This 1 inch lead free dielectric union is used in residential and commercial applications to prevent accelerated corrosion and deterioration in the piping system due to galvanic and stray current. It is installed between pipes made from dissimilar metals and is used on applications such as hot water storage tanks, water and air conditioners, steam, processing tanks, gas, and water piping. It consists of a female iron pipe thread to female iron pipe thread (black) connections, two tailpieces, union nut, and a Buna-N gasket that separates the tailpieces to prevent an electric current from occurring. The maximum temperature is rated up to 180 degrees F (82 degrees C) at 250 PSI (17.2 BAR).