Honeywell Valve Actuators ML6421A1017, ML6421A3005/U, ML6421B1040, ML6421A3005

ML6421

Honeywell ML6275 spring return direct couple rotary actuator is a floating control motor with electronically isolated feedback potentiometer to operate dampers in HVAC applications.

ML6421A1017

Direct-coupled, linear-stroke Valve Actuator with 405 lbf rated force

ML6421B1040

Direct-coupled, linear-stroke Valve Actuator with 405 lbf rated force

Overview

Honeywell ML6421A, B non-spring return electic linear valve actuators are used with low-voltage, single-pole, double-throw (SPDT), Series 60 two-position and floating controlling. They operatre standard Honeywell valves in HVAC applications.

Features

Quick, easy installation on valves with 1 3/8-in. bonnet and 3/4-in. stroke, or with 1 7/8-in. bonnet and 1 1/2-in. stroke
No required separate linkage and no adjustments required on linkage
High force for VGF pressure-balanced valves
Standard conduit connector
Accurate valve positioning
Low power consumption and high close-off ratings
Force limiting end switches
Synchronous motor

Product Specifications

Application: HVAC
Dimensions (in.): 10 3/8 in. high x 7 in. wide x 7 in. deep
Dimensions (mm): 264 mm high x 178 mm wide x 178 mm deep
Includes: 1/2 in. conduit hub; 1/2 in. flexible conduit adapter
Weight (lb): 5.1 lb
Weight (kg): 2.3 kg
Materials: ABS Plastic
Mounting: Directly on V5011/V5013 Globe Valves and VGF Flanged Globe Valves
Frequency: 50 Hz; 60 Hz
Approvals, Underwriters Laboratories Inc.: Flammability Rating UL94V-5V
Approvals, Canadian Standards Association: Certified
Electrical Connections: Screw terminals
Operating Humidity Range (% RH): 5 to 95% RH
Supply Voltage: 24 Vac +10%, -30%
Power Consumption: Driving-- 11 VA
Shipping and Storage Temperature Range (F): -40 F to +158 F
Shipping and Storage Temperature Range (C): -40 C to +70 C
Approvals, CE: Recognized
Ambient Temperature Range (F): 14 F to 122 F
Ambient Temperature Range (C): -10 C to +50 C
Environmental, Electrical or Ingress Protection Rating: IP54,Class I Insulation (24 Vac)
Internal Auxiliary Switch: 0
Fluid Temperature (C): 150 C Maximum
Fluid Temperature (F): 300 F Maximum
Actuator Type: Valve
Control Signal: SPDT; Two position; Floating
Fail Safe Mode: Stays in place
Torque Rating (lb-in.): 405 lbf
Torque Rating (Nm): 1800 N
Switches: Yes
Stroke (in.): 3/4 in.
Stroke (mm): 20 mm
Cable: Two knockout holes for 1/2 in. conduit standard on actuator case
Timing, Nominal: Driving @ 60 Hz-- 95 sec
Manual operation: Knob

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