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Acoustic diffusers

Acoustic diffusers (types YAD and YAZ) combine static pressure recovery and sound reduction into a single unit.
Designed for all types of comfort and industrial ventilation systems, they deliver uniform, low-noise airflows and are available for all sizes of NOVENCO's NovAx™ and ZerAx® axial fans.

Product highlights
Effective noise reduction
The acoustic diffusers lower sound levels and optimise performance in comfort and industrial environments.
Improved static pressure recovery
Their conical shape reduces the air velocity, recovering static pressure (potential energy) from dynamic pressure (kinetic energy).
Robust construction
Durable, galvanised steel casings secure reliable operation over a wide temperature range.
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Product highlights
Effective noise reduction
The acoustic diffusers lower sound levels and optimise performance in comfort and industrial environments.
Improved static pressure recovery
Their conical shape reduces the air velocity, recovering static pressure (potential energy) from dynamic pressure (kinetic energy).
Robust construction
Durable, galvanised steel casings secure reliable operation over a wide temperature range.
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Product information
Product data
Fan sizes
Contact form
Navigate to
Product information
Product data
Fan sizes
Contact form

The YAD acoustic diffuser has a round outer shape, while the YAZ is octagonal; both feature a conical perforated inner tube.
Versions are available with or without a silencing core to handle high-frequency or standard sound attenuation.
The YAD fits all sizes of NovAx and ZerAx axial fans, while the YAZ is available exclusively for the Ø1800 fan size.

  • Temperature range: –40 to +120 °C.
  • Standard corrosion category: C3.
  • Optional: Acid-resistant (stainless) steel executions.

The YAD offers universal compatibility across all NovAx and ZerAx fan sizes. The YAZ provides specialised integration for fan size Ø1800.

Certifications
  • Corrosion category C3
  • Optional acid-resistant executions
Performance

Designed for noise reduction and static pressure recovery in axial fan systems.

Sizes

• YAD: Compatible with all NovAx and ZerAx fan diameters
• YAZ: For fan size Ø1800

Materials & corrosion categories
  • Casings (YAD and YAZ) are made from galvanized steel.
  • Acoustic insulation is stone wool with a fiberglass protection layer.
  • Standard corrosion protection is Category C3 per EN/ISO 12944-2.
  • Acid-resistant (stainless) steel materials are optionally available.
Accessories & variations
  • YAD: With or without core for different attenuation performance.
  • YAZ: Without core for standard attenuation.

• YAD: All NovAx and ZerAx axial fan sizes
• YAZ: Fan size Ø1800 only

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