Louver dampers are designed and built for the specific requirement of heavy duty service applications where reliable modulation of hard to handle media is required. Louvers are available in parallel or opposed blade operation and in a variety of materials to withstand the most difficult combinations of temperature and atmosphere.
Louver dampers can be supplied for high temperature applications. For high temperature service, the frame is internally lined with refractory and the blade material is of an alloy suitable for that specified temperature. Louvers can be designed for service temperatures in excess of 2000˚ F.
Blades may be oriented vertically or horizontally in the frame. Optimum number and width of blades can be determined after the full parameters of plant operating characteristics are known. Blades may be built to a maximum of 4′ wide by 25′ long. Blade Configuration Blades may operate in parallel or opposed direction. Parallel blades offer tighter sealing and are primarily used for balancing or isolating duct flow. Opposed blade operation is used to maintain a straight gas flow through the ductwork and provides better modulating capability.
Louver dampers can also be supplied in either a square to round configuration or as a round configuration. A square to round configuration is accomplished by fabricating a square damper frame and providing a transition to round.
The damper blades rotate in opposite directions. This configuration provides a uniformed open area that yields good controllability.
The damper blades rotate in the same direction. This configuration is used to balance or isolate flow.