Quote Originally Posted by JohnInSoCal
But I would think that any type of protection/galvinazation for pool equipment metal will eventually breakdown or have a few places that protection wasn't applied correctly and when that salt does get into contact with the metal that it might corrode quicker than if it was just water with very low salt levels would ?
This is true. However, the galvanized metals are designed to exist in a Chlorine environment. It is the Chlorine in the salt that makes salt corrosive.

The examples you gave are indeed good examples, but the concentrations of salt we are discussing are minuscule compared to sea water or road salt. In perusing the documentation about SWGs, I haven't come across anything that states any additional corrosive properties or warnings when using them. Frankly, I think that the levels of salt we are talking about are just so low that it really doesn't make that much of a difference.