The ANTIDET Flap protective system is an active valve for separating an explosion and serves to separate the flame and pressure from an explosion, which spreads through pipelines from one facility to another, through its mechanical closure. ANTIDET Flap system protects particularly the inlet and outlet piping for filters, cyclones, drying rooms, etc., the device is usually secured with a system for explosion reduction or suppression, or they are resistant to maximum explosion pressure.