Helios Fans VARD 355/2 Ex

The Helios VARD 355/2 Ex is a high-pressure in-line mixed-flow fan engineered for operation in potentially explosive atmospheres, certified according to ATEX standards. It features a cylindrical casing made from pre-galvanised sheet steel, with rolled flanges on both ends. The casing and mounting hole layout are designed according to DIN 24155, ensuring easy and secure installation. Integrated guide vanes are included to enhance aerodynamic efficiency.

The fan is equipped with a mixed-flow impeller featuring eight spatially curved blades made from galvanized steel, offering high durability and strong performance. The impeller is dynamically balanced to class G 6.3 in accordance with VDI 20060 and DIN ISO 1940 for smooth, reliable operation. A totally enclosed, maintenance-free 3‑phase squirrel cage motor powers the unit, with sealed-for-life low-noise ball bearings. The fan is non-controllable and built for dependable, safe airflow in explosive industrial environments.