Dielectric Unions are used in commercial and residential applications to prevent accelerated corrosion and deterioration in the piping system due to galvanic and stray current. These plastic insulators fit the outside piece of a dielectric union and separate the galvanized steel nut and brass sweat connection to prevent galvanic corrosion. They are made of nylon and are available in multiple sizes.
- Nylon insulator
- Dielectric unions sold separately