dielectric fitting

dielectric fitting

dielectric fitting
In a water supply system, a special type of adapter (such as a union) used to connect a pipe containing copper with a pipe containing iron; used between dissimilar metals
References in periodicals archive ?
Dielectric fitting parameters and calculated rigid amorphopus fraction of the neat PLA and its nanocomposites.
If you have galvanized steel pipe and must make a transition to copper, install a special dielectric fitting (about $5; Photo 5) to prevent corrosion.
Then insert a dielectric fitting (Photo 5) and convert to copper pipe and fittings all the way back through to the sill cock.
5 DISASSEMBLE the dielectric fitting and solder one end to a 6-in.
Where connections are made between dissimilar metals, provide dielectric fittings to prevent electrolytic corrosion.
Using different metals in a heating or air-conditioning piping system does not mean that galvanic corrosion will cause a failure, nor does it mean that dielectric fittings must be used at transitions between materials.
For potable water systems, dielectric fittings should be used when connecting hot water tanks and heat exchangers and at-grade penetrations along with lightning protection to protect from external corrosion.
The dielectric fittings commonly available in home centers (top photo) have a (much shorter) plastic nipple that keeps the metals from touching, but the metals are still close enough to cause a reaction and corrosion anyway.