ELECTRO GALVANIC?
ELECTRO GALVANIC?
(OP)
IT IS COMMON TO HAVE A DI-ELECTRIC UNION ON COPPER TO STEEL PIPE CONNECTIONS. IS THIS NECESSARY FOR DUCT CONNECTIONS AS WELL? MY UNDERSTANDING IS THAT THE WATER IS THE CATALYST FOR THE CORROSION, BUT CAN MOISTURE LADEN AIR PRODUCE SIMILAR RESULTS (I.E. COMMERCIAL DISHWASHER EXHAUST?)





RE: ELECTRO GALVANIC?
RE: ELECTRO GALVANIC?
However, without insulating washers, the potential always exists except in a vacuum. You should not connect different metals together as ductwork - without an insulating gasket inbetween. Even then, special attention is needed for the attachment mechanism.
This is a very interesting site on corrosion that will give you more info than you'd ever want:
Corrosion Doctors - Galvanic Corrosion
RE: ELECTRO GALVANIC?
BTW TOMBMECH: THE LINK YOU POSTED IS VERY INFORMATIVE
THANKS AGAIN