Dielectric Unions Water Heater

If either the tank nipples or the pipes are galvanized steel however and you are connecting them to copper you must use a fitting called a dielectric union to make the connection.

Dielectric unions water heater.

Copper to the water heater needs either a dielectric union or a brass fitting to make the transition. In combination with dielectric nipp. One half is made of. Separate a 3 4 inch dielectric union into its component halves by unscrewing the central nut.

The gasket is made with silicone rubber and a nylon insert. This fitting is utilized to transition between steel and copper piping with a maximum operating pressure of 250 psi and 180 degrees fahrenheit. Get free shipping on qualified dielectric fitting water heater accessories or buy online pick up in store today in the plumbing department. Dielectric unions were developed for use on electric railway lines and for the underlaying of undersea cables and at about the same time for preventing electrolytic corrosion at the connection of water meters to building water piping.

How to install a dielectric union on an electric water heater 1. Dielectric unions 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. Wrap plumbing tape around the threads of the cold water inlet or the hot water outlet nipple attached to the top. Ron hasil lic 058 160417.

Dielectric unions are used to join pipes made from different metals to prevent accelerated corrosion in the piping system. This video details how to replace the dielectric unions nipples of the water heater that make up the hot and cold connections coming from and going to the wa. Galvanized can be hooked directly to the water heater just fine.