Perforated Diffuser – PPD

Square Perforated Diffusers (PPD) suitable for Supply Air ceiling applications where air is to be introduced with the maximum diffusion and minimum disturbance.

Also suitable for Extract/Return Air applications.

Available to give 1, 2, 3 or 4 way throw patterns and the PPD can be supplied with Opposed Blade Dampers, Non Vision Plate, Plenum boxes and Adapter Boxes.

Full specification for ordering available in product data sheet below.

Alternate codes

Series PG, Type ADLQL, CPD, PD, PTVD/PRVD

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Product Description

Square Perforated Diffusers (PPD) are suitable for Supply Air ceiling applications where air is to be introduced with the maximum diffusion and minimum disturbance. Also suitable for Extract/Return Air applications.

Available to give 1, 2, 3 or 4 way throw patterns. The PPD can be supplied with Opposed Blade Dampers, Non Vision Plate, Plenum boxes and Adapter Boxes.

PPD diffusers have extruded aluminium frames with integral flange, the mitred corners are fully welded and linished.

The face plate is manufactured from 20 swg mild steel perforated plate (50% free area).

Standard finish is RAL9010 or polyester powder coated to the customers colour requirement.

PERFORATED DIFFUSER - PPD ORDERING
Example: PPD/S/F/S/F0/E/N/F0/Model Size
SeriesPPD
FrameS - 32mm - (standard)
N - 19mm
CoreF - Fixed
H - Hinged
CeilingS - Standard (cut in)
M - Modular (5952 tile)
T - Tegular (see data sheet)
B - Clip In Tile
Pattern1
2c (corner)
2o (opposite)
3
4-Way
E Extract
AccessN - Non Vision Plate
R - Neck Reducer (250, 300, 400, 500)
0 - Not Applicable
FixingF0 - No Fixings
F1 - CSK Flange Fixing Holes
Finish1 - (Mill Finish)
2 - RAL9006 (Silver/Grey)
3 - RAL9010 (White)
4 - RAL9005 (Black)
5 - RAL9003 (White)
6 - RAL9016 (White),
7 - Other RAL/BS Code (additional costs may apply)
8 - Chrome Finish - Powder Coated

PLENUM BOXES

Plenum boxes are accessories for use with Grilles and Diffusers. They are designed to equalise the pressure profile within the box and hence provide an even velocity at the face of the Grille or Diffuser without the use of Equalising Grids.