Honeywell offers a complete line of spring-return and nonspring-return, foot-mounted actuators for service and retrofit applications to provide two-position, SPDT floating, or modulating control of globe valves and HVAC dampers. Direct-coupled actuators are easy to install with a self-centering shaft adapter that provides mounting flexibility and a greater clamping force. Spring return and nonspring-return direct coupled actuators are used in HVAC systems to drive a variety of quarter-turn, final-control elements. The easy-to-install universal replacement fire and smoke actuator delivers fast-acting damper close off with flexible mounting options.