Construction

The diffuser drum and frame are robustly constructed in aluminium extrusions and incorporate brush strips to provide a low friction air tight seal.

Materials

The type DJ Drum Jet Diffuser aluminium construction is supplied as standard in natural anodised finish (A3). Powder coat finishes are also available in either RAL or BS colour ranges.

Ancillaries

For general flow control, the Drum Jet diffuser is available with a key operated opposed blade damper, either fitted to the frame (DJ/OB) or supplied loose for duct mounting (OB/DM). For installations where the diffuser is to be mounted in a main duct wall or a stub duct, the type VED equalising deflector with individually adjustable scoop and straightening blades can be fitted to equalise the discharge velocity. (Also available loose for duct mounting – VED/DM). Alternatively, the duct mounted rhomboidal damper (RD/DM) can be specified for combined flow control and equalisation.

Installation

The standard fixing method is by a countersunk screw through the diffuser flange.