I noticed that my electric water heater has the stainless steel flex water lines on it and not the solid copper pipe going to the water heater. They dont thread onto the copper pipe, instead they are attached with compression fittings. Is this setup ok? Just wondering because all the other water heaters I have seen are plumbed with copper pipe. Are the stainless steel flex lines anything to worry about?
Let's score one for Jeff! They are dissimilar metals and that means the copper will dissolve. The stainless steel lines I used to sell were for gas lines while the copper ones are for water. I haven't seen a stainless water line in my carreer; maybe someone needs to bring me up to date.
While we are on the subject, stainless steel comes in varying degrees and much of it will rust under certain conditons. It is made from Iron refined to be steel and add some chrome and molly.
After doing some research, I found out that the brass and the copper will be just fine. Brass is an alloy that has copper as the primary component. Zinc is typically the other significant component. Brass and copper are very compatible.