Louver Dampers

  • Multiple linkage and sealing arrangements for both flow control and isolation (<99.5%)
  • Flex-Ledge seal offers tight shut off with low pressure drop, and can operate in high dust load applications.
  • Many different actuator options to fit customer’s operating requirements.
  • Applications where 100% isolation is not required.
  • Applications where flow modulation is required (fans, etc.)
Operating Range
  • 0-5 psig depending on size
  • -100 to 1400°F
  • Sizes from 12” > 40’
  • Horizontal or vertical
  • Carbon Steel
  • Stainless Steel
  • Nickel Alloys
Louver 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.
  • Louver dampers typically require between 8”-24” of duct space for installation.
Louver Damper Form:
  • Single louvers are used for duct isolation and flow control.
Louver Damper Function:
  • Open/close applications where less than 99.5% isolation is acceptable
  • Flow control/modulation