Propane tank pigtail rupture

[Corycool]

Hi all, first time poster here. I just purchased a 2011 Keystone Hideout 19FLBWE last month as an upgrade from a pop-up. I was puttering around in it today and when I opened up one of the propane cylinders, I heard a loud pop then a hissing noise. I quickly went to shut it off. What had happened was the pigtail going from the tank to the regulator ruptured and exposed the braiding inside. What would have caused this? The only thing I can think of would have been that I might have turned the valve on too fast. Any advice would be great. Thanks!

[CavemanCharlie]

I wonder if maybe someone once dropped the tank while the hose was still hooked up causing it to be stretched and more likely to fail ?

Or, something like that. Seems to me like it got stretched somehow.

[Chris_Bryant]

The only time I have ever seen what looked like a rupture was when the hose was chewed by a squirrel. Usually, they just leak.

[beemerphile1]

Probably just age and maybe previous damage. Since you recently purchased this TT make a manometer and do the testing of your system described at the link below. The LPG system should be checked every year or two.

http://www.rverscorner.com/manometer.html

[jfkmk]

I would buy a spare pigtail as well. I've had one fail (built in safety valve failed) and a rodent chew through another. They're cheap and easy to replace.

[Huntindog]

SCVJeff wrote:

trail-explorer wrote:

Corycool wrote:
Thanks for the replies. What are the indicators that it could be the regulator?

The regulator won't cause the line to rupture.

The comment about "replacing the regulator" was just a "might as well replace it while you have stuff apart" (proactive / preventive measure.)

not sure if I'd wholesale replace it, but keep it on board. There are a very few things that will ruin a trip, but dead regulator is up there at the top of the list

X2.
After having to spend a day of my hunt going into town to purchase one, I now carry a spare.
The drive was about 350 miles round trip, and the part was double what I can normally pay for it. That plus a tank of fuel, and a wasted day....Yeah I carry a spare now.

[SCVJeff]

trail-explorer wrote:

Corycool wrote:
Thanks for the replies. What are the indicators that it could be the regulator?

The regulator won't cause the line to rupture.

The comment about "replacing the regulator" was just a "might as well replace it while you have stuff apart" (proactive / preventive measure.)

not sure if I'd wholesale replace it, but keep it on board. There are a very few things that will ruin a trip, but dead regulator is up there at the top of the list

[Corycool]

Thanks again folks. I will be replacing both hoses tomorrow.

[trail-explorer]

Corycool wrote:
Thanks for the replies. What are the indicators that it could be the regulator?

The regulator won't cause the line to rupture.

The comment about "replacing the regulator" was just a "might as well replace it while you have stuff apart" (proactive / preventive measure.)

[rbpru]

It has been my experience that a soon as you crack the Propane value the pressure causes the gas to gush out. I have never been able slowly release the pressure.

It sounds like the LP hose failed, time for a new hose.

[Lantley]

Lwiddis wrote:
Never heard of a "fast turn on" causing any issue regarding RVs and propane.

You always want to turn on lp valves slowly. Turn valves on too fast may cause the built in safety mechanism to engage, which will automatically limit the flow of propane.
The turn on phenomenon is for real, however it does not cause bursting hoses or any permanent damage

[time2roll]

Nothing. It is getting old enough I would just replace.

[Corycool]

Thanks for the replies. What are the indicators that it could be the regulator?

[time2roll]

Pigtail was damaged or defective. Replace both. I would replace the regulator while at it.
I recommend Cavagna brand if you have a choice. (amazon)

[Lwiddis]

Never heard of a "fast turn on" causing any issue regarding RVs and propane.