The Sonex range of circular silencers is designed primiraly for tube fan and othe type of in-line fans which have inlet and outlet diameters of between 100mm and 450mm.
The effective and economic solution for sound attenuation in circular duct systems from 100 mm to 315mm diameter. With at least three models per size throughout the range the system designer is at last given complete flexibility of choice allowing a selection which is the best balance of attenuation, size and cost for any application. The excellent attenuation characteristics of the Sonex range are achieved without imposing undue system resistance. Pressure losses are little more than those which would occur over a comparable section of straight duct.
The attenuator consists of a tubular liner manufactured from galvanised mesh. The liner is enclosed by a thick layer of mineral wool sound absorbing material.
Casing and end plates are formed from galvanised sheet steel.
Standard models have a 30 minute fire rating.