FIELD: fire engineering.
SUBSTANCE: invention relates to devices preventing flame distribution in air ducts of venting systems. Fire damper in air ducts includes rotary valve installed in damper on driving axes. Fusible lock rests on manual drive flexible thrust, connecting bracket fixed to valve and valve setting handle. Fastening mechanism represented with bushing and spring is mounted onto damper body and interacts with clamping on thrust. Clamping is represented with rod tapered in bottom part and directed to clamping mechanism by its sharp end.
EFFECT: proposed technical solution allows for improving reliability of damper actuation and easiness in operation.
2 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| FIRE VALVE FOR AIR DUCTS | 2000 |
|
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