This diagram illustrates the arrangement but not necessarily the correct number of bolt holes. Refer to the column 'Bolting Number' in table for actual number. NOTE 1: Dimensions N1, N2 and N3 are measured at the intersection of the hub draft angle and the back face of the flange. NOTE 2: For d1 dimensions see document "Flange facing according to EN 1092-1".
NOTE: The p/t ratings from EN 1092-1 apply only for flange types 05, 11, 12, 13 and 21 having nominal sizes up to and including DN 600. The p/t rating of all other flanges shall be agreed between the manufacturer and the purchaser