Fisher high-performance butterfly valves feature an eccentrically mounted disc and are known for their wide application range and shutoff capability. They are available for a variety of control and isolation service from cryogenic to high temperature and pressure classes to ASME CL2500 and sizes from NPS 2 to 72. High-performance butterfly valves are designed for isolation on/off service, as well as low-tier control. The valves feature keyed, double D, or square valve shafts. Shutoff is provided by a variety of seals which include metal, PTFE and fire-tested and cryogenic.