Do I really need magnetic dirt separation in my hydronic ...
· Do I really need magnetic dirt separation in my hydronic system? Almost all hydronic systems have at least one wetted component made of cast iron or steel (pump volutes, expansion tanks, etc.). All hydronic fluids also contain some amount of air and we know when oxygen, water and iron (or steel) come together the result is corrosion (iron oxides), some of which is magnetite .