1. smoke extraction system installed in the pipeline, usually in a closed state, when the fire manual or electric open up smoke. When close the exhaust pipe, the flue gas temperature reached 280 degrees, in a certain period of time to meet the fire stability and fire integrity requirements, since the exhaust effect of the valve.
2。 normally closed type smoke damper (normally closed, open telecommunications number, 280 degrees blown off, or manually shut down) is generally used in the exhaust system, the suction exhaust fan installed a fire control room control by the consumer to open, closed when the chain to close the exhaust fan。
3. exhaust valve, the various units of different names, some called according to its operating temperature of exhaust valve, depending on the nature of its use is called the fire valve, but only for the equipment side of the ordinary damper fuse metal into the a 280 fuse.
1. fire dampers can be interlocked with ventilators and smoke exhaust fans
2。 阀门的操作机构一侧应有不小于200mm 的净空间以利检修。
2。, the valve side of the operating mechanism should be no less than 200mm of the net space in order to facilitate the overhaul
3., before installing the valve, you must check the valve operating mechanism is intact, the action is flexible and effective
4. fire safety valve should be installed in the pipe against the wall or floor wind section, fire valve fire partition walls on both sides of the distance from the wall surface should be no more than 200mm, the pipeline fire valve on both sides of the 2.0m range and the insulation material used should be made of non combustible materials.
5. fire dampers shall be provided with separate hangers to prevent pipe deformation during fire and affect its performance
6. the fuse shall be mounted on the side of the fire that is dangerous
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