Honeywell ML6421, ML7421 Non-Spring Return Electric Linear Valve Actuators Model HONEYWELL ML6421A3005 NON-SPRING RETURN ELECTRIC LINEAR VALVE ACTUATOR (24VAC, 50/60HZ) APPLICATION The ML6421A,B Non-Spring Return Electric Linear Valve Actuators are suitable for use with low-voltage, single-pole double-throw (spdt), Series 60 two-position and floating controllers. These actuators operate standard Honeywell valves in heating, ventilating, and air conditioning (HVAC) applications. The ML7421A,B Non-Spring Return Electric Linear Valve Actuators are modulating control actuators used with controls that provide an analog output of 0 to 10 Vdc or 2 to 10 Vdc. These actuators operate standard Honeywell valves in HVAC applications. An internal selector plug can be used to reverse the direction of action. FEATURES • Quick and easy installation. • No separate linkage required. • 3/4 in. (20 mm) stroke on ML6421A and ML7421A. • 1-1/2 in. (38 mm) stroke on ML6421B and ML7421B. • No adjustments required. • Accurate valve positioning. • Low power consumption. • Selectable 0(2) to 10 Vdc or 0(4) to 20 mA input signal with ML7421. • Position feedback with ML7421. • High close-off ratings. • Direct/reverse acting with ML7421. • Force-limiting end switches. • Manual operator. • Synchronous motor. • Corrosion-resistant design. • Maintenance free. • Conduit connector knockout.
read more
