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通风、空气调节系统对火灾发展影响大,系统中3c防火阀的合理设置和选用,对于阻止火势通过风管蔓延有重要作用,应当引起足够的重视。由于种种原因,实际工程中在3c防火阀的设置和选用方面常常会产生一些争议和困惑,其根源在于有关规范的规定尚存在一些不足,衷心希望有关部门和有关人员认真对待,加以解决,使规范能更好地指导和规范实际工作。