Manual operation fire damper

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Manual operation fire damper

Our CSFH manual operation 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



Type demonstration

“C” : marine

“S” :  manual operation

“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, manual operation 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 stablility

· fusing temperature :70±3℃,

· close time < 2S,

· air leakage ≤ 5m3/m2·h,

· fireproof 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.


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