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The fan consists of an axial‑inlet silencer, first‑ and second‑stage casings, an electric motor, a two‑stage impeller, inlet and outlet silencers, and duct fittings, among other components.
FB flameproof, press-in type, single-unit axial-flow local ventilation fan
The flameproof, press-in type, single-stage axial-flow local ventilator (also known as a single-stage fan) is primarily composed of a collector, a housing, an electric motor, an impeller, and an outlet silencer (rear guide vanes), among other components.