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Commercial Building Controls : Valves and Valve Actuators : Valve Actuators : ML6421/ML7421 : ML7421B1023

Non-spring return direct-coupled Valve Actuator with 405 lbf rated force

Overview

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 control 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

• Easy and quick 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
• High force for VGF Pressure-balanced valves
• No separate linkage required
• Conduit connector standard
• No adjustments required on linkage
• Accurate valve positioning
• Low power consumption
• High close-off ratings
• Force limiting end switches
• Manual operator
• Synchronous motor
• Maintenance free

Product Specifications

Application

HVAC

Dimensions (in.)

12 3/4 in. high x 7 in. wide x 7 in. deep

Dimensions (mm)

326 mm high x 178 mm wide x 178 mm deep

Includes

1/2 in. flexible conduit adapter; 1/2 in. conduit hub

Weight (lb)

5.1 lb

Weight (kg)

2.3 kg

Materials

ABS Plastic

Item Type

Product

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, CSA

Certified

Electrical Connections

Screw terminals

Operating Humidity Range (% RH)

5 to 95% RH

Supply Voltage

24 Vac +10%, -15%

Power Consumption

Driving-- 12 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

Class I Insulation (24 Vac),IP54

Internal Auxiliary Switch

0

Fluid Temperature (C)

150 C Maximum

Fluid Temperature (F)

300 F Maximum

Actuator Type

Valve

Control Signal

0 to 10 Vdc; 2 to 10 Vdc

Fail Safe Mode

Stays in place

Torque Rating (lb-in.)

405 lbf

Torque Rating (Nm)

1800 N

Switches

Yes

Stroke (in.)

1 1/2 in.

Stroke (mm)

38 mm

Cable

Two knockout holes for 1/2 in. conduit standard on actuator case

Timing, Nominal

Driving @ 60 Hz-- 175 sec

Feedback

2-10 Vdc

Manual operation

Knob

Category	Commercial Building Controls
Manufacturer	HONEYWELL
Product	Valves and Valve Actuators
Style	Valves and Valve Actuators

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