Threaded Flange Raised Face 3 in Nominal Pipe Size Flanged x FNPT 10 1/2 in Flange Outside Diameter 1 7/8 in Flange Thickness 10 1/2 in Overall Length Steel Black Coated Class Class 1500 For Pipe Schedule XXH 3 600 psi Maximum Operating Pressure 3 600 psi Max Steam Pressure 80 Degrees to 780 Degrees F Number of Bolt Holes 8 1 1/4 in Bolt Hole Diameter