FIRE DAMPER HI AIR KOREA(HAK) A-Class FIRE & GAS DAMPERS for marine & offshore installations are type-certified based on Marine Equipment Directive 2014/90/EU and IMO Res. MSC.307(88). These dampers can be also supplied with ATEX Directive 2014/34/EU for explosive atmosphere installations VIEW SHUT-OFF DAMPER HI AIR KOREA(HAK) SHUT-OFF DAMPERS are effective in isolating duct system that requires air tightness. These dampers can be also supplied with ATEX Directive 2014/34/EU for explosive atmosphere installations. VIEW FLOW CONTROL DAMPER HI AIR KOREA(HAK) FLOW CONTROL DAMPERS are used to regulate the airflow rates to ensure the required condition of HVAC system. VIEW PRESSURE RELIEF / NON-RETURN DAMPER HI AIR KOREA(HAK) PRESSURE RELIEF DAMPERS are used to relieve over pressure through ventilation ducts. When the pressure exceeds a certain level, the blades are opened by the air pressure applied to damper blades. VIEW