Motorized HVAC Damper – Normally Closed

4.60
20 Customer Reviews
SKU ADC

Price range: $199.95 through $289.95

- +
Add to Quote

The FAMCO Difference

  • Quality constructed in 28 gauge Galvanized steel
  • Comes in a range of diameters: 4 inch, 5 inch, 6 inch, 7 inch, 8 inch, 10 inch, 12 inch, and 14 inch
  • Made with 24 volt or 120 volt motors
  • End switches are available with all models

Download the Product Specs .PDF

Shipping & Returns

Estimated Arrival: Tue. Jan 27th - Tue. Feb 3rd.

iDelivery dates provided are an estimate and are subject to change without notice.

Secure Payments

Free Shipping

Returns up to 30 days

Description Product Specs Q&A Product Reviews Related Products
Description

The FAMCO ADC Motorized HVAC Damper - Normally Closed is normally closed with a power open and spring return motor assembly. The ADC is made with 24 volt or 120 volt motors. End switches are available with all models. End switches allow another appliance to be operated when the damper has reached its full power (either open or closed). The floating motor mount assures proper alignment of motor, shaft and damper to prevent binding, while the clutch/coupler reduces the number of moving parts for greater service life. All units without the end switch come with a flow control adjustment so that the damper blade can be blocked from opening or closing 100%. (Note: the end switch will not work if the flow control adjustment is preventing the damper from reaching it's full potential.) This product is not rated for use in dryer ventilation, as it could trap lint and pose a fire risk. Quality constructed in 28 gauge galvanized steel.

The FAMCO ADC Motorized HVAC Dampers come in a range of diameters: 4 inch, 5 inch, 6 inch, 7 inch, 8 inch, 10 inch, 12 inch, and 14 inch. The FAMCO ADC Motorized HVAC Damper is manufactured by FAMCO in the United States and comes with a 1-year warranty against product defects and workmanship. If you have any questions about this product, please refer to the FAQs above or feel free to contact us.

Resources

Product Specs

Product Details
Application

Bathroom Fan, Forced Exhaust, Forced Intake, In-line / HVAC / Ductwork, Kitchen Fan, Range Hood

Reviews (20)

20 reviews for Motorized HVAC Damper – Normally Closed

4.60

Based on 20 customer reviews.

1-5 of 20 reviews
5 Stars65%
4 Stars30%
3 Stars5%
2 Stars0%
1 Star0%

  1. Extremely quiet operation – but pricey. It has a ground wire – but the other two wires don’t differentiate between hot or neutral. All in all, I appreciate the availability of item. Curious to see its longevity (China motor).

    T N. —
    4.0
  2. Anonymous —
    5.0

  3. Difficult to attach to my vent pipe. Little to small to fit over the female end and to big for the male end. I had to drill out rivets for the female end and add a sleeve for the male end. Something other than just loose wires on the 24VAC model would be nice as well. In the end it worked.

    Joe —
    4.0
  4. Aaron —
    5.0

  5. A little pricey but high quality as always, I’m a returning customer & 43 years in the HVAC & R industry.

    Rick L. —
    3.0
Back to Reviews
You must be logged in to post a review Log In

Questions & Answers (6)

Questions and answers of the customers

    What's the current draw of the ADC8120?
  1. Q What's the current draw of the ADC8120?
    Asked on May 19, 2021 6:45 am
    A

    All of our 120v motors will have a power draw of 0.08 current amps, while our 24v motors will be 0.36 current amps.
    2. What is the current draw on ADC424?
  2. Q What is the current draw on ADC424?
    Asked on February 16, 2021 5:26 pm
    A

    The current draw on our 24 volt motors is 0.36 amps. 
    3. What is the Max CFM that the damper can hold back ( I'm looking at a 10" normally closed , power open )
  3. Q What is the Max CFM that the damper can hold back ( I'm looking at a 10" normally closed , power ...... Read more
    Asked on January 22, 2021 7:39 pm
    A

    We do not have CFM ratings data for this product at this time.
    4. Is there a inner flange to support the foam seal or is the inside of the pipe basically smooth except for the shaft penetrations and swages on the ends?
  4. Q Is there a inner flange to support the foam seal or is the inside of the pipe basically smooth ex...... Read more
    Asked on December 23, 2020 8:23 am
    A

    No, there is no flange, the foam gasket is adhered directly to the inside walls of the tube.
    5. What is meant by "End Switch"?
  5. Q What is meant by "End Switch"?
    Asked on November 30, 2020 12:06 pm
    A

    Our end switch is a physical limit switch built into the bracket that will only activate when the damper is in the fully powered position - this switch has lead wires for connecting to an additional appliance, like an inline fan, that you would only want to power on after the damper is fully powered.
    6. How do I specify Normally Closed on my order?
  6. Q How do I specify Normally Closed on my order?
    Asked on November 30, 2020 12:05 pm
    A

    We have separate product pages for our normally open and normally closed dampers, so if the product description on the page says "normally closed", then you are ordering the correct damper.

Related products