Butterfly Dampers

Our most economical and best selling dampers

Kelair's Butterfly Dampers can be used in a wide range of applications

Kelair’s Butterfly dampers were developed in response to our customers’ desire for an economical industrial damper which could be used in most applications. Appropriate for flow control and low leakage in systems that regulate clean air, gas or light particulate, Kelair’s Butterfly dampers can also be engineered to process highly corrosive, abrasive or high heat air flows. These types of dampers can be a cost-effective means to control and isolate in air duct systems.  Kelair’s Butterfly dampers are applicable for open-closed service or flow control balancing. Discover the variety of industrial-grade damper products available at Kelair

*Operational testing and calibrating are completed at the factory prior to installation.

What is a Damper?

Product Specifications & Features

  • Sizes: 6″ to 144″
  • Process Temperature: up to 2200° F
  • Configurations: round, square, & rectangular
  • Construction: S.S. or painted C.S. (others available upon request)
  • Shutoff: up to 99%
  • Seal Options: tad pole, metal seat, swing-thru; control & balancing
  • Actuation: manual, electric, pneumatic (spring return and failsafe available)
  • Modulation: open/closed or modulating
  • Pressure: up to 1-PSI & 4000 FPM process air (higher available upon request)
  • Ball bearings and shaft packing glands standard up to 400°F
What is a Damper?

Other Dampers from Kelair Products

Butterfly Dampers

Butterfly Dampers

Butterfly dampers used by Kelair have the simplest design and the fastest turnaround. They are the economical choice for applications ranging from light duty to heavy duty and low temperature to high temperature.

Louver Dampers

Louver Dampers

Kelair's Louver Dampers are applicable for both light, and heavy-duty industrial ventilation for high volume flow control, and isolation applications. This damper modulates the flow of air and gas in dry or wet conditions or can shut them off altogether.

Slide Gate / Guillotine Dampers

Slide Gate / Guillotine Dampers

These types of slide gate or guillotine dampers are used primarily as shut off devices. Kelair's rugged, heavy duty designs are available round or square with sizes from 4" up to 96" making them an ideal solution for industrial applications.

Diverter & Tee Dampers

Diverter & Tee Dampers

Diverter Dampers or Tee Dampers are used to redirect air stream from one outlet to another. These types of dampers are widely used in incineration systems to divert process air and gas to the incinerator or by-pass to the atmosphere.

Refractory Dampers

Refractory Dampers

Kelair’s Refractory dampers are manufactured to withstand temperatures up to 1900 F in corrosive, particulate and/or process gas environments. This unique design helps reduce heat loss and provide erosion protection for the frame.

Inlet Vane Dampers

Inlet Vane Dampers

Inlet Vane Dampers work with fans and blowers to enhance their performance by controlling air volume and fan shut-off. Kelair’s design boasts no external linkage, eliminating pinch points and damage to the assembly.

Backdraft Dampers

Backdraft Dampers

Kelair’s Backdraft dampers are engineered to allow airflow in one direction and prevent reverse airflow. Backdraft dampers control airflow in ventilation systems either to modulate or to shut off moving air through a fan opening when it is turned off.

Stack Cap Dampers

Stack Cap Dampers

Kelair's Stack Cap Dampers isolate the stack opening to prevent foreign material from entering and conserve warmth when the stack is shut down. The dampers deliver accurate airflow and isolation at high temperatures, reducing the stack effect.

Find a Kelair Rep

Our Manufacturer Sales Representatives across the country or our factory sales personnel will be pleased to discuss your specific application and available options with you.

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