Schedule 40 Socket Weld Flange Raised Face 2 1/2 in Nominal Pipe Size Flanged x Socket Weld 7 1/2 in Flange Outside Diameter 1 in Flange Thickness 1 1/2 in Overall Length Stainless Steel 316/316L Class Class 300 720 psi Maximum Operating Pressure 300 psi Max Steam Pressure Number of Bolt Holes 8 5 7/8 in Bolt Circle Diameter 3/4 in Bolt Hole Diameter