ALNOR SIL-50 – 50 mm Round silencers Owner’s Manual
- August 23, 2024
- alnor
Table of Contents
SIL-50 – 50 mm Round silencers
Round silencers
SIL
Description
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. Wool thickness inside the silencer:
50 mm for SIL-50 – depends on the outer cladding size.
100 mm for SIL-100 – depends on the outer cladding size.
Insulation:
Insulation material: wool.
Insulation type: trimmed from reel, flexible.
Reaction to fire: A1 acc. to EN 13162
Available materials – Product code examples
SIL-…-…-… – galvanized steel sheet
SIL-K-…-…-… – 1.4301/304 stainless steel sheet
SIL-K-…-…-…-316L – 1.4404/316L stainless steel sheet
SIL-A-…-…-… – aluminium sheet
SIL-CU-…-…-… – copper sheet
SIL-ZM-…-…-… – ZM310 coating (only up to a diameter of
Ød1 = 500mm)
Product code examples
Product code:
type SIL
Insulation thickness iii
Ød1 aaa
L bbb
Dimensions
Dimensions
SIL-50 – 50 mm insulation
Description
Ød1
nom
[mm] Dnom
[mm] L
[mm] Sound insulation [dB] at frequency [Hz] Weight
[kg] 125250 500100020004000 8000
SIL 080-300 80 180 300 6 15 29 45 50 26 28 2
080-500 80 180 500 9 18 32 48 53 29 31 3
080-600 80 180 600 11 19 33 49 54 30 32 3
080-900 80 180 900 13 22 36 52 57 33 35 5
080-1000 80 180 1000 14 23 37 53 58 34 36 6
080-1200 80 180 1200 7
SIL 100-300 100 200 350 5 13 26 41 44 22 24 2
100-500 100 200 550 8 16 29 44 47 26 27 3
100-600 100 200 650 9 17 30 45 49 27 29 3
100-900 100 200 950 12 19 32 48 51 29 31 5
100-1000 100 200 1050 13 21 34 49 52 30 32 6
100-1200 100 200 1250 7
SIL 125-300 125 224 350 4 11 22 37 41 19 21 3
125-500 125 224 550 7 14 26 40 44 22 24 4
125-600 125 224 650 8 15 27 41 45 24 25 4
125-900 125 224 950 11 18 29 44 47 26 28 7
125-1000 125 224 1050 12 19 31 45 49 27 29 7
125-1200 125 224 1250 9
SIL 150-300 150 250 300 4 11 23 34 36 18 19 4
150-500 150 250 500 7 14 26 37 39 21 22 4
150-600 150 250 600 8 15 27 39 41 22 23 6
150-900 150 250 900 11 18 29 42 43 25 26 8
150-1000 150 250 1000 12 19 30 42 44 26 27 8
150-1200 150 250 1200 10
SIL 160-300 160 250 350 3 9 20 33 35 16 18 3
160-500 160 250 550 6 12 23 36 38 19 21 5
160-600 160 250 650 7 14 24 37 39 21 22 6
160-900 160 250 950 10 16 26 40 42 23 25 8
160-1000 160 250 1050 11 17 28 41 43 24 26 8
160-1200 160 250 1250 10
SIL 200-300 200 300 350 2 7 16 31 31 15 16 4
200-500 200 300 550 5 10 19 34 34 18 19 6
200-600 200 300 650 6 11 20 35 35 19 20 7
200-900 200 300 950 8 13 23 38 38 22 23 10
200-1000 200 300 1050 9 15 24 39 39 23 24 11
200-1200 200 300 1250 12
SIL 250-500 250 355 550 4 9 18 29 27 15 16 9
250-600 250 355 650 5 11 19 30 28 16 18 11
