Information sheet SCD flexible silencer

SCD fl exible silencer
The SCD is a fl exible silencer consists of a Polypropylene
fabric cloth inner duct and provided with an aluminium/
polyester laminated outer jacket. The space between the
inner and outer duct is fi lled with 25 mm or 50 mm sound
absorbing material. The inner duct is hydrophobic. The
duct is standard fi tted with galvanized metal sleeves at
one end and a connection nipple at the other end to fi t to
any rigid ductwork or appliance instantly.
• High fl exibility
• Great sound insulation values
• Hydrophobic inner duct
• Sound absorbing material
• Fits to any rigid duct system
Sound insulation
Non-woven ins. 25 or 50 mm
Technical data
SCD sound attenuator
Inner duct
Non-woven Polypropylene
fabric cloth
Glass wool blanket 25 or 50 mm mineral wool / fl eece
Outer jacket Alu / poly laminate
Connection One side socket, one side nipple
Connection Galvanized metal
Fire protection class Bs1 (EN13501-1)
Temperature range °C -30 to +140
Work pressure Pa Max. 2000
Air velocity m/s Max. 10
Length m 1,0 (without socket and nippel)
Bend radius 1 x ⌀ + 25 or 50 mm
SCD fl exible silencer
SCD Insulation Item no. D (mm) L (m)
medium frequency range Hz
63 125 250 500 1000 2000 4000 8000 Tot (dB)
80 25 mm 2554
80 1 13,6 22,4 40,2 38,7 36,5 41,3 51,6 45,8 39
100 25 mm 2555
100 1 15,9 22,9 31,1 38,6 36,4 40,6 50,1 35,9 39
125 25 mm 2556 125 1 11,7 18,9 32,4 29,9 28,8 34,5 40,9 24,5 32
150 25 mm 2557 150 1 12,2 10,9 29,7 30,1 29 38,3 34,6 20,4 32
160 25 mm 2558 160 1 19,3 25,4 30,5 27,1 23,8 32,2 27, 8 17,3 28
200 25 mm 2560 200 1 10,7 12,1 28,7 22,8 22,8 30,6 19,4 11,9 26
250 25 mm 2561 250 1 12,9 18,7 24,3 19,5 19,9 27,7 12,9 10,2 22
315 25 mm 2562 315 1 16,6 23,2 18 15,2 16,5 19,6 10,1 8,5 17
100 50 mm 84330 100 1 4,3 8,5 15,5 28,2 50,8 51 5 7, 8 38,5 30
125 50 mm 84331 125 1 17,7 26,3 35,4 29,2 33,3 45,4 40,5 26,5 35
160 50 mm 84332 160 1 16,5 24,1 30,6 27,5 29,6 41,7 28,7 18,1 32
200 50 mm 84333 200 1 6,5 6,3 21,1 27,1 30,5 35,8 19,4 12,3 29
Pressure loss