chassis heater plumbing in engine bay

[davidbrady]

Markus,

I prefer to use brass as does my local detroit diesel mechanic, but I don't see a problem with mixing brass with black iron. DD's long been screwing brass fittings into the cast iron engine blocks; although, I guess technically black iron isn't cast iron it's just iron with a protective "black rust" coating on it. My DD mechanic specifically warned against using galvanized iron, so I'd stay away from that. I don't think galvanic action is an issue when mixing black with cast with brass.

I seem to recall getting ball valves from DD that had integrated smooth hose bib ends.