The Helios VARW 225/2 Ex is a high-pressure in-line mixed-flow fan engineered for use in explosive or hazardous environments, meeting ATEX certification requirements. It features a cylindrical duct housing made from pre-galvanised sheet steel, with rolled flanges on both ends that follow the DIN 24155 standard for dimensions and bolt patterns. Integrated guide vanes improve airflow efficiency and performance.
The fan is equipped with a mixed-flow impeller containing eight spatially curved blades made from durable, impact-resistant polymer. This impeller is dynamically balanced to class G 6.3 according to VDI 2060 and DIN ISO 1940 standards, ensuring vibration-free operation.
It is powered by a totally enclosed, single-phase condenser motor designed for reliable performance and long life. The motor is maintenance-free and fitted with sealed-for-life, low-noise ball bearings. The entire unit is explosion-proof, fully compliant with ATEX standards, making it ideal for demanding industrial settings.