Butterfly Dampers

  • Multiple linkage and sealing arrangements for both flow control and isolation, with 100% isolation options available.
  • Many different actuator options to fit customer’s operating requirements.
  • Typically used for isolation only.
  • Typically used for isolation up to 99.5%
  • 100% isolation can be achieved using a supplied seal air system.
Operating Range
  • 0-50 psig depending on size
  • -100 to 2000°F
  • Sizes from 12” > 10’
  • Horizontal or vertical
  • Carbon Steel
  • Stainless Steel
  • Nickel Alloys
Butterfly Damper Fit:
  • Attached or linked to piping/duct flanges or directly to duct.
  • Flange connections may be alignment bolted and seal welded into the duct, or provided with bolt and gasket type connections.
  • Butterfly dampers typically require between 8”-12” of duct space for installation.
Butterfly Damper Form:
  • Butterfly dampers are used for duct isolation and flow control.
Butterfly Damper Function:
  • Open/close applications where less than 99.5% isolation is acceptable
  • Flow control/modulation