The Emerson C200-06400420A is a Bettis C-Series pneumatic scotch yoke actuator. Designed for reliable quarter-turn valve automation, it converts pneumatic pressure into rotary motion to operate ball valves, butterfly valves, and plug valves in industrial applications such as oil and gas, chemical processing, water treatment, and power generation. The "064" torque code indicates approximately 6,400 in-lb output torque, suitable for larger valve applications requiring higher breakaway torque.