Please correct me if I'm mistaken:
I started researching why there are so many different types of "Quick-Connect" gas and air fittings. I'm glad I did.
It appears that propane
("RV") quick-connect fittings are designed to tighter tolerances and have a slightly different form factor than the air hose fittings available in the Big Orange Retail Giant (BORG). I'm not sure if there is a variety of specifically designed propane
fittings, but it would appear (and from experience) that a number of brands are NOT interchangeable.
So there are two types of fittings: the "coupler" and the "plug." The coupler provides the female end, and the plug provides the male end. They probably should be from the same manufacturer, right?. Also, in the propane
world, most couplers seem to have a shut-off ball valve incorporated right into the fitting.
One should NOT attempt to use air fittings (like for my air compressor and air tools) in the propane world.
Also, should the coupler and valve be at the appliance end of the hose or at the supply end of the hose?
Lastly, does anybody know of a page out there in internet land that discusses the myriad types (D, L, M, automobile, industrial, universal) of fittings and how they are specified?
Thanks for any comments!