Silencers - Import export

The SLEFL flexible silencer is made of the Alnor Flex perforated duct. The sound insulating layer is 25 mm thick and clad in aluminium and polyester. The silencer is connected to the ductwork with male flanges made of metal. The product is available in two length sizes, 600 mm and 1200 mm. Other silencer versions are available on request with EPDM gaskets, female flanges, or in other length sizes. Insulation Insulation material glass wool. Insulation type trimmed from reel, flexible. Temperature range 20°C to +140°C Thermal insulation performance of mineral wool λ = 0.034 W/mK at 24°C Pressure drop See the enclosed diagram. Fire resistance The silencers are made from fireproof materials.

The silencers are delivered with the SPIRAL® system seals in the standard version. The diameter sizes d1 > 315 mm require ordering the NSL male couplings which need to be installed in the silencer before connecting the silencer to the ductwork. The male fittings are available separately. They are not delivered with the silencers. Glass wool thickness inside the silencer 50 mm for SIL50 depends on the outer cladding size. 100 mm for SIL100 depends on the outer cladding size. Insulation Insulation material glass wool. Insulation type trimmed from reel, flexible. Reaction to fire A1 acc. to EN 13162

The SLC and SRC rectangular duct silencers reduce the noise level in ventilation and A/C systems. This silencer type is usually installed between a fan and an air supply or exhaust duct, and upstream of air supply vents. All silencers are made of a housing and inner baffles. The housing is made from galvanized steel sheet and its ends are framed with steel sheet angles. All baffles inside the silencer have a round breast at one end and comprise a galvanized steel frame with a soundinsulating insert which absorbs the acoustic energy from the air flow. The soundinsulating insert is a set of nonflammable mineral wool panels. The outer surface of the soundinsulating insert is lined with a special abrasionresistant textile to protect the mineral wool from wear and tear. The mineral wool panels are finished with a glass fibre lining in black; this lining is suitable for systems with a maximum air flow rate of 20 m/s.

Ventilation duct made of aluminum reinforced with spirally wound steel wire. which stiffens the canal and gives it the right shape. The cable is resistant to temperatures in the range -30°C÷+250°C. The pipe is available with a diameter of 80mm. 100mm. 110mm. 115mm. 120mm. 125mm. 130mm. 140mm. 150mm. 160mm. 200mm. 250mm and 315mm. The standard length before stretching is 1m. and after stretching 3m. Element made in Poland. 45 years of experience of DOSPEL in production is a guarantee of the highest quality.