Manufactured to join on to rectangular ductwork, Coustek rectangular silencers come in a variety of configurations. All of the silencers have the ability to be stacked into large banks, thus accommodating an infinite amount of duct sizes, eliminating expensive transitions.
Casing: Casing is made of 1.0mm thick (20 gauge) galvanized steel. Various materials such as stainless steel, aluminum are available on request
Splitters: Splitters are made of 0.8mm thick high quality galvanized perforated sheets
Infill Insulation: Acoustic media used shall be short fiber-free inorganic glass fiber with long, resilient fibers, bonded with thermosetting resin
Sealant: High-pressure duct sealant is applied inside the casing along the length of each seam, and for rectangular casings behind each flanged corner that coincides with a seam to make it airtight.
Airway Area & Width: Airway area and width may differ based on technical calculations and final dimensions of attenuator.
Circular silencers are installed in the duct work between spaces, which must provide noise reduction of air tolerated noise to at least match the sound transmission loss of the separating structure.
Outer Casing: Outer casings of standard circular silencers shall be made of
lock former quality, galvanized steel, Type G90 (316/304 stainless steel,
aluminum), in the following gauges:
OUTSIDE DIA. METAL GAUGE- (0-10”w.g+)
Inner Casing: Constructed of 0.7mm perforated pre galvanized sheet steel
Acoustic Infill: Filler material, except for reactive (no media) silencers shall be inorganic glass fiber of a proper density to obtain the specified acoustic performance and be packed under not less than 5% compression to eliminate voids due to vibration and settling. Material shall be inert, vermin and moisture proof.
End Connections: Tapped end ring inserts are standard, alternative connections, and would be spigot or rolled angle flanges.
Performance: A central pod is fitted, constructed from 0.7mm perforated pre galvanized sheet steel with conical, domed or flat ends as appropriate constructed from pre galvanized sheet steel.