Schedule 40 Socket Weld Flange Raised Face 2 in Nominal Pipe Size Flanged x Socket Weld 6 in Flange Outside Diameter 3/4 in Flange Thickness 1 in Overall Length Stainless Steel 304/304L Class Class 150 275 psi Maximum Operating Pressure 150 psi Max Steam Pressure Number of Bolt Holes 4 4 3/4 in Bolt Circle Diameter 3/4 in Bolt Hole Diameter