The FKX 9000 is a triple-offset butterfly valve that controls flow, optimizes flow coefficients, and maintains a low pressure drop in critical process applications. It is bubble-tight in accordance with American Petroleum Institute (API) 598 and 6D, offering zero-leak shutoff in high-temperature applications, hydrocarbon service, and emergency shutdown service. An optimized seat angle and cobalt-chromium alloy valve body seat extend the life of the seal and improve abrasion resistance. The stem seal controls fugitive emissions under recurring and extreme thermal cycling, reducing potential downtime. Unlike position-seated ball, butterfly, or plug valves, this torque-seated valve self-adjusts to evenly distribute seal compression to eliminate binding and improve performance.