The product is an adjustable thermally fused extract valve made of metal in White colour. The valve acts as a blocking device to prevent the circulation of fire and smoke. If the ambient temperature of +72 °C is exceeded, the integrated fusible link releases the inner cone, which snaps closed by spring force. Can be used for insertion into winding seam pipes or for installation in walls and non-fire-resistant ceilings by means of the built-in ring (included).
KEY FEATURES:
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No maintenance requirements.
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Easy visual inspection which can be carried out at any time along with the ventilation unit.
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Effectively tested and maintains low system pressures for its level of protection.
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High noise damping value.
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Once set cannot be easily changed by unauthorised persons due to locking mechanism.
