I've read here that a dielectric union is always required when joining iron pipe to copper pipe. My hyrdronic (baseboard) system is entirely copper except for the pipes at the boiler which are iron. The transition to copper is done with copper (or brass) fittings mated with iron fittings. No dielectric unions.
I know the water in a closed hydronic system becomes less aggressive over time but does that also mean that dielectric unions are not necessary? Thanks!
I know the water in a closed hydronic system becomes less aggressive over time but does that also mean that dielectric unions are not necessary? Thanks!