Milton CAT D175-2 175 kW Standard Style Critical Grade Silencer Information User Manual
Jb series, Engine silencers, Silencers - cylindrical
JB Series
25 - 32 dBA
Critical Grade
8 0 0 3 8 7 7 8 1 8
Engine Silencers
Silencer Selection
Call Silex for immediate assistance in
selecting the appropriate silencer that best
suits your application’s acoustical and
backpressure requirements or consult the
silencer selection guide in our catalogue. You
can also use Silex’s exclusive Silencer Sizing
and Selection Program “Silex Digital
Engineer” found on the Company’s secure
website at www.silex.com.
Application & Performance
The Critical Grade series are reactive silencers.
All of the silencers are manufactured from light
to heavy gauge steel and finished with high
temperature paint. Flanges are ANSI 125/150#
and a drain is included as a standard component
on the silencer.
Dimensions
Model A
B
C
D
F**
G
H
Wgt.
JB-1.5 1.5
9
(229)
24
(610)
30
(762)
4.0
(102)
7.5
(191)
27
(686)
21
(10)
JB-2
2
9
(229)
24
(610)
30
(762)
4.5
(114)
7.5
(191)
27
(686)
22
(10)
JB-2.5 2.5
10
(254)
28
(711)
34
(864)
5.0
(127)
8.0
(203)
31
(787)
31
(14)
JB-3
3
12
(305)
32
(813)
38
(660)
5.5
(140)
9.0
(229)
35
(889)
44
(20)
JB-3.5 3.5
14
(356)
36
(914)
42
(1067)
6.0
(152)
10.0
(254)
39
(991)
63
(29)
JB-4
4
14
(356)
40
(1016)
48
(1219)
6.0
(152)
11.0
(279)
44
(1118)
77
(35)
JB-5
5
16
(406)
49
(1245)
57
(1448)
7.0
(178)
12.0
(305)
53
(1346)
103
(47)
JB-6
6
18
(457)
55
(1397)
63
(1600)
8.0
(203)
13.0
(330)
59
(1499)
130
(59)
JB-8
8
22
(559)
68
(1727)
76
(1930)
9.5
(241)
15.0
(381)
72
(1829)
204
(93)
JB-10
10
26
(660)
81
(2057)
89
(2261)
11.5
(292)
17.0
(432)
85
(2159)
401
(182)
JB-12
12
30
(762)
94
(2388)
102
(2591)
13.0
(330)
19.0
(483)
98
(2489)
535
(243)
JB-14
14
36
(914)
99
(2515)
109
(2769)
15.5
(394)
23.0
(584)
104
(2642)
684
(310)
JB-16
16
40
(1016)
109
(2769)
119
(3023)
16.5
(419)
25.0
(635)
114
(2896)
1114
(505)
JB-18
18
45
(1143)
117
(2972)
127
(3226)
18.0
(457)
27.5
(699)
122
(3099)
1579
(716)
JB-20
20
50
(1270)
127
(3226)
137
(3480)
20.5
(521)
30.0
(762)
132
(3353)
2189
(993)
JB-22
22
54
(1372)
139
(3531)
149
(3785)
22.5
(572)
32.0
(813)
144
(3658)
2538
(1151)
JB-24
24
60
(1524)
152
(3861)
162
(4115)
24.0
(610)
35.0
(889)
157
(3988)
3116
(1413)
JB-26
26
64
(1626)
173
(4394)
183
(4648)
25.5
(648)
37.0
(940)
178
(4521)
3778
(1714)
JB-28
28
68
(1727)
190
(4826)
200
(5080)
26.5
(673)
39.0
(991)
195
(4953)
4342
(1970)
JB-30
30
72
(1829)
206
(5232)
216
(5486)
28.0
(711)
41.0
(1041)
211
(5359)
4946
(2244)
Lit-0011 05-11
**For F dimension other than that specified, please contact Silex.
Available in sizes up to 60” inlet
Options
— Aluminized steel, 304, 316 or 316L stainless steel, Corten Steel
— Dual inlet or Custom inlet/outlet configurations
— Thermal insulation blankets to suit all configurations
— Mounting brackets, gussets and lifting lugs available at additional cost
Silencers - Cylindrical
ST
SI
SISO612
SO12
Typical Orientations
JB-6
Attenuation - dB
Octave Band Cente
r Frequency - Hz
63
125 250 500 1K 2K
4K
8K
60
50
40
30
20
10
0
Typical Attenuation Curve
JB-18
Attenuation - dB
Octave Band Cente
r Frequency - Hz
63
125 250 500 1K 2K
4K
8K
60
50
40
30
20
10
0
JB-12
Attenuation - dB
Octave Band Cente
r Frequency - Hz
63
125 250 500 1K 2K
4K
8K
60
50
40
30
20
10
0
Metric dimensions rounded to nearest mm.
Dimensions and weights are nominal and may vary slightly in
production models.
The inlet and discharge on silencers up to 3½" are
Sch. 40 NPT pipe. On silencers 4" and larger the inlet
and discharge are flanged, manufactured from minimum
½" thick plate and drilled to ANSI 150 lb.
Silex Innovations Inc.
Phone
905 612 4000
Fax
905 612 8999
w w w . s i l e x . c o m