well I brazed the one outlet of the txv. I had it tightly wrapped with a sopping wet cloth but the entire thing still got very hot to the touch by the time i was finished. Is that ok? The acetylene torch (no O2)wasn't quite hot enough so it took a while to heat up for the solder to flow, are there any rubber gaskets or heat sensitive parts inside these things that i may have damaged?

ill get a copper gasket for the non-brazed flare and look into the loctite, sounds like just what i need.