Slip-On Flange Raised Face 1 1/2 in Nominal Pipe Size Flanged x Slip-On 6 1/8 in Flange Outside Diameter 3/4 in Flange Thickness 6 1/8 in Overall Length Steel Black Coated Class Class 300 For Pipe Schedule 80 725 psi Maximum Operating Pressure 725 psi Max Steam Pressure 80 Degrees to 780 Degrees F Number of Bolt Holes 4 3/4 in Bolt Hole Diameter