fire dampers By passing through walls designed to provide a specific degree of fire-resistance in a building, the ventilation system creates a risk of propagation of fire and smoke. Fire dampers protect a building and its occupants from this risk by restoring the fire-resistance rating of the wall that has been penetrated. Rf-Technologies offers a wide range of fire dampers: • Certified for all types of walls. • Compliant with the most stringent European standards. • Easy to install and seal using standard materials. • With superior air flow characteristics. • That can be installed at a minimal distance from another fire damper or from an adjacent supporting construction.

PRINCIPLE OF OPERATION The fire damper blade is open when the ventilation system is working. They close automatically thanks to the fusible link when the temperature in the duct exceeds a certain threshold: generally 72°C. In remote-controlled and motorised models, they can also close upon receiving a signal sent out by the fire safety system when it is activated by a smoke detector, for example. When closed, the fire damper maintains compartmentation during a guaranteed period. The ventilation system is working and the fire damper is open. A fire breaks out and the temperature reaches 72°C:...

FIRE RESISTANCE Fire resistance is an indication of a construction element’s capacity to withstand exposure to fire and prevent fire propagation from one compartment to another, during a given period. The fire resistance test determines the behaviour of a fire damper subject to specified temperature and pressure conditions, likely to arise during a fire. This test determines the fire resistance performance of a combination of elements: the wall in which the opening was created, the fire damper, and the material used to seal the opening. Requirements concerning these elements must be observed...

Technical Specifications The table below will help you select the best fire damper for your application. For further information, consult the classification on our website, the declaration of performance, and the classification reports. mm EI 120 (ve i↔o)S EI 120 (ho i↔o)S EI 120 (ve i↔o)S EI 120 (ve i↔o)S (500 Pa) (500 Pa) (500 Pa) (500 Pa) EI 120 (ve i↔o)S EI 120 (ho i↔o)S EI 90 (ve i↔o)S (500 Pa) (500 Pa) (500 Pa) EI 120 (ve i↔o)S (500 Pa) EI 120 (ve i↔o)S EI 120 (ho i↔o)S EI 90 (ve i↔o)S (500 Pa) (500 Pa) (500 Pa) EI 120 (ve i↔o)S EI 120 (ho i↔o)S EI 90 (ve i↔o)S (500 Pa) (500 Pa) (500 Pa)...

Exceptional air flow characteristics guarantee the energy and acoustic performance of the network. Fire dampers are a component of the ventilation system. That is why they must be perfectly integrated into the HVAC environment. The air flow properties of our dampers are therefore optimised to minimise both the air leakage through the tunnel and the pressure loss caused by the presence of the blade in the ventilation duct. airtightness The EN 1751 standard defines different airtightness classes for fire dampers according to the extent of leakage. To go to the higher class, a product must have...

A wide range of certified dampers for all types of walls. To ensure their compliance with the classification documents and to guarantee a specific fire resistance rating, fire dampers must be installed in accordance with the tested configuration. According to the type of wall, the installation and sealing procedures described in the classification report must always be observed. But fire dampers are installed on construction sites, not in a laboratory. Our R&D team knows that many participants are involved in the installation of our fire dampers: engineers, bricklayers, carpenters, plasterboard...

Rf-Technologies OOSTeRZELE RF-TECHNOLOGIES Rf-Technologies is a leading European manufacturer of specialist solutions for compartmentation and smoke evacuation. The company sells its products via a vast network of partners in more than fifteen European countries. Rf-Technologies was founded in 1985. It employs 170 people on two sites; one in Belgium (where its company headquarters are located) and the other in Slovakia. Ongoing investment in research and development testifies to a desire to continually develop and improve the range of products.