Fire-resistant valve

The ventilation valve is fitted with a fire-safety device. This fire-safety device consists of a spring-loaded melt block so that if the temperature of the outflow air rises above 70°C the valve will close automatically. Tested according to BS476, part 20: 1987. The fire resistance time is longer than 60 minutes. These ventilation valves come with a bayonet fitting for fitting in the duct. This bayonet holder is fitted at the end of the duct.
Attention: only for solid ceilings, not suitable for suspended ceilings!