Cast Iron fitting in Open Water Systems
Hi,
This might not be the right forum since it is more an engineering/galvanic corrosion question, but is it OK to thread a copper fitting (1" CxM) into a cast iron fitting? I'm worried about corrosion (copper threads = lots of surface area with cast iron threads & a galvanic cell is created).
Is it common to have cast iron fittings in a water system which is open to the atmosphere? I was under the impression that cast iron will rust and corrode if it is exposed to oxygenated water.
Any experts out there? Thanks in advance.