250-900 250 355 950 8 13 22 33 31 19 20 14
250-1000 250 355 1050 9 14 23 33 32 20 21 12
250-1200 250 355 1250 11 17 25 35 34 21 23 17
250-1500 250 355 1550 12 18 26 37 35 23 24 20
Description
Ød1
nom
[mm] Dnom
[mm] L
[mm] Sound insulation [dB] at frequency [Hz] Weight
[kg] 125250 500100020004000 8000
SIL 300-500 300 400 500 4 8 16 25 23 13 15 13
300-600 300 400 600 5 10 18 27 25 14 16 15
300-900 300 400 900 7 12 20 30 27 17 18 16
300-1000 300 400 1000 8 13 21 30 28 18 19 19
300-1200 300 400 1200 10 15 23 32 30 20 21 22
300-1500 300 400 1500 12 17 24 34 32 21 23 25
SIL 315-500 315 400 500 4 7 14 23 21 13 14 11
315-600 315 400 600 5 8 16 25 19 14 15 12
315-900 315 400 900 7 11 18 28 21 17 18 16
315-1000 315 400 1000 8 12 19 28 22 18 19 16
315-1200 315 400 1200 10 14 21 30 24 19 21 19
315-1500 315 400 1500 12 16 23 32 26 21 22 25
SIL 355-600 355 450 600 4 9 16 22 17 13 14 13
355-900 355 450 900 7 11 19 25 19 16 17 18
355-1000 355 450 1000 8 12 20 26 21 17 18 20
355-1200 355 450 1200 10 15 22 27 22 18 20 22
355-1500 355 450 1500 11 16 23 29 24 20 21 27
SIL 400-600 400 500 600 4 8 15 20 15 12 13 15
400-900 400 500 900 6 10 18 23 17 15 16 20
400-1000 400 500 1000 8 12 19 24 18 16 17 22
400-1200 400 500 1200 9 14 21 25 20 17 19 25
400-1500 400 500 1500 11 15 22 27 22 19 20 31
SIL 450-600 450 560 600 4 8 16 18 13 12 12 23
450-900 450 560 900 6 11 18 21 16 15 15 27
450-1000 450 560 1000 7 12 19 22 17 16 16 29
450-1200 450 560 1200 9 14 21 23 18 17 17 31
450-1500 450 560 1500 11 16 23 25 20 19 19 36
SIL 500-600 500 600 600 3 7 14 17 11 11 12 32
500-900 500 600 900 6 9 16 20 14 13 14 42
500-1000 500 600 1000 7 11 17 21 15 14 15 51
500-1200 500 600 1250 9 13 19 22 17 16 17 59
500-1500 500 600 1500 10 14 20 24 18 17 19 72
SIL 560-900 560 630 900 6 9 15 19 13 12 14 31
560-1000 560 630 1000 7 10 16 20 14 13 15 34
560-1200 560 630 1200 9 13 18 21 15 15 16 39
SIL 630-900 630 710 900 5 8 14 18 11 12 13 34
630-1000 630 710 1000 6 10 16 18 12 13 14 39
630-1200 630 710 1200 8 12 17 20 14 14 15 42
*press-formed covers
Pressure drop
SIL-50 – 50 mm insulation
Description
Pressure loss [Pa] at air flow velocity [m/s] 2 4 8 10 12
SIL-50-080-300 0.43 1.74 6.95 10.86 15.64
SIL-50-080-500 0.44 1.77 7.07 11.04 15.90
SIL-50-080-600 0.45 1.80 7.18 11.22 16.16
SIL-50-080-900 0.48 1.93 7.72 12.06 17.37
SIL-50-080-1000 0.50 2.01 8.03 12.54 18.06
SIL-50-080-1200 0,61 2,43 9,72 15,19 21,87
SIL-50-100-300 0.36 1.42 5.68 8.88 12.79
SIL-50-100-500 0.36 1.44 5.76 9.00 12.96
SIL-50-100-600 0.37 1.47 5.88 9.18 13.22
SIL-50-100-900 0.40 1.61 6.45 10.08 14.52
