Acoustic Silencer - Circular

Circular acoustic silencers and attenuators

Circular silencers constructed with a mineral wool absorbent material covered with perforated metal sheet with an exterior cover of seamed sheet metal.

These units reduce the noise transmitted through ducts produced by fans. Supplied in a wide range of standard and bespoke sizes.

For connection to circular ventilation ductwork pipes manufactured with helicoid seams. Ideal for ventilation and smoke extraction units etc.

Technical Data
Cover	Seamed galvanised sheet metal
Interior absorbent	Mineral wool
Options	Elastic mouth, special flanges, supports, flat exterior sheet metal
Principle	Flow through absorbent
Max. applicable pressure	200 mm.c.d.a. (1961Pa)
Insulation	50 or 100mm
Interior	Perforated metal sheet

 

Silencer Elbows

Ideal for use in those ventilation systems where the installation of straight silencers is not possible, or as a complement to them. There are different angles available depending on requirements 30, 45, 60 and 90°.

Energy losses are less than 30Pa.
To avoid the generation of turbulent noise it is recommended not to work at airflow velocities over 10 m/s.

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