Doug, What I have done in the past is TIG-weld a stainless steel Swegelok fitting to the component in question which allows attaching to any type (copper, steel, galvanized ETC) of tubing. The sweglok fittings have a really secure ferrule crimp system that is good to 20,000 PSI. Edward A. Nauman\ C.E.O. Smart Litez Inc Palmdale, CA. 93551 (661) 305-7636