AMCA spark-free fan
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Are there any friends familiar with the AMCA sparkless fan standards? In the case of continuous explosive gas release sources, AMCA Class A or Class B standards must be followed; that is, none of the components in the fan that are exposed to flow of gas may be made of materials containing iron. Is this requirement in place?
I’m familiar with the ABC rating system, but I can’t remember the specific environmental requirements. It seems that there’s no requirement to use grade AB under the conditions you mentioned; it’s been too long – you should look up the relevant standards yourself
It must meet Class A standards, in accordance with AMCA99-0401-86 standards