Sound Attenuators

Rectangular Type: The NRESA attenuator by Bruno Contracting is designed to suppress duct-borne noise from fans, AHUs, generators and industrial sources. Effective across low & high frequencies with minimal pressure loss.

Cylindrical Type:

• NCYSA: Straight-through design, negligible pressure loss.
• NCYPSA: With concentric acoustic pod for higher attenuation.

Generator Room Solutions: Complete acoustic treatment for genset rooms including lining, acoustic doors, attenuators, and mufflers — custom-engineered by Bruno Contracting.

Cyclone Separators for Generator Flue Pipes

Bruno Contracting cyclone separators filter smoke and flue gases before emission. Welded for robustness, with rain cap to prevent water ingress.

Available Types:

• Black steel, heat-resistant coated
• AISI 304 stainless steel (1.4301)
• AISI 316L stainless steel (1.4404) – ideal for coastal/industrial areas

Perforated High Efficiency Round Duct (PHID)

The PHID Round Duct by Bruno Contracting is a high-induction diffuser engineered for optimal ventilation and air mixing. The perforation is tailored to the dimensions and needs of the installed space.

A perfect choice when technical performance must integrate with architectural design.

Air Filter Housings

Bruno Contracting supplies a full range of inline housings for HEPA and activated carbon filters, ensuring air quality and system reliability.

• Withstands ±1000 Pa internal pressure
• Material: galvanized steel RAL 9010, AISI 304, or AISI 316L
• Pre-filter tracks: 25 mm / 50 mm
• Sizes 1.5, 2, 3 include dual access doors
• Max filter depth: 400 mm

Generator Mufflers

Bruno Contracting manufactures generator mufflers to reduce noise and resonance. Installed after the generator in line with the flue, each unit is tailored for durability and efficiency.

Material Options:

• Mild steel, 2 mm min. thickness
• AISI 304 stainless steel (2–3 mm)
• AISI 316L stainless steel (2–3 mm)