SIL-50-100-1000 0.42 1.68 6.72 10.50 15.12
SIL-50-100-1200 0,53 2,11 8,44 13,19 18,99
SIL-50-125-300 0.29 1.15 4.61 7.20 10.37
SIL-50-125-500 0.29 1.17 4.68 7.32 10.54
SIL-50-125-600 0.30 1.20 4.80 7.50 10.80
SIL-50-125-900 0.34 1.34 5.38 8.40 12.10
SIL-50-125-1000 0.35 1.41 5.64 8.82 12.70
SIL-50-125-1200 0,51 2,03 8,13 12,71 18,30
SIL-50-150-300 0.34 1.34 5.38 8.40 12.10
SIL-50-150-500 0.34 1.36 5.45 8.52 12.27
SIL-50-150-600 0.35 1.39 5.57 8.70 12.53
SIL-50-150-900 0.38 1.54 6.14 9.60 13.82
SIL-50-150-1000 0.40 1.61 6.45 10.08 14.52
SIL-50-150-1200 0,46 1,84 7,36 11,50 16,55
SIL-50-160-300 0.24 0.96 3.84 6.00 8.64
SIL-50-160-500 0.25 0.99 3.96 6.18 8.90
SIL-50-160-600 0.25 1.02 4.07 6.36 9.16
SIL-50-160-900 0.29 1.15 4.61 7.20 10.37
SIL-50-160-1000 0.31 1.23 4.92 7.68 11.06
SIL-50-160-1200 0,41 1,65 6,58 10,29 14,81
SIL-50-200-300 0.17 0.67 2.69 4.20 6.05
SIL-50-200-500 0.17 0.69 2.76 4.32 6.22
SIL-50-200-600 0.18 0.72 2.88 4.50 6.48
SIL-50-200-900 0.22 0.86 3.46 5.40 7.78
SIL-50-200-1000 0.24 0.94 3.76 5.88 8.47
SIL-50-200-1200 0,34 1,36 5,42 8,47 12,20
SIL-50-250-500 0.18 0.74 2.96 4.62 6.65
SIL-50-250-600 0.19 0.77 3.07 4.80 6.91
SIL-50-250-900 0.23 0.91 3.65 5.70 8.21
SIL-50-250-1000 0.25 0.99 3.96 6.18 8.90
SIL-50-250-1200 0.35 1,40 5.61 8.77 12.63
SIL-50-250-1500 0.40 1.58 6.34 9.90 14.26
Description
Pressure loss [Pa] at air flow velocity [m/s] 2 4 8 10 12
SIL-50-300-500 0.15 0.59 2.34 3.66 5.27
SIL-50-300-600 0.16 0.62 2.50 3.90 5.62
SIL-50-300-900 1.90 7.58 30.34 47.40 68.26
SIL-50-300-1000 0.21 0.84 3.34 5.22 7.52
SIL-50-300-1200 0.31 1.25 4.99 7.80 11.24
SIL-50-300-1500 0.37 1.50 5.99 9.36 13.48
SIL-50-315-500 0.12 0.50 2.00 3.12 4.49
SIL-50-315-600 0.13 0.53 2.11 3.30 4.75
SIL-50-315-900 0.17 0.67 2.69 4.20 6.05
SIL-50-315-1000 0.19 0.75 3.00 4.68 6.74
SIL-50-315-1200 0.29 1.16 4.65 7.26 10.45
SIL-50-315-1500 0.35 1.39 5.57 8.70 12.53
SIL-50-355-600 0.11 0.43 1.73 2.70 3.89
SIL-50-355-900 0.14 0.57 2.27 3.54 5.10
SIL-50-355-1000 0.16 0.64 2.57 4.02 5.79
SIL-50-355-1200 0.26 1.06 4.22 6.59 9.50
SIL-50-355-1500 0.33 1.33 5.34 8.34 12.01
SIL-50-400-600 0.09 0.37 1.50 2.34 3.37
SIL-50-400-900 0.13 0.52 2.07 3.24 4.67
SIL-50-400-1000 0.15 0.59 2.34 3.66 5.27
SIL-50-400-1200 0.25 1.01 4,03 6.29 9,06
SIL-50-400-1500 0.33 1.31 5.22 8.16 11.75
SIL-50-450-600 0.08 0.34 1.34 2.10 3.02
SIL-50-450-900 1.20 4.80 19.20 30.00 43.20
SIL-50-450-1000 0.14 0.56 2.23 3.48 5.01
SIL-50-450-1200 0.24 0.97 3.87 6.05 8.71
SIL-50-450-1500 0.31 1.25 4.99 7.80 11.23
SIL-50-500-600 0.07 0.29 1.15 1.80 2.59
SIL-50-500-900 0.11 0.43 1.73 2.70 3.89
