Damage Mechanisms

I understand that glycol solutions are mildly corrosive to steel, and that galvanized steel is more of a problem than plain steel. There are corrosion inhibitors for this, but they might not be suitable if any food contact is possible, such as from piping leaks. This is a possible damage pathway that should be considered.

Another possible pathway to piping damage, from glycol or otherwise, is overpressure from improper pipe selection, rapid valve closure, etc.