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Old 01-18-2003, 09:56 AM   #15
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1972 31' Sovereign
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Plumbing in new AS

Here's a picture I snapped at the AS factory of what the plumbing looks like around the Cold Water Heater. Looks like it's the bypass valve. Note different colors for hot and cold water.
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Old 01-18-2003, 11:23 AM   #16
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Austin (Hays County) , Texas
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Lokks just like my plumbing

I like the idea of using color-coded PEX for hot and cold.

One of my previous SOB trailers used the old gray stuff for all of the piping and it was delivered with the city water inlet tapped into the hot water piping by mistake. It wasn't hard to fix, but it was hard to figure out with all pipes looking the same and mostly hidden under the cabinets.

Some times it''s a cold water heater, sometimes a tepid water heater and sometimes a hot water hotter heater. I just settle for the term water heater.

John W. Irwin
2005 Classic 28 "Sabre-Dog III"
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Old 01-18-2003, 12:48 PM   #17
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Go to <> and look at the pipe and fittings. I have been able to find these items are most RV shops and even Lowe's and Home Depot.
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Old 01-18-2003, 07:33 PM   #18
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1967 22' Safari
clarkston , Georgia
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copper vs. pex

I went with copper , be sure to use the thicker grade of pipe available at big box stores.
I used braided stainless sections above the rear bumper to connect four quadrants of pre fabricated pipe--- I then fitted with solder sweats , if I felt comfortable with applying heat in the confined space-,- compression fittings if not. I also ran braided stainless to the water heater and sinks to avoid sweating solder in confined, fire prone areas.
This makes isolation of four zones easy to test and replace if necessary,
1 porstide Hot
2 portside Cold
3 starboard Hot
4 starboard Cold
Be sure the heater is properly ducted for cold weather survival.
I could just about pre fabricate and mail these out. I had fun making them and almost made spares!
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Old 07-11-2007, 11:12 AM   #19
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Just to clear up the PEX lifespan issue. Cross linked PEX has a lifespan of over 200 years not 10 to 15 years as often cited.

Northwest Mechanical, Inc. - Heating FAQ
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Old 07-11-2007, 12:03 PM   #20
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Los Lunas , New Mexico
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I've used whatever is easiest to use for the particular application. To replace a section that is long and easy to reach, copper is the choice. However, the copper pipe spaghetti that used to make up the mess near the water tank (piping to pump, drain valve, and bypass to fill the tank with city water), I redid with Pex.


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