One other possible issue, at least to be aware of, stainless lines.
A long time ago, maybe 25~30 years?, we custom-bent fuel lines. We no longer do, so the following is not a conflict of interest post. In fact, I still have a commercial Di-Acro machine that I no longer use.
As our focus for the lines, were lines for GM tripowers (Chevy and Caddy used steel, Olds used copper, steel and aluminum, and Pontiac used steel and aluminum. Buick did not have a tripower, but used steel for the dual quads. So we ordered a large amount of tubing, mostly steel and aluminum, in 5/16 and 3/8.
About this time, stainless became the "rage". I never liked the stuff, but try to give the customers what they like. Went back to the manufacturer to order some stainless. The guy on the other end of the line asked "do you wish to order any of the special fittings?" I replied no, I could buy fittings at any auto parts store. He said just a minute, and put me on hold. A couple of minutes passed, and another guy came on the line, and identified himself as one of the company engineers. He asked what I was doing, and I explained. He then asked "you do know that stainless CANNOT be flared at greater and 37 degrees, and automotive fittings are 45 degree?". I said no, I did not know that. We talked for awhile longer, and he finally said "to protect you, we are going to refuse your order!"
So, summing up the above:
(1) This is NOT my field
(2) This was a long time ago, perhaps a different stainless alloy exists today that can be flared 45 degrees, I don't know.
(3) When an engineer tells me something is unsafe, I tend to listen
(4) WHEN A COMPANY REFUSES AN ORDER BECAUSE THEY BELIEVE THE APPLICATION IS UNSAFE, I REALLY TEND TO LISTEN. With many companies, it is all about the money!
Food for thought!
Jon
