Historisches Archiv der Stadt Köln

The slot diffuser VZ-90 is a special, high-performance diffuser with a system width of 124 mm, optionally suited for direct installation in an air duct system or as a model with a plenum box. The slot diffuser can be delivered in any desired lengths and combinations. The standard length of an air guiding nozzle is 250 mm. The diffuser consists of extruded aluminium profiles, by choice with blind frame, as well as rotatably mounted individually adjustable air guiding elements with boomerang profiles. The diffuser can used for supply as well as exhaust air and is especially suited for constant and variable volume flows in large rooms in the industrial but also comfort sector. The recommended flow rate is between 250 and 600 m³/h per meter at temperature differences between +4 K and – 12 K and sound power levels up to 40 dB.

The IBDS is a linear diffuser system with multiple high-speed nozzles for floor and ceiling mounting. It specializes in reaching high penetration depths at high temperature differences. The diffuser is available in single- or multiple-slot configurations and is suitable for continuous runs.

The PFG is a low velocity diffuser with a cuboid design whose rectangular perforated front plate is mounted to a connecting unit with a round or square spigot (horizontally or vertically mounted). The removable front plate consists of the front perforated plate, a honeycomb rectifier and a second perforated plate. On request, the entire front can be wrapped in frame profiles (models PFG-SI and PFG-SK).

The tube diffuser VZ-AR consists of a longitudinally welded jacket tube with lengthwise arranged slots with integrated air guiding nozzles in form of double boomerang profiles with rectifier blades. The possible amount of parallel slot-rows is mainly limited by its dimensioning. The connection of single tube diffusers to a string is accomplished via a spigot with lip seal, alternatively with METU-flanges. The tube diffusers are designed for visible installation and fulfill the highest of architectural and ventilation demands. The exhaust air variant consists of a tube diffuser with a longitudinally welded jacket tube with a round VZ-AR-AL cross section with cross to the longitudinal axis punch-outs. The dimensions of the models are determined depending on the exhaust air volume.

The grilles ASD / CSD are ventilation grilles for usage with supply and exhaust air with horizontally (-H) or vertically (-V) arranged, individually adjustable air guiding blades and self-locking blade bearing. The models ADD / CDD are equipped with horizontal blades and a second vertical row of blades that simultaneously enables air control. The grille is mounted either via rotating bolts (R) or with visible screws in the frame (C).