SIL-50-500-1000 0.12 0.50 2.00 3.12 4.49
SIL-50-500-1200 0.23 0.92 3.68 5.75 8.28
SIL-50-500-1500 0.30 1.21 4.84 7.56 10.89
SIL-50-560-900 0.10 0.39 1.57 2.46 3.54
SIL-50-560-1000 0.12 0.47 1.88 2.94 4.23
SIL-50-560-1200 0.22 0.88 3.52 5.51 7.93
SIL-50-630-900 0.09 0.36 1.42 2.22 3.20
SIL-50-630-1000 0.11 0.43 1.73 2.70 3.89
SIL-50-630-1200 0.21 0.84 3.37 5.26 7.58
Dimensions
SIL-100 – 100 mm insulation
Description
Ød1
nom
[mm] Dnom
[mm] L
[mm] Sound insulation [dB] at frequency [Hz] Weight
[kg] 125250 500100020004000 8000
SIL 100-500 100 300 500 20 29 40 44 52 27 27 6
100-600 100 300 600 21 30 44 48 53 29 28 7
100-900 100 300 900 22 34 52 57 57 32 31 9
100-1000 100 300 1000 22 34 55 60 58 33 33 11
100-1200 100 300 1200 24 37 58 64 61 34 34 12
SIL 125-300 125 315 300 17 24 38 42 51 26 28 5
125-500 125 315 500 18 26 36 42 49 25 25 8
125-600 125 315 600 18 26 36 42 49 25 25 8
125-900 125 315 900 20 30 48 55 54 29 30 11
125-1000 125 315 1000 20 31 51 58 55 31 31 13
125-1200 125 315 1200 21 34 54 62 58 31 33 13
SIL 150-300 150 355 300 15 21 33 37 44 23 25 5
150-500 150 355 500 20 29 40 44 52 27 27 9
150-600 150 355 600 17 25 36 41 43 23 24 10
150-900 150 355 900 18 28 44 50 47 26 27 13
150-1000 150 355 1000 18 28 47 53 48 28 28 15
150-1200 150 355 1200 24 37 58 64 61 34 34 18
SIL 160-300 160 355 300 16 21 29 34 41 20 23 7
160-500 160 355 500 17 23 28 34 39 19 20 9
160-600 160 355 600 17 24 32 38 40 21 21 10
160-900 160 355 900 18 27 40 47 44 24 25 14
160-1000 160 355 1000 19 28 43 50 45 25 26 14
160-1200 160 355 1200 20 31 46 54 48 26 28 17
SIL 200-300 200 400 300 13 18 27 29 36 18 21 8
200-500 200 400 500 14 20 25 28 34 17 18 12
200-600 200 400 600 14 21 29 33 35 19 19 12
200-900 200 400 900 15 25 38 42 39 22 22 16
200-1000 200 400 1000 16 25 41 45 40 23 24 16
200-1200 200 400 1200 17 28 43 48 43 24 26 20
SIL 250-500 250 450 500 11 17 22 26 29 15 16 16
250-600 250 450 600 12 18 26 30 30 17 17 14
250-900 250 450 900 13 22 34 39 34 20 20 20
250-1000 250 450 1000 14 22 37 42 35 21 22 17
250-1200 250 450 1200 15 25 40 46 38 22 23 24
250-1500 250 450 1500 16 29 44 51 42 23 26 28
SIL 315-500 315 500 500 10 16 17 22 25 13 14 14
315-600 315 500 600 14 17 21 26 26 15 15 16
315-900 315 500 900 12 20 39 35 30 18 19 21
315-1000 315 500 1000 12 21 32 38 31 19 20 22
315-1200 315 500 1200 14 24 35 42 34 22 23 26
315-1500 315 500 1500 15 28 39 47 38 21 25 35
Description
Ød1
nom
[mm] Dnom
[mm] L
[mm] Sound insulation [dB] at frequency [Hz] Weight
[kg] 125250 500100020004000 8000
SIL 355-600 355 560 600 10 15 20 23 23 13 14 26
