Parts Sale!


Take advantage of our 5% discount on new parts orders of $5,000+ for in-stock aftermarket parts placed May 28 - July 31. Click the link below to fill out your parts request and someone will get back with you immediately.

Parts Request

Louver Dampers

Custom Louver Dampers

Parallel Blade Louver Dampers are available for open-close service, fixed flow balance control, and for use as a variable control damper at the inlet box of a fan to pre-spin the air entering the fan wheel.

  • Multi-louver parallel blade fan inlet dampers, with airfoil blades, provide excellent fan control. High strength adjustable blade linkage with self-aligning rod ends is available, in addition to refractory lining for operation in high-temperature conditions.
  • Multi-louver parallel blade isolation dampers for open-close service or fixed flow balance control are manufactured with stainless steel spring seals that reduce leakage to less than 1%. Self-aligning blade shaft packing glands are available to maintain exact concentricity of the packing to the blade shaft at all times, providing maintenance-free service.

Opposed Blade Louver Dampers are used where the system requires air flow control or balance and can be used for on-off service.

  • Fan outlet multi-louver opposed blade dampers are designed to provide balance flow control. Internal stainless steel spring seals furnish tight shut-off, allowing isolation of the fan for maintenance. Heavy duty adjustable blade linkage with high strength spherical rod ends provide precise blade movement, while self-lubricating high temperature spherical carbon sleeve bearings running on stainless steel shaft allow for maintenance free service.