Actuators are used to control and operate dampers
Kelair furnishes electric, pneumatic and manual damper actuators on all of our custom engineered products. The electric and pneumatic actuators can be either 2 position control or modulating control. Additionally, the damper actuators can be ordered in four ways:
- Factory installed and ready to operate
- Shipped with the damper unattached for field installation
- Shipped directly to the job site for field installation
- Factory mounted and tested, custom supplied actuator packages
Pneumatic and electric for easy connectivity and flexibility
Pneumatic damper actuators are multipurpose positioning mechanisms used to accurately position industrial dampers in response to output signals of a pneumatic controller or electro-pneumatic transducer. They have high power to size ratios in confined spaces and flexible mounting configurations.
Electric damper actuators provide easy connectivity to digital controllers. The voltage source must be selected and typical voltages for these devices are: 24 VDC, 120 VAC or 240 VAC. All Kelair’s electric actuators are compact in size and easily installed. We will work with your specifications or we will readily determine the best damper operator to fit your specific application. All of our damper actuating packages will come prewired, pre-piped, calibrated and fully tested.
Electric & Pneumatic Damper Actuator Specifications & Features
Electric Damper Actuator
- ISO 5211 Mounting
- Wormgear drive for longer life and low maximum noise level of 50db
- Standard Enclosure IP-67, NEMA 4, 4X
- 20 Watt internal heater to minimize condensation due to temperature and humidity changes
- Squirrel cage, totally enclosed motor
Pneumatic Damper Actuator
- Available in double acting or spring return
- ISO 5211 mounting
- High cycle life with low friction bearings on all moving and sliding surfaces
- Modular design utilizing the same body and end caps for both double-acting and spring-return versions.
- Corrosion Resistant with PTFE coated body, polyester coated end caps and stainless steel fasteners
- Safety contained springs prevent hazards of inadvertent ejection during maintenance
- Optional mounting kits to cover any application and replacement of the obsolete unit
Manual Damper Actuator Specifications & Features
Kelair Offers three types of manual damper actuators:
- Lever & Quadrant:
- This type of damper actuator has a manual lever with a locking quadrant. The Lever allows for easy and precise adjustment. The locking quadrant is a threaded handle and clamp style for secure locking.
- Gear Operator Handwheel:
- This actuator is composed of an industrial worm gear operator that is a quarter- turn, self-locking type. The handwheel is 12 inches and there is a 30:1 gear ratio for easy operations
- Gear Operator & Chainwheel:
- This manual actuator is the same as above, but with a chain wheel & chain drop at a distance, in place of a hand wheel for remote operation. The chainwheel and chain drop at distance per customers specifications.
Butterfly dampers 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.
Kelair's Louver Dampers are applicable for light duty industrial ventilation to heavy duty, high volume flow control and isolation applications. Parallel or opposed blade, outboard bearings and linkage, adjustable packing glands and double skin airfoil vanes are all standard on louver dampers from Kelair.
Slide Gate / Guillotine Dampers
These types of slide gate or gullotine 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.
Diverters & Tee Dampers
Diverter Dampers also called Tee Dampers are used to redirect air stream (hot gas or otherwise) 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.
Kelair’s Refractory dampers are manufactured to withstand temperatures up to 1900 F in corrosive, particulate and/or process gas environments. Refractory dampers from Kelair help reduce heat loss to surroundings and provide erosion protection for the frame.
Inlet Vane Dampers
Inlet Vane Dampers work with fans and blowers to enhance their performance by controlling air volume and fan shut-off. They can be mounted to the fan inlet to conserve power at reduced airflow. These types of dampers reduce fan pressure without reducing speed. Kelair’s design boasts no external linkage, eliminating pinch points and damage to the assembly.
Kelair’s Backdraft dampers are engineered to allow airflow in one direction and prevent reverse airflow. They are typically wall or roof mounted and applied to mechanical HVAC ventilation systems. 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. Backdraft dampers can utilize pneumatic or electric actuators or be gravity controlled.
Stack Cap Dampers
Stack Cap Dampers or Stack Isolation Dampers both isolate the stack opening to prevent foreign material from entering when not in use and conserve warmth when the stack is shut down or during maintenance. Kelair’s Stack Cap dampers deliver accurate air flow and isolation at high temperatures and high volumes, reducing the stack effect when offline thereby protecting ductwork from the elements.