Product features:
Type demonstration
"C": marine
"B": means ex-proof，no letter means no ex-proof
"Q"： pneumatic
"FH": fire damper
"（D）" ： multi-blade，no letter means single blade
"A*B，DN"： A*B rectangle：long*wide DNround：duct diameter
Functions
Fire damper mainly used on the ventilation duct needs fireproof requirement. Once the fire happened, the temperature inner the duct increased to 70℃, the fire damper will close automatically, thus can prevent the fire spreading from the duct. Control type, rotary cylinder.
Advantages
Fire damper adopts exclusive frock designing and production, with small deflection, low air leakage, high stability. Equips relative signal feedback, can control automatically.
Basic parameters：
● fusing temperature 70±3℃，
● close time : ＜2S，
● air leakage ≤5m3/m2·h，
● fireproof grade : A0~A60；
● Control power : DC24V/AC110V/AC220V，50/60Hz，
● Protection grade : IP44/IP56，
● EX-proof grade : ExdIIBT4/ExdIICT4，
● fire-proof grade : A0~A60；
Application：
It was broadly used on passenger vessel, cargo ship, warship and offshore platform ducts.