High-pressure tube fan with cylindrical tube sleeve, flanges on both sides, directly driven, explosion-proof in accordance with ATEX. Cylindrical tube made of galvanized sheet steel, with flange molded on both sides, hole pattern in accordance with DIN 24155, built-in guide vane. Semi-axial impeller, eight spatially curved blades made of thermoplastic. Vibration-free operation thanks to dynamic balancing in accordance with quality level G 6.3 VDI 2060 and DIN ISO 1940. Single-phase AC capacitor motor, closed design, maintenance-free, sealed, low-noise ball bearings with long-term lubrication. Ex version in accordance with ATEX.