Helios Fans VARD 400/6 Ex

The Helios VARD 400/6 Ex is a high-pressure in-line mixed-flow fan designed for use in hazardous environments, fully compliant with ATEX explosion-proof standards. Its cylindrical casing is made from pre-galvanised sheet steel, featuring rolled flanges on both ends. The dimensions and flange hole patterns comply with DIN 24155, ensuring reliable and standardized installation. Built-in guide vanes optimize airflow and overall performance.

Equipped with a mixed-flow impeller consisting of eight spatially curved blades crafted from galvanized steel, the impeller is dynamically balanced to class G 6.3 in accordance with VDI 20060 and DIN ISO 1940, providing smooth and efficient operation. The fan is powered by a totally enclosed, maintenance-free 3‑phase squirrel cage motor with sealed-for-life, low-noise ball bearings. It is designed to operate without external control, making it suitable for continuous use in ATEX-classified areas requiring safe and dependable ventilation.