The Fisher 1061 actuator is used to operate splined shaft rotary control valves, such as Fisher Vee-Ball™ valves, eccentric disk valves, and Butterfly valves. The actuator/valve body linkage of this actuator can be positioned for either push-down-to-open or push-down-to-close action. Additionally, the 1061 actuator can be used with a two-position control signal for on/off service or with a valve positioner for throttling service.