city water line. Am I correct in thinking that our back flow preventer is not working? I thought we had a back flow preventer built into our original water pressure regulator, but now I am not sure since water is obviously flowing into the city water line from the water pump. Iíve attached photos of the city water hook up and the brass regulator (if that is indeed a regulator and not something else entirely). The silver foam tape is from the PO, just havenít had reason to remove it yet, though I had to peel some off to see the connection from the copper city line to the regulator.

This leads me to a few questions ~
  1. Can we replace the outside copper city water line with PVC? Is it feasible to replace the bad section or is it relatively easy to replace the all of the line currently below the trailer (I am not able to access the line where it enters the trailer) and the city water connection configuration? (one of the two extra shut off valves is stuck anyway)
  2. Can we install a back flow preventer on the outside line? Versus having to cut and remove our old regulator which is seated in the bottom of the wardrobe?
  3. Would a water pressure regulator installed at the city water hookup also function as a back flow preventer?

Also Ė I would rather not have to weld anything together when making the repairs if at all possible.

Any thoughts/suggestions would be greatly appreciated.
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Robb, Jenn & The Brown Dog (Dex)
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Old 04-23-2018, 03:58 PM   #2
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1985 25' Sovereign
Doubs , France
Join Date: Jan 2016
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Helloo.
I had many plumbing problems.
And I'm rebuilding everything.
In disassembling, I saw the cause of the problems.
The water pressure regulator was blocked.
So, too much pressure.
Fittings broke.


The regulator seems to be the same as you.


I disassembled, cleaned.
And also understood that this regulator should be able to be back flow preventer.
Maybe your regulator is it also blocked ?
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Old 04-23-2018, 04:15 PM   #3
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1985 25' Sovereign
Doubs , France
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Also...
I completely re-build my water network.
I use the hose in France called "PER".
Is it called PEX in the USA ?



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Old 04-24-2018, 01:21 PM   #4
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Thanks so much for the photos - they definitely help!
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Old 04-29-2018, 03:04 PM   #5
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Copper with PEX?

Has anyone had experience replacing a section of copper pipe with PEX? This is for a section of the city water inlet line on the outside of the trailer.

Thanks!
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