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Old 09-15-2011, 05:54 PM   #1
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This can't be normal?

Ok I was looking into doing some painting on the tongue of my AS when I noticed that the gas line was mashed flat under the A-frame.

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I haven't had much experiance with gas lines, can I make a splice alittle further back or does the entire line have to be replaced?

Also,

This is strange to me, but when I let the gas line down a very thick dark colored oil began to flow out of the gas line.....
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It also has a horrible smell.

Is this normal, really dont see how it can be.

How would one go about cleaning out the lines or what is the needed action I should take next?
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Old 09-15-2011, 06:08 PM   #2
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Found this in thread from 2010.. At least you are not alone..

"Propane is a petroleum by-product (or natural gas processing, which is not relevant here) - it is a specific fraction and no fraction is 100% pure. Over time, a very small amount of the heavier fractions will settle out and make a light, oily residue. Over many years, this residue can become quite thick, even tar-like. It is non-hazardous."

As for splicing into line, I believe it depends on quality of remainder of line.. There are fittings you could attach to cut end, and splice, but I suspect new line would be safer bet.. Others who have more experience with propane hard lines may want to weigh in...
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Old 09-15-2011, 06:14 PM   #3
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My guess once you dig into the replacement parts it would be cheaper and easier to replace the entire section! Plus you are reducing the number of joints and areas of leaks!

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Old 09-15-2011, 06:34 PM   #4
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I found the same problem on the 2005 AS we bought -ooked as though someone had put a jack under it!

Surprisingly all appliances were still working, but I suspect in colder weather when propane pressures were lower there could have been problems.

I replaced the line myself back to the first union. I wouldn't have considered doing less.

The pipe is cheap enough, so why introduce extra joints that could be another source of leaks?!

Just my thoughts!

Brian.
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Old 09-15-2011, 06:41 PM   #5
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Ours is a bit flattened, too, but so far (many years down the road) everything seems to be working well, and the pipe isn't leaking. Good enough for me!

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Old 09-15-2011, 07:44 PM   #6
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Ok

Thanks for the replies everyone, guess tomorrow I will look at replacing the line and not doing a splice.

Glad to know that the oil is nothing hazardous or dangerous.
Should I try and blow the oil out of the lines while I have the lines disconnected? Seems like this would be a good time to clean the pipes.
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Old 09-15-2011, 08:00 PM   #7
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That oil IS the smell. I forget the name of it, and don't bother looking it up, I'll forget it in five minutes but that's what they put in the gas so that you will smell it when you have a leak. It accumulates with time in your gaslines.

If you do the replacement yourself, remember two things:
  • Get the special yellow joint tape, don't use the usual white plumber's tape.
  • Also check very thoroughly for leaks. You can buy a little bottle with a soapy tester fluid, or some people just use a bit of dish detergent.
I would replace the section, get yourself a clean main pipe!
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Old 09-15-2011, 08:12 PM   #8
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Thanks

Quote:
Originally Posted by Aage View Post
That oil IS the smell. I forget the name of it, and don't bother looking it up, I'll forget it in five minutes but that's what they put in the gas so that you will smell it when you have a leak. It accumulates with time in your gaslines.


If you do the replacement yourself, remember two things:
  • Get the special yellow joint tape, don't use the usual white plumber's tape.
  • Also check very thoroughly for leaks. You can buy a little bottle with a soapy tester fluid, or some people just use a bit of dish detergent.
I would replace the section, get yourself a clean main pipe!
Thanks for the info, I learned something new today. Had no idea the oil is the smell.

Ill be sure to look for the yellow tape and Ill be SURE to check for leaks.
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Old 09-15-2011, 08:15 PM   #9
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Quote:
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or some people just use a bit of dish detergent
That dish detergent can be corrosive, and some ingredients don't play nice with LP.
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Old 09-15-2011, 08:23 PM   #10
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That dish detergent can be corrosive, and some ingredients don't play nice with LP.
Ah! I dint know that. Then stick with the li'l bottle that's purpose-made for this job. That's what I did...
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Old 09-15-2011, 08:52 PM   #11
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Sounds like you have already decided to replace the entire section. Good. With age, copper tubing becomes much less pliable and a bit harder to work with around curves and such. (when you try to bend it a bit, it creases instead) You are much better off replacing the whole section. Probably going to need a flaring tool. available at Lowes/Home Depot... Do definitely use the yellow tape. But all in all, one of the easy things to attack...
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Old 09-16-2011, 06:11 AM   #12
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Quote:
Originally Posted by Aage View Post
That oil IS the smell. I forget the name of it, and don't bother looking it up, I'll forget it in five minutes but that's what they put in the gas so that you will smell it when you have a leak. It accumulates with time in your gaslines.

If you do the replacement yourself, remember two things:
  • Get the special yellow joint tape, don't use the usual white plumber's tape.
  • Also check very thoroughly for leaks. You can buy a little bottle with a soapy tester fluid, or some people just use a bit of dish detergent.
I would replace the section, get yourself a clean main pipe!
Just curious - isn't the teflon tape only for tapered pipe thread joints? I have never used any kind of tape for flared fittings due to the nature of the way the seal is achieved.

Brian
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Old 09-16-2011, 07:51 AM   #13
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Mercaptan

Quote:
Originally Posted by Aage View Post
That oil IS the smell. I forget the name of it, and don't bother looking it up, I'll forget it in five minutes but that's what they put in the gas so that you will smell it when you have a leak. It accumulates with time in your gaslines.

If you do the replacement yourself, remember two things:
  • Get the special yellow joint tape, don't use the usual white plumber's tape.
  • Also check very thoroughly for leaks. You can buy a little bottle with a soapy tester fluid, or some people just use a bit of dish detergent.
I would replace the section, get yourself a clean main pipe!

The "smell" is Mercaptan. Didn't look it up. Just one of the random bits of useless knowledge cluttering my brain. Maybe now that I let it out I'll remember where I put my keys......

Sue
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Old 09-16-2011, 08:12 AM   #14
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Just curious - isn't the teflon tape only for tapered pipe thread joints? I have never used any kind of tape for flared fittings due to the nature of the way the seal is achieved.

Brian
Yes, and he showed a threaded joint in his photo. You are right about the flared fittings; no tape.
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