Description
Over-pressure duct dampers are used for low pressure ventilation, for heating and for ventilation where equalisation of the pressures between neighbouring areas is necessary and in areas where automatic interruption of air supply or air exhaust is required after exclusion of a fan.
Construction
- supply or exhaust
- supporting frame with flanges
- aluminium horizontal swinging blades
- soft tape placed on each blade silences the noise upon closing
Material
Blades: aluminium sheet metal
Material options for the supporting frame:
- galvanized sheet metal
- aluminium sheet metal
- stainless steel sheet metal
Installation
Between ducts with a flange.
Dimensions
