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“.
Dimensions in mm
* Above DN 600 dimension C1 is to be specified by the purchaser.
** For flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter.
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.