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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: Octopus
  • Model Number: OCT-BD
  • Type: HVAC Systems
  • Product Name: Octopus Volume Control Butterfly Air Damper for Duct
  • Brand: Octopus
  • Material: Galvanized steel
  • Size: Available in Special Sizes Upon Request
  • Item Number: OCT-BD
  • Packing: By Box
  • Certifitate: ISO 9001:2008
  • Shape: Round
  • Color: Silver
  • Port: China

Packaging & Delivery

Packaging Details Carton package; Seaway by Container; Packing in containers
Delivery Time Based On Quantity


Round butterfly HVAC air duct damper



· Air Volume Damper

Used for control of flow rate and pressure in ventilation ducts. Opposed blades in damper have aerodynamic structure that has the property of reducing the air friction. Flow rate is adjusted with metal command handle according to the OPEN - CLOSED and interval values that are written on the handle. Also, rubber seals are put between the blades for impermeability.




  1. material: Aluminum with powder coated or anodized, galvanized steel
  2. Size:  Neck size can be adjusted as customers' requirements
  3. Color: White; we can also follow customers requirements.
  4. Dampers can be installed so as to adjust airflow
  5. Excellent appearance, fit for supply airflow.

The multiplayer cone divided the air into many layers of swift puffs, quickly mixing the inlet air and interior together


The outside frame and the inside vane of the cone are of detachable structure, easy to install and adjust.


  • Butterfly Damper

Adjust the air flow exactly

The terminus parts for central air-conditioning

Flexible running

Low noise

Low leakage

Credible structure



Item No.

Dia (mm)




By box





Other sizes are available upon required.





·About us :


Octopus Metal Co., Ltd is the leading HVAC Ductwork manufacturer in China. Our annual processing capacity reaches 120 000 tons (1.5 million M2).



We operates 4 efficient production sites for galvanized rectangular air duct manufacture. Our duct works are certified by China National Accreditation Service for Conformity Assessment (CNAS).





·ISO Certificate :




·Our Workshop :




· HVACDuct & Accessories Certificate :




·Our Product :




·Global Expo :



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