Dielectric Flange 2 1/2 in Female Solder Copper Silicone Alloy 7 in 2 1/2 in Male Solder Copper Silicone Alloy 7 in Number of Bolt Holes 4 Brass 175 psi Maximum Operating Pressure Insulator Material Polysulfone Includes Fasteners Yes 33 Degrees to 180 Degrees F