[Bill Bess]

Ya, a rubber barrier (connector hose) between the two dissimilar metals may stop your corrosion problem. Electrolysis maybe causing your problem..current jumping from the SS steel over to the mid steel, with the mild steel being the sacrificial metal, resulting in rust. This is a real problem with systems in water and buried underground (pipelines).

Maybe postion your filters where they are easy to get at to change would be helpful too.

Best Regards, Bill