Pig tail propane tank connector hoses.

[PaulJ2]

Walked by my trailer today and smelled propane. Checked and found both pig tail hoses from my propane tanks on the hitch were leaking. Both were leaking at the connections where the hoses thread into the regulator. At a swivel joint near the threaded connector but not the threads. One was leaking at both ends, there and also the swivel end near the tank end connector.
These were both replaced two years ago for the same problem.
My question: Does anyone make a brand that does not do this in a year or two?
These are the hoses with the large green hand tight ends at the tank.

Buy the way--found the problem by squirting soapy water on the connections.

[trailer_newbe]

They leak at the crimp joint where it transitions to the threads. Some designs are better than others, but if they seem to swivel easily, they will be leakers right out of the box.

[richclover]

time2roll wrote:
Only pipe threads should have tape or dope. No tape on inverted flare, o-ring or other compression seal.

+1. !

[time2roll]

Only pipe threads should have tape or dope. No tape on inverted flare, o-ring or other compression seal.

[PaulJ2]

Rover_Bill wrote:

PaulJ2 wrote:
...Both were leaking at the connections where the hoses thread into the regulator...

You may want to try a PTFE thread seal tape specifically formulated for propane something like THIS.

They were leaking at a swivel joint near the threads but not at the threads themselves. The new ones were wrapped with the yellow tape on the threads when he handed them to me. So he did everything right i guess.

[Rover_Bill]

PaulJ2 wrote:
...Both were leaking at the connections where the hoses thread into the regulator...

You may want to try a PTFE thread seal tape specifically formulated for propane something like THIS.

[PaulJ2]

rhagfo wrote:
Take your old ones to your local Propane DEALER with a service department, and have them make you replacements. I have found that the hose they use is higher quality hose that remains flexible with age. The store bought ones seem to get stiff within a year. Cost is about the same as store bought.

Bingo!! I found a local dealer here in town that made up a new set while i waited.
Much better, no swivel joints at all. $10 per hose.

Thanks all.

[smarty]

time2roll wrote:

smarty wrote:
Does anyone make these with a metal twist on connector versus plastic?
I have had issues with these plastic fittings when the temps are very cold, even to the point where one cracked in half

I think the plastic is designed to melt and disconnect during a fire. The internal valve on the cylinder would then shut off the flow of propane.

Makes perfect sense, thanks!

[time2roll]

smarty wrote:
Does anyone make these with a metal twist on connector versus plastic?
I have had issues with these plastic fittings when the temps are very cold, even to the point where one cracked in half

I think the plastic is designed to melt and disconnect during a fire. The internal valve on the cylinder would then shut off the flow of propane.

[allen8106]

I've gotten 8 years out of my replacements and still going.

[smarty]

Does anyone make these with a metal twist on connector versus plastic?
I have had issues with these plastic fittings when the temps are very cold, even to the point where one cracked in half

[time2roll]

I recommend Cavagna brand pigtails for a superior crimp on the hose ends.

https://www.rvplus.com/lp-gas/pigtails-gas-hoses-and-accessories/pigtails/?features_hash=V758

[richclover]

PaulJ2 wrote:
Walked by my trailer today and smelled propane. Checked and found both pig tail hoses from my propane tanks on the hitch were leaking. Both were leaking at the connections where the hoses thread into the regulator. At a swivel joint near the threaded connector but not the threads. One was leaking at both ends, there and also the swivel end near the tank end connector.
These were both replaced two years ago for the same problem.
My question: Does anyone make a brand that does not do this in a year or two?
These are the hoses with the large green hand tight ends at the tank.

Buy the way--found the problem by squirting soapy water on the connections.

I recently replaced my original regulator (less than 2 years old, another story), and found both hose connectors leaked when the original hoses were flexed. Between the hose fittings.

I ordered these. No leaks. For now 😉

https://www.amazon.com/gp/product/B07FC7K7R7/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1


I keep a spray bottle of soapy water on the shelf, too.

[rhagfo]

Take your old ones to your local Propane DEALER with a service department, and have them make you replacements. I have found that the hose they use is higher quality hose that remains flexible with age. The store bought ones seem to get stiff within a year. Cost is about the same as store bought.

[deltabravo]

I replaced mine with a braided style hose.

They are like the ones shown in this video