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Old 06-08-2015, 06:53 AM   #1
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1978 28' Argosy 28
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Flexible LGP line to connect to fridge

Hey group. I just purchased an Argosy MH that did not come with a fridge. I picked up a nice Dometic until and will be installing it shortly. My LPG hardline pokes up through the subfloor and needs to connect to the back of the fridge. There is no way for a 'hardline to hardline' connection obviously. Can someone tell me what kind of flex line I need to adapt these? Is this a standard home depot flexible gas line connect hose?
Sorry for the newbie question. I'm sure this is a simple thing.

Thanks,
Ben
Austin, TX
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Old 06-08-2015, 07:20 AM   #2
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My fridge had a hard copper line connected where it enters the trailer and to the back of the fridge with flare fittings. It was bent to line up with the fridge fitting. When swapping fridges I had to cut, rebend and reflare the end.
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Old 06-08-2015, 07:27 AM   #3
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Thanks, much appreciated. So, is the correct method to use all hardline fittings?
Apparently I need to hard-mount the fridge, then rework the LPG lines together?
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Old 06-08-2015, 07:55 AM   #4
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Slight correction. I believe my LP line is "soft" copper but still not a flex line.
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Old 06-08-2015, 09:05 AM   #5
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The flex lines used for residential purposes are not suitable for RV use. They will not withstand the over the road vibration. Copper tubing is the best solution.


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Old 06-08-2015, 09:09 AM   #6
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P.O. added a propane wall lamp to my trailer using residential flex line. I removed it.
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Old 06-08-2015, 09:13 AM   #7
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Quote:
Originally Posted by bpg_austin View Post
Hey group. I just purchased an Argosy MH that did not come with a fridge. I picked up a nice Dometic until and will be installing it shortly. My LPG hardline pokes up through the subfloor and needs to connect to the back of the fridge. There is no way for a 'hardline to hardline' connection obviously. Can someone tell me what kind of flex line I need to adapt these? Is this a standard home depot flexible gas line connect hose?
Sorry for the newbie question. I'm sure this is a simple thing.

Thanks,
Ben
Austin, TX
Ben,

All LPG connections should be rubber flex from outside of trailer to inside appliance, Refer, Water heater, Stove, Heater, etc.

Never use solid copper line directly into the appliance! Ever!!!

A local propane dealer in your area will have what you need. Camping World and other RV stores carry these lines. The box store will have copper line, brass fittings, tubing cutter and flare tool if you need them.

Please, research this on the internet! Be safe out there!!

-Dennis
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Old 06-08-2015, 09:17 AM   #8
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Great info.
So.. since I'm not up to speed on gas lines.. Home depot does sell rolls of 3/8" copper tubing.

3/8 in. ID x 10 ft. Copper Type L Soft Coil (1/2 in. OD)-PCLE-375L010 - The Home Depot

This look like the right stuff with appropriate fittings?
Thanks again, hopefully I'm almost done with the rookie questions.

Note: Batman, your post came up at the same time as mine. So, are you telling me I need to install a rubber line from my hardline to the back of my fridge? Not a soft copper line? I'm getting confused here. Will certainly do some more internet reserach before purchasing anything.
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Old 06-08-2015, 09:24 AM   #9
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flexible copper

Just walked out to my boss's (not currently running) airstream and took this photo. Looks like he has the soft copper connection from the hardline underneath to his fridge. This is what I thought I was trying to duplicate from the 1st two posters comments.
Is there a consensus between this method and a flexible rubber line?
This will be inside the camper, so it would be bad if it ever leaked. I'd assume that's why people are using a copper line here. ??
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Old 06-08-2015, 09:34 AM   #10
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Originally Posted by bpg_austin View Post
Great info.
So.. since I'm not up to speed on gas lines.. Home depot does sell rolls of 3/8" copper tubing.

3/8 in. ID x 10 ft. Copper Type L Soft Coil (1/2 in. OD)-PCLE-375L010 - The Home Depot

This look like the right stuff with appropriate fittings?
Thanks again, hopefully I'm almost done with the rookie questions.

Note: Batman, your post came up at the same time as mine. So, are you telling me I need to install a rubber line from my hardline to the back of my fridge? Not a soft copper line? I'm getting confused here. Will certainly do some more internet research before purchasing anything.

Sorry Ben,
It can be confusing with so much different input. You must temper your judgement with facts. That is why I urged you to do some more research on the subject. Don't listen to me, just the facts.

-Dennis
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Old 06-08-2015, 10:06 AM   #11
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Sorry Ben,
It can be confusing with so much different input. You must temper your judgement with facts. That is why I urged you to do some more research on the subject. Don't listen to me, just the facts.

-Dennis
So what are the facts ? Hard line or rubber flex ? I currently have a new refrigerator to install and now I'm confused with the different views stated here maybe a propane tech will chime in with the correct way it should be done ?
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Old 06-08-2015, 10:24 AM   #12
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All Airstreams built forever it seems have used copper lines to the appliances, including those built today at the factory. Post #7 which states to never, ever use copper directly to the appliance is simply wrong. Sorry for being blunt but the information is not correct.

Do not use any of the flex lines that are available at places like Home Depot or Lowe's as they are not made to stand up to the constant jiggling in an RV and are not approved for RV use.

A rubber flex line could be used but are hard to find and are subject to more wear and deterioration than copper.

Copper, with proper flare fittings is the standard way to connect propane appliances to the system. If you are not familiar with how to bend and flare copper, I would suggest having a professional do the job for you.
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Old 06-08-2015, 10:42 AM   #13
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I did the bending and flaring on mine with no trouble, though the proper tools are required.
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Old 06-08-2015, 10:45 AM   #14
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I would never use flexible stove or dryer connectors in my rv. They will crack over time and the propane, being heavier than air, could collect under the floor above the belly pan. Only use soft copper. You can drop down to 1/4" if you need to make tighter bends. The 1/4" copper is much larger than the orifice for the fridge or hot water tank. I hope the picture of the water tank I just installed uploaded.
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