Threaded Flange Raised Face 2 1/2 in Nominal Pipe Size Flanged x FNPT 7 1/2 in Flange Outside Diameter 1 1/16 in Flange Thickness 7 1/2 in Overall Length Steel Black Coated Class Class 600 For Pipe Schedule 80 1 450 psi Maximum Operating Pressure 1 450 psi Max Steam Pressure 80 Degrees to 780 Degrees F Number of Bolt Holes 8 3/4 in Bolt Hole Diameter