OBD Opposed Blade Damper Multi-blade Up To
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continuous

Stainless Steel
Construction
Precision Control
ABOUT The OBD Opposed Blade Damper from US Draft Co offers all stainless-steel construction with diameters up to 36” standard (custom sizes available). The OBD is ETL listed for all types of heating appliances including Category I, II, III & IV as well as Building Heating Appliances and gas & solid fuel fireplaces. The OBD features the fastest actuator in draft controls specifically designed by US Draft Co to provide immediate response to system changes. With a continuous temperature rating of up to 1,000˚F (1,400˚F intermittent), the OBD is a great solution for high-temperature AND high-efficiency appliances.

When combined with a V-Series controller, the US Draft Co OverDraft Control System (ODCS) maintains proper draft in the manifold during overdraft conditions.

For more information, visit the OverDraft Control Systems page.
Data Sheets
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Control Options

V150 Constant Pressure Controller
  • - Up to 2 Appliances
  • - Up to 2 Applications
  • - True bi-directional (+/- 1.0" wc)
  • - 4-button LCD screen
V200 Constant Pressure Controller
  • - Up to 4 Appliances
  • - Up to 2 Applications
  • - True bi-directional (+/- 1.0" wc)
  • - 4-button LCD screen
V250 Constant Pressure Controller
  • - Up to 6 Appliances
  • - Up to 2 Applications
  • - True bi-directional (+/- 1.0" wc)
  • - 4" Color Touchscreen
V300 Constant Pressure Controller
  • - Up to 4 Appliances
  • - Up to 3 Applications
  • - True bi-directional (+/- 1.0" wc)
  • - 7" Color Touchscreen
V350 Constant Pressure Controller
  • - Up to 15 Appliances
  • - Up to 3 Applications
  • - True bi-directional (+/- 1.0" wc)
  • - 7" Color Touchscreen
AX42 Constant Speed Controller
  • - Up to 4 Appliances
  • - Up to 2 Applications
  • - Fixed speed
  • - On-board potentiometer