Vortex Dampers

ProcessBarron’s vortex dampers (variable inlet vane dampers, VIV) boost fan efficiency by spinning incoming air or gas in the direction of the fan wheel. Designed for flue gas applications under 500°F, they are available in cantilevered blade and center hub support designs to fit your system. Engineered for precise airflow control and long-term performance, these dampers optimize industrial fan and draft system efficiency.

Product Description

ProcessBarron’s vortex dampers, also known as variable inlet vane (VIV) dampers, are engineered to improve industrial fan efficiency and airflow control by spinning incoming air or flue gases in the direction of fan wheel rotation. Commonly used at fan inlets handling flue gases below 500°F, these dampers optimize fan performance, reduce energy consumption, and extend the life of fan components.
These dampers eliminate the center bearing hub, reducing airflow resistance and increasing blade longevity. Aerodynamically shaped blades minimize airflow resistance at all positions, while integral inlet cones allow precise pre-spinning of air directly into the fan eye for accurate airflow control. Cantilevered designs are compatible with single or double inlet fans, and housings with 180° bolted splits enable installation on existing fans without removing the rotor assembly. Blade shaft bearings and operating linkages can be serviced in place, simplifying maintenance and reducing downtime.

Center Hub Vortex Dampers are designed for clean air applications operating at high static and velocity pressures. The center hub incorporates high-strength, self-lubricating spherical sleeve bearings for maintenance-free, long-lasting operation. Like cantilevered designs, the housing can be split 180° for easy retrofit installation on existing fans.

ProcessBarron manufactures and assembles all vortex dampers in-house, ensuring precision engineering, rigorous quality control, and optimal performance. Our experienced field service team provides turnkey installation, inspection, maintenance, and troubleshooting for both new and existing dampers, helping operators maximize system efficiency and reliability.

Custom-engineered for durability and performance, ProcessBarron vortex dampers enhance industrial fan operation, optimize airflow, and minimize energy loss. Whether your system requires corrosive gas handling, high-temperature airflow, or clean air pre-spinning, our vortex dampers deliver long-lasting, efficient, and maintainable solutions for industrial ventilation and process systems.

Related Products & Services

Butterfly Dampers

Butterfly Dampers

Flow Diverters

Flow Diverters

Goggle Valves

Goggle Valves

HSRG Isolation Doors

HSRG Isolation Doors

Louver Dampers

Louver Dampers

Slide Gates and Guillotine Dampers

Slide Gates and Guillotine Dampers

Stack Cap Dampers

Stack Cap Dampers

Industrial Fans
Dampers

(VIV, vortex, louver, guillotine, custom)

Expansion Joints
Dust Collectors
Steam Turbine Skids
Ducts & Stacks
Overfire Air & FGR Systems