Triple Offset Butterfly
Triple offset butterfly valves have three offsets, the third offset creates a type of cone shape of the disc and seat. This cone angle, along with the two eccentric shaft offsets, allows the disc to seal against the seat with no friction. This seat design also allows for uniform sealing, and thus a tight shutoff in a metal seat design.
High Pressure Steam, Superheated Steam, High Temperature Gases & Oils, & More.