Helios Fans VARD 560/4 Ex

The Helios VARD 560/4 Ex is a high-pressure in-line mixed-flow fan engineered for use in environments with explosive atmospheres, compliant with ATEX regulations. Its cylindrical casing is fabricated from pre-galvanised sheet steel and includes rolled flanges on both ends. The flange dimensions and bolt patterns align with DIN 24155 specifications for accurate and secure installation. Integrated guide vanes enhance airflow performance and direction.

Equipped with a mixed-flow impeller featuring eight spatially curved galvanized steel blades, the fan is dynamically balanced to class G 6.3 as per VDI 20060 and DIN ISO 1940 standards to ensure smooth and vibration-free operation. The motor is a totally enclosed 3‑phase squirrel cage design, maintenance-free and fitted with sealed-for-life ball bearings for quiet performance. This model is not controllable and is ideal for continuous use in hazardous or explosion-risk ventilation scenarios.