355-900 355 560 900 11 19 28 32 27 16 18 29
355-1000 355 560 1000 11 19 31 35 28 18 19 33
355-1200 355 560 1200 13 22 34 39 31 18 21 33
355-1500 355 560 1500 14 26 38 44 35 19 24 47
SIL 400-600 400 600 600 9 15 18 21 20 12 11 21
400-900 400 600 900 11 18 26 30 24 14 14 30
400-1000 400 600 1000 11 18 29 33 25 16 16 29
400-1200 400 600 1200 12 22 32 37 28 16 17 41
400-1500 400 600 1500 14 26 36 42 32 17 20 51
SIL 450-600 450 630 600 9 14 16 18 17 10 10 32
450-900 450 630 900 10 17 24 27 21 13 13 40
450-1000 450 630 1000 10 18 27 30 22 15 15 36
450-1200 450 630 1200 11 21 30 34 25 15 16 46
450-1500 450 630 1500 13 25 34 39 29 16 19 56
SIL 500-600 500 710 600 8 13 14 15 15 10 9 23
500-900 500 710 900 10 16 22 24 19 13 13 35
500-1000 500 710 1000 10 17 25 27 20 14 14 39
500-1200 500 710 1200 11 20 28 31 23 15 16 43
500-1500 500 710 1500 13 24 32 36 27 16 19 50
SIL 560-900 560 800 900 5 9 15 19 13 12 14 39
560-1000 560 800 1000 7 10 16 20 14 13 15 53
560-1200 560 800 1200 9 13 18 21 15 15 16 56
560-1500 560 800 1500 10 14 20 24 18 17 19 46
SIL 630-900 630 800 900 8 15 20 22 17 11 11 50
630-1000 630 800 1000 9 15 23 25 18 12 12 48
630-1200 630 800 1200 10 18 26 29 21 13 14 58
630-1500 630 800 1500 11 22 29 34 25 14 17 66
SIL 710-1000 710 900 1000 8 14 20 23 16 11 10 59
710-1200 710 900 1200 9 17 23 27 18 11 12 64
710-1500 710 900 1500 11 21 26 30 22 12 15 73
SIL 800-1000 800 10001000 8 14 20 22 15 10 10 0
800-1200 800 10001200 9 17 22 25 18 11 12 73
800-1500 800 10001500 10 21 26 30 22 12 15 103
SIL 900-1000 900 1120 1000 7 13 19 20 13 9 10 80
900-1200 900 1120 1200 8 16 22 24 16 10 11 88
900-1500 900 1120 1500 10 20 26 29 20 11 14 95
Pressure drop
SIL-100 – 100 mm insulation
Description
Pressure loss [Pa] at air flow velocity [m/s] 2 4 8 10 12
SIL-100-100-500 0.26 1.04 4.15 6.48 9.33
SIL-100-100-600 0.28 1.13 4.53 7.08 10.20
SIL-100-100-900 0.34 1.34 5.38 8.40 12.10
SIL-100-100-1000 0.35 1.40 5.61 8.76 12.61
SIL-100-100-1200 0.37 1.50 5.99 9.36 13.48
SIL-100-125-300 0.19 0.77 3.07 4.80 6.91
SIL-100-125-500 0.25 0.99 3.96 6.18 8.90
SIL-100-125-600 0.27 1.08 4.34 6.78 9.76
SIL-100-125-900 0.33 1.31 5.22 8.16 11.75
SIL-100-125-1000 0.34 1.36 5.45 8.52 12.27
SIL-100-125-1200 0.36 1.46 5.84 9.12 13.13
SIL-100-150-300 0.18 0.72 2.88 4.50 6.48
SIL-100-150-500 0.24 0.94 3.76 5.88 8.47
SIL-100-150-600 0.26 1.04 4.15 6.48 9.33
SIL-100-150-900 0.31 1.25 4.99 7.80 11.23
SIL-100-150-1000 0.33 1.31 5.22 8.16 11.75
SIL-100-150-1200 0.35 1.40 5.61 8.76 12.61
SIL-100-160-300 0.17 0.67 2.69 4.20 6.05
SIL-100-160-500 0.23 0.91 3.65 5.70 8.21
