Our CDFH electric driven fire damper according to the ship structure fireproof requirements of SOLAS (1974) and following amendments, has already passed the IMO fire resistance and environment condition test, and got China ship proving type approval certificate and LR, GL, ABS,BV,DNV,NK,CE certificates. And CBDFH fire damper got the EX-proof certificate after China ex-proof bureau inspection.
Electric driven fire damper
“B”: means ex-proof；no letter means no ex-proof
“FH”: fire damper
“（D）”: multiple-blade , no letter means single blade
“A×B，DN”：A×B rectangle：long×wide / DN round：duct diameter
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, BELIO electric actuator. Our fire damper was designed according to marine work, can block steam, smog, make sure the normal work under this condition, especially applicable to vessel, offshore platform and underground construction and other humid environment.
Fire damper adopts exclusive frock designing and production, with small deflection, low air leakage, high stability. Equips relative signal feedback, can control automatically.
· 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；
Fire damper mainly used on the ventilation and AC system ducts, its normally open type at the ordinary times. When the air temperature achieved to 70℃, the air valve fuse fusing, then closed automatically. It was broadly used on passenger vessel, cargo ship, warship and offshore platform ducts.