Helios Fans VARD 630/4 Ex

The Helios VARD 630/4 Ex is a high-pressure in-line mixed-flow fan engineered for ventilation in explosive or hazardous environments, offering full compliance with ATEX explosion-proof standards. Its cylindrical casing is constructed from pre-galvanised sheet steel and features rolled flanges at both ends. Flange dimensions and mounting holes follow DIN 24155, ensuring compatibility with standardized ductwork. Integrated guide vanes optimize airflow and enhance performance.

The mixed-flow impeller features eight spatially curved blades made from galvanized steel, dynamically balanced to class G 6.3 according to VDI 20060 and DIN ISO 1940 for smooth, vibration-free operation. The fan is powered by a totally enclosed, maintenance-free 3‑phase squirrel cage motor with sealed-for-life ball bearings for quiet, long-term use. Designed for fixed-speed applications, the VARD 630/4 Ex provides a safe and efficient ventilation solution in industrial settings where explosion protection is required.