SIL-100-160-600 0.25 1.01 4.03 6.30 9.07
SIL-100-160-900 0.31 1.23 4.92 7.68 11.06
SIL-100-160-1000 0.32 1.29 5.15 8.04 11.58
SIL-100-160-1200 0.35 1.38 5.53 8.64 12.44
SIL-100-200-300 0.16 0.64 2.57 4.02 5.79
SIL-100-200-500 0.20 0.82 3.26 5.10 7.34
SIL-100-200-600 0.23 0.91 3.65 5.70 8.21
SIL-100-200-900 0.28 1.12 4.49 7.02 10.11
SIL-100-200-1000 0.30 1.18 4.72 7.38 10.63
SIL-100-200-1200 0.32 1.28 5.11 7.98 11.49
SIL-100-250-500 0.17 0.67 2.69 4.20 6.05
SIL-100-250-600 0.19 0.77 3.07 4.80 6.91
SIL-100-250-900 0.24 0.98 3.92 6.12 8.81
SIL-100-250-1000 0.26 1.04 4.15 6.48 9.33
SIL-100-250-1200 0.28 1.13 4.53 7.08 10.20
SIL-100-250-1500 0.31 1.25 4.99 7.80 11.23
SIL-100-315-600 0.14 0.57 2.27 3.54 5.10
SIL-100-315-900 0.19 0.78 3.11 4.86 7.00
SIL-100-315-1000 0.21 0.84 3.34 5.22 7.52
SIL-100-315-1200 0.23 0.93 3.72 5.82 8.38
SIL-100-315-1500 0.26 1.05 4.19 6.54 9.42
Description
Pressure loss [Pa] at air flow velocity [m/s] 2 4 8 10 12
SIL-100-355-500 0.12 0.47 1.88 2.94 4.23
SIL-100-355-600 0.11 0.44 1.77 2.76 3.97
SIL-100-355-900 0.17 0.66 2.65 4.14 5.96
SIL-100-355-1000 0.18 0.71 2.84 4.44 6.39
SIL-100-355-1200 0.20 0.81 3.23 5.04 7.26
SIL-100-355-1500 0.23 0.93 3.72 5.82 8.38
SIL-100-400-600 0.08 0.32 1.27 1.98 2.85
SIL-100-400-900 0.13 0.53 2.11 3.30 4.75
SIL-100-400-1000 0.15 0.59 2.34 3.66 5.27
SIL-100-400-1200 0.17 0.68 2.73 4.26 6.13
SIL-100-400-1500 0.20 0.80 3.19 4.98 7.17
SIL-100-450-600 0.05 0.19 0.77 1.20 1.73
SIL-100-450-900 0.10 0.40 1.61 2.52 3.63
SIL-100-450-1000 0.12 0.46 1.84 2.88 4.15
SIL-100-450-1200 0.14 0.56 2.23 3.48 5.01
SIL-100-450-1500 0.17 0.67 2.69 4.20 6.05
SIL-100-500-600 0.02 0.08 0.31 0.48 0.69
SIL-100-500-900 0.07 0.29 1.15 1.80 2.59
SIL-100-500-1000 0.09 0.35 1.38 2.16 3.11
SIL-100-500-1200 0.11 0.44 1.77 2.76 3.97
SIL-100-500-1500 0.14 0.56 2.23 3.48 5.01
SIL-100-560-900 0.05 0.19 0.77 1.21 1.74
SIL-100-560-1000 0.06 0.25 0.99 1.54 2.22
SIL-100-560-1200 0.09 0.34 1.37 2.15 3.09
SIL-100-560-1500 0.12 0.47 1.88 2.93 4.23
SIL-100-630-900 0.02 0.10 0.38 0.60 0.86
SIL-100-630-1000 0.04 0.14 0.58 0.90 1.30
SIL-100-630-1200 0.06 0.24 0.96 1.50 2.16
SIL-100-630-1500 0.09 0.36 1.46 2.28 3.28
SIL-100-710-1000 0.02 0.08 0.31 0.48 0.69
SIL-100-710-1200 0.04 0.17 0.69 1.08 1.56
SIL-100-710-1500 0.07 0.30 1.19 1.86 2.68
SIL-100-800-1000 0.01 0.04 0.15 0.24 0.35
SIL-100-800-1200 0.03 0.13 0.54 0.84 1.21
SIL-100-800-1500 0.06 0.25 1.00 1.56 2.25
SIL-100-900-1000 0.00 0.01 0.04 0.06 0.09
SIL-100-900-1200 0.03 0.11 0.42 0.66 0.95
SIL-100-900-1500 0.06 0.23 0.92 1.44 2.07
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