Product Description

A round silencer (or attenuator) is a ventilation system component designed to reduce the noise level transmitted through the ducts from a fan or other equipment. It consists of an outer casing and an inner perforated duct, with a layer of non-combustible sound-absorbing material (mineral wool) in between.

Silencers are particularly effective at reducing aerodynamic noise in residential, office, and commercial spaces, ensuring acoustic comfort.

Key Features and Options

• Two Insulation Types: We offer standard silencers with 50 mm insulation thickness, as well as high-efficiency models with 100 mm insulation (available for diameters from 200 mm).
• Connection Type: The standard version is with an EPDM rubber gasket ("male", "-") for an airtight Class "D" seal and insertion inside the ducts.
• Airtightness Options: A version without a gasket can be manufactured upon request (to reduce cost).
• Non-Standard Lengths: Standard lengths are 600 mm and 900 mm. Other lengths, including 300, 1200, and 1500 mm, are available on request.
• Construction: The inner part is made of perforated steel to allow airflow while the insulation absorbs noise.

Available Types and Sizes

Silencers with 50 mm Insulation

Silencers with 100 mm Insulation

Material and Thickness (for all types):

• Material: Galvanized steel DX51+Z275. Stainless steel (AISI430, AISI304, AISI316), aluminum, and powder coating (according to RAL or RR catalogs) are available on request.
• Thickness: From 0.5 to 0.9 mm depending on the diameter.
• Certification: The products comply with CE, EN 1505:2000 and EN 1506:2007 standards.

Application and Installation Tips

• Installation: The silencer is installed in line with the ductwork. Both "male" spigots with rubber gaskets are inserted inside the ducts, ensuring an airtight connection.
• Fitting-to-fitting connection: To connect the silencer to another fitting (e.g., a bend), use a coupler (external connection).
• Sealing: When ordering the version without a gasket, the joints must be sealed with aluminum tape.

Availability and Ordering

• Availability: Silencers are generally supplied on a custom-order basis. Please contact us to check the availability of common sizes (e.g., 125/900 with 50 mm insulation).
• Custom Order: On request, it is possible to manufacture silencers without a gasket (to reduce cost), non-standard lengths (300, 1500 mm), non-standard diameters (up to 1250 mm), and any other non-standard variations (including the materials specified in the characteristics).