Features

RSK butterfly dampers are designed specifically for use with in-line fans such as those detailed in the selection table. They may also be used as simple backdraft dampers in a duct system.

The flaps are spring-loaded and when the fan is switched off they close providing a seal.

The pressure loss through these units must be added to the system loss before selecting the fan.

The tube is constructed from galvanised steel and the flaps from aluminium.

Pressure Losses