Originally Posted by Aerowood
I think are the same except propane requires a double flair which is 45 degrees. AN aircraft and some high pressure hyd. fitting are 37 degrees.
Are you sure about that? Not saying it is wrong, but I have both single flaring and double flaring tools, but I have only ever used my double flaring tool for automotive brake pipes. (used to restore sports cxars as a hobby!)
I was of the understanding that the double flare is needed to give added strength to the flared portion of the pipe when in use for high pressure applications - such as brake lines.
By contrast, the pressure in our AS propane lines after the regulator is extremely low - nominally 11" water column I believe, which I think translates to less than a half a psi - virtually no pressure at all.
Would be interested to know if I am wrong here, it sure wouldn't be the first time!
I'd like to know for sure which flare is needed, because I just found the main 5/8" O.D gas line under our Airstream is squished almost flat, and I have just bought new tubing to replace the line!
Cheers ....... Brian