Propane leak at the tank connection - Escape Trailer Owners Community

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Old 10-15-2017, 03:49 PM   #1
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Propane leak at the tank connection

What might be a possible solution to a leaking pigtail connection short of replacement. Visual inspection looks normal. Any ideas would be appreciated.

Allan
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Old 10-15-2017, 04:01 PM   #2
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What might be a possible solution to a leaking pigtail connection short of replacement. Visual inspection looks normal. Any ideas would be appreciated.

Allan
Is the threaded connection leaking or the hose itself? Check with liquid soap. They make a special stuff for leak checking. Available from home improvement or hardware stores. Dish soap diluted will work too. Look for bubbling. If its threaded connection then try tightening. If that doesn't work then unscrew and use pipe dope or yellow teflon tape and reconnect. If it is the hose or crimp fitting then replace.
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Old 10-15-2017, 04:15 PM   #3
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Take the pigtail off. Carefully clean any sealant or any "teflon tape" out of the threads with a tip of a pen knife blade or ice pick. Easy does it. Do the same on the receiving threads in the regulator. Re wrap the threads on the pigtail about four turns of gas grade tape. PTFE. Screw back in , turn on tank, Check for leaks. If it still leaks, buy a new pogtail. Rarely it can be the regulator threads. If so buy a new one, they aren't that much. I am assuming your leak is at the regulator. If it's at the tank end and not a bad tank valve, buy a new pigtail. YMMV. Don't skimp on safety items, it isn't worth it. Salis populi suprema lex.
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Old 10-15-2017, 06:11 PM   #4
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What might be a possible solution to a leaking pigtail connection short of replacement. Visual inspection looks normal. Any ideas would be appreciated.

Allan
We had a leak at the pigtail almost from day one . No matter what I did it went back to leaking . Finally changed out the regulator and both pig tails a year ago . No more problems since . Pat
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Old 10-15-2017, 06:39 PM   #5
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What might be a possible solution to a leaking pigtail connection short of replacement. Visual inspection looks normal. Any ideas would be appreciated.

Allan
There is also a small "O" ring located on the tank valve, this is what the pigtail fitting seals against. If this gets damaged there can be a leak which might appear to be coming from the pigtail itself. Rotating the pigtail fitting once its sealed against the "O" ring on the tank will cause tearing of the "O" ring.
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Old 10-15-2017, 06:56 PM   #6
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There is also a small "O" ring located on the tank valve, this is what the pigtail fitting seals against. If this gets damaged there can be a leak which might appear to be coming from the pigtail itself. Rotating the pigtail fitting once its sealed against the "O" ring on the tank will cause tearing of the "O" ring.
I changed out the O ring etc. It looked like the pigtails were cross threaded . The regulator just needed changing . Everything was new and I hate to replace if I can fix but I just gave up and changed out everything and have not had a issue since . Pat
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Old 10-15-2017, 08:15 PM   #7
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We had a propane odor near front of trailer. Soapy water indicated it was the crimp fittings on the pigtails at the regulator connection. Bought new ones and problem solved, but your trailer is much newer so i’d check all the fittings first and nail down the problem. The Mr. Heater pigtails are more expensive but are better made. You’ll see how they do the full brass crimp fitting versus the small ring on the cheaper ones.

By the way these pigtails needed a small adaptor fitting because our regulator accepts a 1/4” male NPT, not 1/4” inverted flare. It looks like it depends on the regulator. Some accept the inverted flare on the pigtails directly so you might not need it.

http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1

https://www.amazon.com/Camco-59953-P...EKQCBEMQ8X6Z2Y

Grab some of the yellow PTFE pipe thread tape too.
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Old 10-15-2017, 08:22 PM   #8
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We had a propane odor near front of trailer. Soapy water indicated it was the crimp fittings on the pigtails at the regulator connection. Bought new ones and problem solved, but your trailer is much newer so id check all the fittings first and nail down the problem. The Mr. Heater pigtails are more expensive but are better made. Youll see how they do the full brass crimp fitting versus the small ring on the cheaper ones.

By the way these pigtails needed a small adaptor fitting because our regulator accepts a 1/4 male NPT, not 1/4 inverted flare. It looks like it depends on the regulator. Some accept the inverted flare on the pigtails directly so you might not need it.

http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1

https://www.amazon.com/Camco-59953-P...EKQCBEMQ8X6Z2Y

Grab some of the yellow PTFE pipe thread tape too.
Dave didn't know about Mr. heater pigtails but that is what we bought Pat
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Old 10-15-2017, 09:59 PM   #9
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Allan, which end of the hose is leaking? The connection at the tank and the connection at the regulator are very different, so the solution would be different.

As for threaded fittings... tapered pipe threads and flare fittings are entirely different. Only tapered pipe threads use a sealant (such as tape or dope). Make sure you clearly understand which one you are dealing with.
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Old 10-15-2017, 10:05 PM   #10
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Originally Posted by rubicon327 View Post
By the way these pigtails needed a small adaptor fitting because our regulator accepts a 1/4 male NPT, not 1/4 inverted flare. It looks like it depends on the regulator. Some accept the inverted flare on the pigtails directly so you might not need it.
I think all regulators have female 1/4" pipe thread inlet ports; some just come with the adapter to inverted flare, and others don't. Pigtails are available with either inverted flare ends or with male NPT to go directly into the regulator port; I would always use inverted flare to make future pigtail replacement easier.
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