Helios Fans VARD 315/4 Ex

The Helios VARD 315/4 Ex is a high-pressure in-line mixed-flow fan developed for hazardous environments requiring explosion-proof equipment. Fully compliant with ATEX standards, it features a cylindrical casing made from pre-galvanised sheet steel with rolled flanges at both ends. The flange dimensions and hole pattern adhere to DIN 24155 for standardized installation. Integrated guide vanes help improve airflow direction and fan performance.

This model includes a mixed-flow impeller with eight spatially curved blades made from impact-resistant polymer. The impeller is dynamically balanced to class G 6.3 in line with VDI 20060 and DIN ISO 1940, ensuring smooth and efficient operation. The fan is driven by a totally enclosed, maintenance-free 3‑phase squirrel cage motor with sealed-for-life, low-noise ball bearings. Not designed for control via external regulators, the VARD 315/4 Ex delivers safe, dependable airflow in ATEX-regulated zones.