Threaded Flange Raised Face 3/4 in Nominal Pipe Size Flanged x FNPT 5 1/8 in Flange Outside Diameter 1 in Flange Thickness 5 1/8 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 4 3/4 in Bolt Hole Diameter