"Actuators designed for continuous, fine-tuned positioning rather than simple open/closed operation, used in throttling and control-valve duty."
"Instrumentation devices that regulate pressure, control flow, and filter contaminants in pneumatic and hydraulic control systems."
"Accessories that adapt or extend manual and gear-operated valve actuation."
"Control-room hardware and communication systems that let operators monitor and command multiple valve actuators from a central point."
"Gear operators used with actuators or handwheels on valves that need many turns to fully open or close, such as gate valves."
"Gear operators used with actuators or handwheels on quarter-turn valves such as ball, butterfly, and plug valves."