Flange Flat 2 1/2 in Nominal Pipe Size Socket 7 in Flange Outside Diameter 3/4 in Flange Thickness Schedule 80 Class Class 150 For Pipe Schedule 80 CPVC 150 psi Maximum Operating Pressure 210 Degrees F Number of Bolt Holes 4 5 1/2 in Bolt Circle Diameter 11/16 in Bolt Hole Diameter 1 15/16 in Overall Length Gray