Enter the bend radius of the toroidal knuckle at the large end.
The Code requires this radius to be no less than 6% of the outside diameter of the head, or less than three times the knuckle thickness (UG-31, (h)).
Enter the bend radius of the toroidal knuckle at the large end.
The Code requires this radius to be no less than 6% of the outside diameter of the head, or less than three times the knuckle thickness (UG-31, (h)).