he fire dampers of KWP-L type are designed for the assembly in the ventilation systems as the cut-off barriers separating the zone covered with fire from the remained part of the building. As a result of the foregoing the basic function of the dampers of KWP-L type is to restrain the distribution of fire, temperature and smoke. These dampers are the dampers designed for building in horizontally and vertically. They may be installed in all types of the wall barriers. These dampers have the fire resistance: EI 120 (ve ho i↔o)S in rigid walls and ceilings. EI 90 (ve i↔o)S in light weight partition wallsThe fire dampers of KWP-L type are designed for using in the systems with dry and filtered air. In case of using at the fresh air inlet or in the extremely difficult conditions, the dampers should be embraced with special program of periodical testing, adequately to the conditions.The effectiveness of the dampers is proved by the testing according to the standard PN-EN 1366-2. Flap is designed, produced and shall be tested in accordance with the requirements of PN EN 15650 and PN-EN 13501-3.
