Reduce the risk with Easivent’s new compliant AOV Kits

It’s the responsibility of installers to ensure their systems are complaint. This risk can be reduced by ensuring the products they use are certified and compliant.

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Make way for the EV-301 and EV-601

We’ll soon be rolling out our new EV-301 and EV-601 panels as an all singing and dancing replacement of the SP-300 and SP-600 panels.

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5 additions to your control panel (which aren’t as expensive as you think)

You’ve installed our smoke/daily vent control panels, but did you know you can add on some features at little extra expense?

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What actuator do I need for my window?

Stairwell ventilation can be achieved by automatically opening a window within the stairwell. As always this is subject to the minimum free area being achieved when calculated using the method in diagram C7 of Approved Document B.

It is recommended that bottom hinged outward opening windows are selected for efficient smoke evacuation, however this is not a requirement of ADB. Stairwell ventilators are more commonly used for replacing fresh air in a lobby extract system.

A variety of actuators are available for different window types depending on what the required free area is.

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What type of stairwell smoke ventilator can I use?

A stairwell smoke ventilator is an AOV which provides at least 1.0m2 of free area when open. It usually serves one of two purposes;

  • to evacuate any smoke that gets in the stairwell of small buildings,
  • or, more commonly, it provides replacement air for a lobby smoke extract system in large buildings.

The most common product types of stairwell ventilators are illustrated below.

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What is a stairwell AOV system?

Stairwell automatic opening ventilators (AOV) are used in the stairwells of flats and office buildings where protecting the common escape routes is of paramount importance. 

A stairwell smoke ventilator is an AOV which provides at least 1.0m2 of free area when open. It usually serves one of two purposes;

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