Type-approved by most recognized classification societies, class A0 without insulation, A15-A60 when suitably insulated
ATEX approved. Shock and vibration tested. (available as an option)
Blades contain silicone seals (effective up to 300 ºC)for low leakage in normal conditions and thermal expansion graphite seals (effective from 150 ºC) to increase tightness even up to 50% in a case of fire.
Closed damper fulfills the requirement of leakage from class 1 to class 3 (EN1751:2014) depending on the size. Details available from Halton Marine.
Casing leakage (EN1751:2014)class B
Nominal fuse release temperature 50 ºC, 74 ºC or 100 ºC. Other temperatures available.
Low weight due to patented double skin blade structure
Automatic electrical, pneumatic or spring operationsystem available
Maximum duct pressure for damper construction 5000 Pa and maximum air velocity 15 m/s
Normal operation temperature for damper between
-50 ºC to +80 ºC. Actuator and component selection can have an effect on this temperature range. Other temperatures available on request