Process Tee Dampers

Kono Kogs offers custom design and fabrication of process diverter dampers and tee dampers (aka T-dampers, bypass dampers) for use in ductwork systems. These dampers simply divert the flow of air to another direction with opposing damper blades. When needed, an additional trim damper blade is provided to balance system flow. The primary use for these dampers is handling airflow emissions directed to industrial oxidizers. We also provide comprehensive industrial damper repair, rebuild & maintenance services, along with custom ductwork design, fabrication and installation.

See how we fabricated and installed ductwork & diverter dampers to accommodate a facility expansion for a cabinetry laminate supplier.

Diverter Damper Custom Design and Fabrication

Kono Kogs has decades of experience fabricating metal components required to rebuild and refurbish thermal oxidizer systems and began fabricating tee dampers (RTO dampers) in 2020 to meet our need for quality and lead time compression. We now provide our diverter dampers to a variety of industries looking for custom-built, cost-effective process air diverters.

Every damper is thoroughly tested, calibrated and set up before it leaves our facility.

Quality-built process air diverters fabricated by Kono Kogs in Green Bay, Wisconsin.

Save Money with Used Diverter Tee Damper from Kono Kogs

Kono Kogs also sells used (fully refurbished) tee dampers, which can save 40-60% compared to new.

Contact our team today for a competitive quote and expert assistance.


Industrial Damper Features

We take pride in building diverter tee dampers the right way: with a heavy walled body, and reinforced damper blades. Proper design and materials are essential to achieve a tight shutoff of process air for efficient operation and equipment lifespan.

Standard Specifications:

  • Sizes from 10” to 60”
  • Horizontal (thru to oxidizer) or vertical (thru to atmosphere) orientations
  • Carbon steel wall body thickness up to .19” with flanged connections
  • Process air temps up to 750°F standard
  • Pressure up to 1PSI & 4000 FPM process air standard (higher available)
  • 99% shut-off @5” W.C.
  • Three C-1018 thru shafts (3/4″ to 2″ diameter)
  • Single 2000+ inch-lb. torque actuator for powerful sealing
  • Carbon steel slave linkage with single actuator for cost efficiency
  • Metal-to-metal blade seats (no gasket) for precise air control and less leakage
  • Manual balancing damper for oxidizer-connected ducting
  • Actuator mounting bracket with heavy-duty Triac® electric direct-drive actuator with internal limit switches
  • Grease-lubricated ball bearings mounted on stand-offs over adjustable packing glands (bearing stand-offs accept optional 3” insulation and cladding)
  • Fully configured with end-of-travel limit switches, two auxiliary limit switches & manual (locking) trim damper

Optional features:

  • Weatherproof tie-off/setup wiring enclosure mounted to tee damper for ease of installation and local actuator setup
  • 3” insulation and cladding
  • Tadpole seat seal option
  • Round (standard), square, or rectangular ducting
  • Manual, or pneumatic actuation with spring return and failsafe

Special configurations and material construction available upon request.

Tee diverter damper with actuator installed in an RTO system
Tee diverter damper with actuator installed as part of an RTO system.
Custom fabricated process diverter tee dampers
Process diverter tee dampers fabricated by Kono Kogs.
RTO ductwork on rooftop installed by Kono Kogs
Turnkey installation by Kono Kogs included RTO ductwork on rooftop.
Printing Press Interconnecting Ductwork by Kono Kogs
Printing Press Interconnecting Ductwork by Kono Kogs.
Process Ductwork through Roof by Kono Kogs
Process Ductwork through Roof by Kono Kogs.
Process Ductwork & T-Damper by Kono Kogs
Process Ductwork & Diverter T-Damper by Kono Kogs.
Completed Ductwork & RTO Installation by Kono Kogs
Completed Ductwork & RTO Installation.

The Industry’s Best Diverter Tee Dampers are made by Kono Kogs

Kono Kogs has been helping companies of all sizes solve emission control problems since 1996. We’ve earned a reputation as a trustworthy and reliable supplier, and our team has a 100% success rate in meeting performance guarantees for every refurbished oxidizer system we sell. We apply the same attention to detail and flawless execution to our industrial damper manufacturing process.

Manual trim damper
Manual trim damper
Torque actuator installed
2000+ inch-lb torque actuator
Tee damper ball bearings
Robust ball bearings
Image of diverter damper blades
Reinforced damper blades; metal to metal seats
Outdoor installation of insulation and cladding for diverter damper
Optional insulation & cladding
Diverter damper with painted carbon steel body
Painted carbon steel body
Example of a used t-damper
Used T-damper inventory
Stainless steel T-damper
Stainless Steel Diverter Tee Damper
T-damper/Diverter damper
Stainless steel t-damper with internal view of damper blades

To see more of our work, visit the project gallery on our fabrication & assembly page.

Kono Kogs designs and manufactures heavy-duty industrial control dampers for use in industrial process air systems such as thermal oxidizers, regenerative thermal oxidizers (RTO) and catalytic oxidizers. Located in Wisconsin, we serve customers nationwide and around the world.

Contact our team to request a quote on a new or used bypass damper for your project.

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