Silencers

silencers products

Freudenberg Filtration Technologies are suppliers and manufacturers of silencers that attenuate the main source of noise in blowers, vacuum pumps and compressors.

MIS - Intake Silencers

A combination of a compact filter and absorptive silencer.

A range of silencers is offered to attenuate the main source of noise in blowers, vacuum pumps and compressors. The main source of noise can usually be traced to the air intake and the exhaust.

Various Intake Silencer options for filter media are available to meet all efficiency requirements.

Normally acceptable inlet silencer pressure drop is in the range of 8 to 10 inches water gauge. All Microfresh inlet silencers will meet this criteria if properly sized to the air capacity.

silencerintake silencer diagram

 

Legend

A Nominal bore

B Outside Diameter

C Length of Body

D Overall Flange to Flange Dimensions

E Flange Face to Body

F Flange

G Minimum Distance End Body to Centre Side Flange

H Height of Filter Element Housing

 

Model No.ABCDEFGHElement
Model No.
FAD Nominal
Weight
inchmminchmminchmminchmminchmminchmminchmminchmmL/sCFMKGlbs
MIS 1
1
25
33/8
85
9
229
11
280
3/4
20
-
-
-
-
11/4
32
MF 0
14 30 2
4.4
MIS 11/4
11/4
32
43/4
120
9
229
133/16
335
1
26
-
-
-
-
33/16
81
MF1
24 50 3
6.6
MIS 11/2
11/2
38
43/4
120
12
305
167/16
418
11/4
32
-
-
-
-
33/16
81
MF 1
33 70 3.5
7.7
MIS 2
2
50
55/8
145
16
407
2011/16
526
11/2
39
-
-
23/4
70
33/16
81
MF 2
60 125 4.5
9.9
MIS 21/2
21/2
65
55/8
145
16
407
2015/16
532
13/4
45
-
-
3
77
33/16
81
MF 2
85 180 5
11
MIS 3
3
80
71/16
180
18
458
253/16
639
17/8
48
-
-
31/2
89
51/4
134
MF 3
142 300 7
15.4
MIS 4
4
100
81/16
205
235/8
601
317/8
810
2
51
-
-
41/2
115
61/4
159
MF 4
212 300 13
28.6
MIS 5
5
125
95/8
245
235/8
601
331/8
842
2
51
-
-
6
153
71/2
191
MF 5
307 650 17
37.4
MIS 6
6
150
105/8
270
293/4
756
415/8
1058
3
77
-
-
61/2
166
87/8
226
MF 6
425 900 23
50.6
MIS 7
7
175
143/8
365
357/16
901
50
1270
3
77
-
-
9
229
111/4
286
MF 7
660 1400 36
79.2
MIS 8
8
200
163/8
415
357/16
901
521/4
1328
3
77
-
-
9
229
131/2
343
MF 8
850 1800 42
92.4
MIS 9
9
225
201/4
515
357/16
901
58
1474
3
77
-
-
10
254
191/4
489
MF 9
1180 2500 70
154
MS 10
10
250
201/4
515
42
1067
641/4
1632
3
77
-
-
10
254
191/4
489
MF 10
1416 3000 85
187
MIS 12
12
300
24
610
50
1270
72
1829
4
102
-
-
12
305
18
458
MF 12
1699 3600 100
220
MIS 14
14
350
30
760
54
1372
76
1931
4
102
-
-
12
305
18
458
MF 14
2595 5500 135
297
MIS 16
16
400
30
760
65
1651
90
2286
4
102
-
-
14
355
21
534
MF 16
3303 7000 170
374

MDS - Discharge Silencers

A combination of a compact filter and absorptive silencer.

An absorptive packed, straight through type silencer with low pressure drop.

discharge silencer diagram

A range of silencers is offered to attenuate the main source of noise in blowers, vacuum pumps, compressors etc. The main source of noise can usually be traced to the air intake and the exhaust.

insertion loss graph

 

 

 

Legend

A Nominal bore

B Outside Diameter

C Length of Body

D Overall Flange to Flange Dimensions

E Flange Face to Body

 
 

Model
No.
A BCDE NOMINAL WEIGHTFAD
in"mmin"mmin"mmin"mmin"mmlbskgL/sCFM
MDS 1
1
25
31/2
90
141/2
369
16
407
3/4
20
4.4
2
14
30
MDS 11/4
11/4
32
43/4
120
141/2
369
161/2
420
1
26
7.7
3.5
14-24
30-50
MDS 11/2
11/2
38
43/4
120
231/2
597
26
661
11/4
32
9.9
4.5
24-33
50-70
MDS 2
2
50
511/16
145
291/2
750
321/2
826
11/4
39
16.5
7.5
33-60
70-125
MDS 21/2
21/2
65
61/8
155
291/2
750
33
839
13/4
45
17.6
8
60-85
125-180
MDS 3
3
80
7
180
291/2
705
391/4
845
17/8
48
22
10
85-142
180-300
MDS 4
4
100
91/32
230
357/16
901
391/2
1004
2
51
46.2
21
142-212
300-450
MDS 5
5
125
12
305
357/16
901
391/2
1004
2
51
77
35
212-307
450-650
MDS 6
6
150
14
355
471/4
1201
531/2
1359
3
77
92.4
42
307-425
650-900
MDS 7
7
175
14
355
471/4
1201
531/2
1359
3
77
121
55
425-660
900-1400
MDS 8
8
200
163/8
415
59
1499
65
1651
3
77
156
71
660-850
1400-1800
MDS 9
9
225
163/8
415
59
1499
65
1651
3
77
172
78
850-1180
1800-2500
MDS 10
10
250
201/4
515
71
1804
77
1956
3
77
286
130
1180-1416
2500-3000
MDS 12
12
300
24
610
95
2413
103
2617
4
102
330
150
1416-1699
3000-3600
MDS 14
14
350
24
610
95
2413
103
2617
4
102
374
170
1699-2595
3600-5500
MDS 16
16
400
30
760
104
2642
112
2845
4
102
627
285
2595-3303
5500-7000
MDS 18
18
450
301/8
765
104
2642
112
2845
4
102
649
295
3303-3775
7000-8000
MDS 20
20
500
301/8
765
118
2998
126
3201
4
102
715
325
3775-4247
8000-9000

 

Freudenberg Filtration Technologies | Microfresh® Industrial Filtration Silencers Australia.