Infinitely variable supply and exhaust air valve Type BTZ-2-K90/ K30

  • Infinitely adjustable fire resistant cone valve for supply and exhaust air
  • Triggering: At 72° C with fusible link
  • Standard lengths: NW 125,160,200
  • Aerodynamically designed profile gives low noise
  • Available in diameters DN125, DN160 and DN200
  • Fire resistance class K90 for mounting on fire resistant ducts, or fitted with an expanded metal grille, otherwise K30

Strulik type BTZ-2-K90 cone valve combines the function of a continuously adjustable supply and exhaust air valve with fire resitance characteristics up to K90 depending on installation application.

The cone valve fire dampers are mounted directly into the compartment boundary. The effectiveness of the fire resistance is provided by the valve cone.

No special fixtures and fittings are required (This is time saving and very economic).

Strulik fire resistant cone valves can even be retrofitted into ventilation systems in order to comply with the applicable fire protection requirements.


DN100, DN125, DN160 and DN200


Installation Situations

Installation in masonry or concrete floors
Installation in lightweight partition walls F30-F90
Installation in fire-resistant ventilation ducts L30-L90 and cable ducts
Installation in fire-resistant false ceilings F30
Installation in solid masonry, concrete or gas concrete walls
Installation in lightweight partition walls F90 (F30)


Logo Strulik GmbH
Close Navigation