Flange, Raised, 3 in Nominal Pipe Size, Flanged x Blind, 8 1/4 in Flange Outside Diameter, 1 1/4 in Flange Thickness, 8 1/4 in Overall Length, Steel, Not Applicable, Class Class 600, For Pipe Schedule Schedule 80, 1, 450 psi @ 72 Degrees F Maximum Operating Pressure, 1, 450 psi Max. Steam Pressure, 80 Degrees to 780 Degrees F, Number of Bolt Holes 8, 6 5/8 in Bolt Circle Diameter, 3/4 in Bolt Hole Diameter