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Honeywell ML7984A4009 Valve Actuator. The ML7984 is a self-contained, self-adjusting, motorized linkage that mounts directly onto V5011 two-way or V5013 three-way valves and provides up to 25 mm (1 inch) of linear stem travel. For use with Series 70 2-10Vdc, 4-20mA; Series 90 135 ohm; and Electronic (Super Mod) modulating signals controllers. Allows the use of one common transformer power supply for multiple actuators and controllers. Self-contained, motorized valve linkage. Linkage self-adjusts to valve stroke from 12 to 25 mm (1/2 - 1 inch). Multi-pose mounting. Strong valve seat closing force 160 lbf (710 N). Compact size for easy installation in confined area. One device for either Vac or Vdc power supply application. Electronic current sensing provides internal protection and positive full closing force. Field-addable position feedback/auxiliary switch module available (5-wire control wiring only). ML6984 models are compatible with 3-wire control systems. Replaces the following: ML7984A3019, ML7984A1006