Type SD

For installation into steps and floor areas with no foot traffic

Circular and square staircase swirl diffusers

  • Nominal size 180 mm
  • Volume flow rate range 10 – 25 l/s or 36 – 90 m³/h
  • Diffuser face made of sheet steel, powder-coated
  • For variable and constant volume flows
  • For false floors and positive pressure plenums
  • Installation into the risers of steps or into horizontal or sloping floor areas which do not carry foot traffic
  • High induction results in a rapid reduction of the temperature difference and airflow velocity
  • Low sound power level due to optimised air distribution inside the diffuser


Optional equipment and accessories

  • Exposed diffuser face available in RAL CLASSIC colours
  • Spigot
  • Cross bar

SD-Q-LQ 00136389_0


  • Application
  • Description

Application

  • Type SD staircase swirl diffusers are primarily used as supply air diffusers for comfort conditioning applications
  • For auditoriums in theatres, cinemas or concert halls
  • Supply air discharge directly to the occupied zone
  • Swirling air discharge, either parallel to the installation surface or angled, for mixed flow ventilation
  • The efficient swirl creates high induction levels, thereby rapidly reducing the temperature difference and airflow velocity (supply air variant)
  • For variable and constant volume flows
  • For supply air to room air temperature differences from –6 to +6 K
  • For false floors and positive pressure plenums
  • Installation into the risers of steps or into horizontal or sloping floor areas which do not carry foot traffic

Special characteristics

  • High induction results in a rapid reduction of the temperature difference and airflow velocity
  • Air discharge either parallel to the installation surface or angled
  • Excellent air quality since the supply air is discharged directly to the occupied zone
  • Installation into the risers of steps and into floor areas which do not carry foot traffic

Nominal sizes

  • 180

Variants

  • SD-Q-LQ: Square diffuser face, square face style
  • SD-Q-LR: Square diffuser face, circular face style
  • SD-R-LR: Circular diffuser face, circular face style

Parts and characteristics

  • Square or circular diffuser face with four sections of blades
  • Diffuser face with fixed air control blades
  • Angled air discharge from diffuser fixed to cross bar
  • Air discharge parallel to the installation surface from diffuser fixed to spigot
  • Simple installation of the diffuser face due to central fixing screw with decorative cap

Attachments

  • S: Spigot
  • T: Cross bar

Construction features

  • Spigot suitable for circular ducts to EN 1506 or EN 13180

Materials and surfaces

  • Diffuser face made of sheet steel
  • Cross bar and spigot made of galvanised sheet steel
  • Spigot dip coated similar to RAL 9005, black
  • Exposed diffuser face powder-coated RAL 9010, pure white
  • P1: Powder-coated, RAL CLASSIC colour

Standards and guidelines

  • Sound power level of the air-regenerated noise measured according to EN ISO 5135

Maintenance

  • Maintenance-free as construction and materials are not subject to wear
  • Inspection and cleaning to VDI 6022

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Contact

Thank you for your message!

Visual contact Visual contact

Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +44 (0)1842 754545 | Fax: +44 (0)1842 763051