Slip-On Flange Flat Face 1 1/2 in Nominal Pipe Size Flanged x Slip-On 5 in Flange Outside Diameter 11/16 in Flange Thickness 5 in Overall Length Aluminum Class Class 125 For Pipe Schedule 40 125 psi Maximum Operating Pressure 185 psi Max Steam Pressure 0 Degrees to 270 Degrees F Number of Bolt Holes 4 1/2 in Bolt Hole Diameter