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Old 05-30-2019, 10:35 PM   #1
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Connecting home hot water line to '67 Overlander hot water line w/PEX~Sharkbite

Dear Forum,

Ive tapped off our homes hot water line with 3/4" sharkbite and pex tubing which runs to the rear of our '67 Overlander.

My plan so far is to bring the Pex down from 3/4" to 1/2" and then use a 1/2" slip-tee sharkbite to tap into the AS's hot water line.

Would it be ok to use the sharkbite slip-tee to connect the Airstream's rear bathroom sink or tub/shower hot water line (would this allow hot water to run through all facucets)?

Or do I need to connect to one of hot water lines coming out or into the hot water heater?

Any tips or suggestions are welcomed and or if anyone knows of previous discussions that they can direct me to , would be much appreaciated!

Cheers!
Billy
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Old 05-30-2019, 10:59 PM   #2
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Connecting home hot water line to '67 Overlander hot water line w/PEX~Sharkbite

Do keep the PEX tubing out of the sun. UV light deteriorates PEX tubing over time. Cover it with foam pipe insulation to save energy as well.
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Old 05-31-2019, 05:07 AM   #3
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Is the plumbing in the 1967 AS original, and maybe copper? Tapping into a hot water line in the trailer -- to "back feed" the rest of the hot piping -- is OK, as long as there are no OEM check valves in the system. [*] There may be one as the trailer's hot water leaves the water heater? Or where the cold water enters the water heater? You have to know the details here. You don't want your "new" hot water going back into the water heater, and warming up the cold piping, and maybe back-feeding through the pump into the water tank [if the check valve there is bad or leaks].

You should probably consider adding check valves, per above questions, to keep you household hot water going where you want it to go.

Will you also have city water hooked up to your trailer to supply cold, and maybe to supply the water heater? Check valves all over will isolate your intended uses IMO.

If you provide more details of the existing setup, you will get better advice IMO.

Good luck, Billy.

Peter

[*] PS -- on edit -- any OEM check valves should only work in one direction of water flow, but the entire "check valve" part of the equation must be considered IMO.
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Old 05-31-2019, 10:15 AM   #4
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Great info!!!!! Thank you!!! Later today I will go out there and take pics of the water heater area and in the back (where all the bathroom pipes and valves are).
The AS has all orig. copper pipe.. but the water heater was replaced about 20 years ago.
Currently I am running city cold water directly to the AS.
Once I get the pictures up here, I think you'll have a better idea of what I have to work with and options to where I can tap into.
Thanks again!
Billy
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Old 06-29-2020, 09:00 PM   #5
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Hi OTRA15,
I finally got started on the hot water line project but l posted in the wrong Forum ("Gas,Piping, Tanks" instead of in "Plumbing"), Im going to repost in the Plumbing section now.... its a fun situation I have on my hands!J
Thanks
Billy
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