CHARACTERISTICS:Air flow constant regulators for circular ducts. Automatic mechanical functioning, without auxiliary energy to maintain air flow constant within a differential pressure range.UTILIZATION:For all ventilation systems to maintain air flow constant, independently of the pressure variations within the range of accepted values.DETAILS:Material: galvanised steel.Finish: zinc coated.Working temperature: -20° +70°C.Special uses: Version RPVC/Z with acoustic insulation 50 mm thickness.
