The Cosmo 2-in-1 butterfly valve is unique because it is not only fire-resistant but also provides protection against cold smoke according to WRD requirements. In case of a fire, the Cosmo butterfly valve closes even before the warm smoke development begins because the cold smoke valve is closed.
Phase 1, cold smoke
In the initial stages of a fire, cold smoke spreads through a building. Since this smoke has not yet reached the temperature of 72°C, the fusible link of a regular fire damper will not close. The Cosmo butterfly valve closes the cold smoke damper, preventing the spread in the early stages. This cold smoke valve complies with WRD requirements and is leak-tight Sa and S200.
Phase 2, warm smoke
The butterfly valve is equipped with a fusible link and will close at a temperature of 72°C. The Cosmo butterfly valve is fire-resistant for 60 minutes according to WBDBO and complies with the standards NEN 6069 and NEN 6075.
The fire and smoke-resistant butterfly valve is installed in both the supply and exhaust air duct and is suitable for installation on both insulated and non-insulated round air ducts. The Cosmo smoke and fire-resistant butterfly valve is a 100% mechanical solution, making it a user-friendly and cost-effective solution.
The Cosmo valve can be used in residential construction, where the valve is placed on the separation between the central supply and exhaust shaft of each dwelling. The Cosmo butterfly valve is designed for the most common sealing methods with shaft walls, but new sealing methods such as soft wool and graphite kit (also asymmetric) are also possible. It is suitable for installation on insulated and non-insulated round air ducts. The smoke and fire-resistant butterfly valve has been fully tested at 300 Pa.
| Brand | RF-T |
| Category | Smoke and fire dampers (butterfly) |
| GTIN | 8719544222916 |
| Manufacturer's item number | SC60-COSMO-160 |
| Article number | 50210160 |
