Motorised Smoke/Fire Dampers

A combination fire/smoke damper must maintain its physical integrity and a low leakage rate in the most demanding conditions

A combination fire/smoke damper must maintain its physical integrity and a low leakage rate in the most demanding conditions

 Fire/Smoke Dampers

Smoke, like air will pass through a ventilation system. The purpose of a smoke damper, is to prevent the progression of smoke through the system. To be truly effective therefore, a smoke damper must have low leakage factor. A combination fire/smoke damper has more demanding criteria, it must maintain its physical integrity in the most demanding conditions of temperature, and throughout this period it must maintain a low leakage rate, if it is not capable of doing this, then is cannot be an effective fire/smoke damper. Quite definitely, simple adding a device to a fire damper, which will initiate operation following a signal from a smoke sensor does not make a fire damper a smoke damper. The absence in the U.K. of specific smoke leakage standards and criteria has permitted manufacturers to self define what a smoke damper is. Careful consideration and evaluation should therefore be made when choosing your fire/smoke damper.

Fire/smoke dampers specifically address leakage rates at ambient and elevated temperatures. The blades are roll-formed from 16 msg steel and casings are 18 msg steel, complete with welded corners. The linkage is concealed out of the airstream completely, within the double skin casing.

  1. Precise roll formed construction.
  2. ES classified fire dampers with reduced smoke leakage characteristics (BS EN 13501-3)
  3. Tested installation methods in differing supporting constructions (BS EN 1366-2)
  4. Stainless Steel Springs.
  5. Stainless steel jamb seals.
  6. Available with Microswitches for blade status.
  7. Available with HEVAC/HVCA installation Frames.
  8. CE marked complying with the requirements of BS EN 15650
  9. Blade leakage – Class 2
  10. Casing leakage – Class C