Threaded Flange Raised Face 1 1/2 in Nominal Pipe Size Flanged x FNPT 6 1/8 in Flange Outside Diameter 7/8 in Flange Thickness 6 1/8 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 4 3/4 in Bolt Hole Diameter