Rings are used
1) When flanges are not sufficiently thick for tapings.
This Carrier Ring is made fromsolid one piece,Orifice
plate is part of this carrier Ring.Tapping position is fixed
at the time of manufacturing and can not be changed
afterwards.These are manufactured for line size 15NB on
wards. Tap type is corner tap.
2) On Lined Pipe Lines
3) Used with composite flanges
4) Where pipe tapings are not practical