Series LF3100 Lead Free* Dielectric Flanged Pipe Fittings are used in commercial and residential 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 features an iron pipe thread to copper solder joint connection. It consists of a flange fitting and a gasket. Series LF3100 is ideal in applications such as hot water storage tanks, water and air conditioners, processing tanks, steam, gas, and water piping. Maximum Pressure: 175psi.