Stainless steel ventilation damper ARK

FOR HEAVY DUTY APPLICATIONS Non-return dampers prevent unwanted airflows against the intended airflow direction when the system is not in operation Air leakage with back pressure to EN 1751, class 4 Maximum differential pressure: 5000 Pa Blades made of aluminium, casing made of galvanised steel Available in standard sizes and many intermediate sizes Variant ARK (with linked blades) for variable volume flows Variant ARK-1 (with adjustable blade restrictors) for constant volume flows Installation in horizontal or vertical ducts Optional equipment and accessories Installation subframe Powder coating (RAL or DB) Stainless steel construction with stainless steel casing; blades made of aluminium Temperature resistant up to 200 °C with Viton seal Application Non-return dampers of Type ARK for the fresh air and exhaust air ducts of air conditioning systems Prevention of unwanted airflows against the intended airflow direction when the system is not in operation Blades close automatically when the system is shut down Maximum differential pressure: 5000 Pa Special characteristics Robust, maintenance-free construction Maximum differential pressure: 5000 Pa Closed blade air leakage with back pressure, in closing direction, to EN 1751, class 4 Damper for negative or positive pressure (air extract or discharge) Operating temperature 0 to 80 °C Optional temperature resistant construction for up to 200 °C, with Viton seal Installation in horizontal or vertical ducts Maintenance-free DU bearings with Teflon coating, bearing shafts made of stainless steel