Type SDRF

Compact height, ideal for steps

Circular and rectangular staircase swirl diffusers

  • Various nominal sizes with 1 – 6 outlets
  • Volume flow rate range 2 – 25 l/s or 7 – 90 m³/h
  • Diffuser face made of sheet steel, powder-coated
  • For variable and constant volume flows
  • For false floors designed as positive pressure plenums
  • Installation into the risers of steps
  • Visible screw fixing
  • 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
  • Spring clip fixing (concealed)

SDRF-K/3 00179406_0


  • Application
  • Description

Application

  • Type SDRF 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 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 designed as positive pressure plenums
  • Installation into the risers of steps

Special characteristics

  • High induction results in a rapid reduction of the temperature difference and airflow velocity
  • Air discharge parallel to the installation surface
  • Excellent air quality since the supply air is discharged directly to the occupied zone
  • Vertical installation into steps

Nominal sizes

  • No. of outlets: 1, 2, 3, 4, 5, 6

Variants

  • SDRF-K: Spring clip fixing
  • SDRF-S: Screw fixing

Parts and characteristics

  • Circular diffuser face with one outlet
  • Rectangular diffuser face with two to six outlets
  • Outlets with fixed blades and with flow-optimising cup; cup with perforated rear plate used as a damper element to improve air distribution if there are several outlets
  • Fixing screws (with decorative caps) facilitate installing the diffuser face
  • Optional spring clip fixing

Materials and surfaces

  • Diffuser face made of sheet steel
  • Cup made of ABS plastic, UL 94, V-0, flame retardant
  • Cup similar to RAL 9005, black
  • Exposed diffuser face powder-coated RAL 9005, jet black
  • 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

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Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +1-770-569-1433 | Fax: +1-770-569-1435