Fire Rated Ventilation Air Valves

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Fire Rated Air Valves (Supply/Extract) for Ventilation Systems

We offer an extensive range of fire rated ventilation air valves for both supply and extract in domestic and commercial air handling systems.

Where a ceiling is a fire-separating element it needs to be protected in accordance with Approved Document B of the Building Regulations. Once a hole is made in a ceiling for an air valve, the integrity of the construction and its ability to perform in a fire is reduced significantly. This must be fire stopped to reinstate the original fire rating of the ceiling to prevent the rapid and spread of both smoke and fire through fire compartments.

An integral red intumescent disc will react in the event of a fire and expand to fill the penetration created by the hole in the ceiling, to provide the protection required to help protect the building and to allow the safe evacuation of its occupants. DuctStation fire rated air valves will provide 60 minutes of fire protection.

Ventilation Air Valves are mainly used as terminals for Mechanical Ventilation Systems (MEV or MVHR). Valves are adjustable by rotating the central baffle (or disc) and a locking nut permits accurate balancing of air volume.

All products meet the highest standards of quality and are available in White Epoxy Coated Steel. Our ventilation air valves include collars to fix directly to a round duct.

You might also want to take a look at our range of Non-Fire Rated Air Valves.

Fire Rated Metal Air Extract Valves

Designed to be installed where air is being extracted to the outside in a Mechanical Ventilation System. The pre-fitted intumescent gasket material in a fire situation will rapidly expand to seal off the open air valve.The penetration is then sealed against the spread of fire and the fire rating of the ceiling construction is maintained.

  • Range comes in 5 sizes (80, 100, 125, 150, and 200mm)
  • Meets the requirements of Building Regulations Document B
  • Maintains the integrity of Fire Rated ceilings for up to 60 minutes
  • Includes intumescent gasket
  • Available ex-stock
Fire Rated Metal Air Supply Valves

For return air in habitable rooms directing the air sideways to prevent occupant discomfort. The pre-fitted intumescent gasket material in a fire situation will rapidly expand to seal off the open air valve.The penetration is then sealed against the spread of fire and the fire rating of the ceiling construction is maintained.

  • Range comes in 5 sizes (80, 100, 125, 150, and 200mm)
  • Meets the requirements of Building Regulations Document B
  • Maintains the integrity of Fire Rated ceilings for up to 60 minutes
  • Includes intumescent gasket
  • Available ex-stock

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