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Honeywell - ML7174A2001 - DCA 2-10 4-20 24V 90S 70Lbin DCA Damper Honeywell

2-10 Vdc, 4-20 mA Actuator with 70 lb-in., non-spring return, 24 Vac ±20%


Honeywell ML7174 is used to control dampers in HVAC application and for mounting on ball valves. Use with modulating (2-10 Vdc) thermostats or building automation controls



  • Control for air damper applications with up to 20 sq. ft. assuming 35 in-lb per sq. ft. of damper area, velocity independent
  • Control for air damper applications
  • Magnetic coupling eliminates limit switches or mechanical stops by limiting stall torque to 130 lb-in. maximum
  • Includes manual declutch lever and bag assembly with two minimum position setscrews
  • Selectible 45-, 60- and 90-degree stroke in either clockwise or counterclockwise direction
  • Ninety-second timing models for use with pressure independent VAV systems


Customer Rating: Not Rated Yet
Quick Order Number: 512
Manufacturer: Honeywell
Part Number: ML7174A2001/U
Weight: 2.00 lbs
Stocked Item*: Yes
Quantity Available*: 1
Price: $215.59

* If an order is placed where the item is a "Non-Stocked Item" or the quantity ordered is more than the quantity available, all items in stock will be shipped and the remainder of the items will be shipped as soon as we get the "backordered" items in.


Product Specifications


Product Specifications

Dimensions (in.)
5.55 in high x 3.39 in wide x 3.0 in deep
Dimensions (mm)
141 mm high x 86 mm wide x 76 mm deep
4074ENY Bag Assembly
Weight (lb)
2.4 lb
Weight (kg)
1.1 kg
Steel plate and Plenum rated plastic
Direct Coupled
50 Hz; 60 Hz
Approvals, Underwriters Laboratories Inc.
UL873, Plenum Rated
Electrical Connections
Screw terminals
Operating Humidity Range (% RH)
5 to 95% RH, non-condensing
Supply Voltage
24 Vac ±20%
Power Consumption
Driving-- 5.4 VA
Shipping and Storage Temperature Range (F)
20 F to 130 F
Shipping and Storage Temperature Range (C)
-18 C to +54 C
Approvals, Canadian Underwriters Laboratories Inc.
cUL C22.2 No. 24-93
Ambient Temperature Range (F)
20 F to 125 F
Ambient Temperature Range (C)
-18 C to +50 C
Environmental, Electrical or Ingress Protection Rating
Internal Auxiliary Switch
Maximum Noise Rating
Driving (dB(A) @ 1m)-- 45
90 degrees
Shaft Dimensions (in.)
3/8 to 1/2 in. square or round
Actuator Type
Control Signal
2-10 Vdc; 4-20 mA
Fail Safe Mode
Non-Spring Return
Torque Rating (lb-in.)
70 lb-in.
Torque Rating (Nm)
8 Nm
Additional Torque Ratings (lb-in.)
Maximum Stall-- 130 lb-in.
Additional Torque Ratings (Nm)
Maximum Stall-- 15 Nm
External Auxiliary Switches Available
Yes, 201052B
Rotation to Open
By switch
Rotational Stroke Adjustment
Mechanically limited at 45 or 60 degrees in CW or CCW directions
Timing, Nominal
Driving @ 60 Hz-- 90 sec
Shaft Adapter Type
Aluminum Hub, two set screws
Manual operation
Declutch mechanism
Shaft Dimensions (mm)
10 to 13 mm square/round
Spring Return Direction
Stem down on power failure
Input Impedance
45K ohm (2-10 Vdc signal), 536 ohm (4-20 mA signal)




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