MSA2 Model

MAXIM SILENCER APPLICATIONS

Size A B C N O P Est. Wt.
1 1/2" 8 1/2 30 1 1/2 - - - 23
2" 8 1/2 30 2 - - - 24
2 1/2" 10 1/4 34 2 1/2 - - - 36
3" 12 38 3 - - - 48
3 1/2" 14 42 3 1/2 - - - 70
4" 14 48 4 5 1/2 10 45 110
5" 16 55 5 6 1/2 11 52 1/4 120
6" 18 63 6 7 12 60 1/4 170
8" 22 76 8 8 1/2 14 73 1/2 285
10" 26 91 10 10 1/2 16 1/2 88 460
12" 30 109 12 12 18 1/2 106 1/4 745
14" 36 102 14 14 21 1/2 99 1/4 965
16" 40 119 16 17 23 1/2 116 1/2 1340
18" 45 127 18 19 26 1/2 124 1850
20" 50 144 20 21 29 141 1/4 2175
22" 54 161 22 22 31 158 1/4 2650
24" 60 165 24 24 34 162 1/4 3400
26" 64 183 26 26 36 180 1/2 3850
28" 68 200 28 27 38 197 3/4 4840
30" 72 216 30 29 40 213 3/4 5150
* Sizes 11/2“ to 31/2“ have MNPT connections.
Note: Dimensions are in inches, weights are in pounds.

Typical Applications: Features: Optional Accessories:
• Internal combustion engine
exhausts
• High efficient spark arresting
capability
• Advanced acoustical design
• Heavy duty, all welded
construction and long
service life
• Easily installed in any
position
• Prime coated exterior finish
• Backfire relief covers
• Flexible connectors
• Companion flanges
• Cleanout openings
• Side inlets
• Horizontal or vertical
support arrangements
• Special painting
Sample Specification:
The silencer shall be a MAXIM Model MSA2 for better noise control in applications requiring spark arresting capability. The construction shall be heavy wall, all welded, carbon steel construction and protected by a single coat of shop primer. The design of the silencer shall be suitable for mounting in any position and shall be complete with the following available options:

MSA4 – Best Chamber Type Spark
Arresting– Expected Attenuation is 28 to
32dBA

Use a model MSA4 for the highest degree of “critical”
grade silencing for areas requiring “hospital quiet”
noise reductions and spark arresting feature.

The MSA4 is presently the top-of-the-line silencer
without resorting to multiple silencers in series or
custom designed silencers.

MSA3 – Excellent Chamber Type Spark
Arresting– Expected Attenuation is 24 to 28
dBA

Use a model MSA3 for quiet residential areas where
background noise is relatively low and “critical” grade
silencing with spark arresting feature is required.

Example: For truly quiet residential areas where ambient
noise levels are very low and the sounds of birds
singing and the soft hum of air conditioning units may
be the noticeable noise features.

MSA2 – Better Chamber Type Spark
Arresting– Expected Attenuation is 21 to 24
dBA

Use a model MSA2 in residential areas where
background noise is present but not objectionable and
spark arresting feature is desired. In these areas,
installation of an MSA2 on an engine exhaust is
intended to bring the noise level down to match the
ambient noise levels.

Example: In a quieter residential areas off the main
traffic areas and away from constant noise sources.

MSA1 – Good Chamber Type Spark Arresting– Expected Attenuation is 17 to 20 dBA

Use a model MSA1 in residential and light industrial
areas for spark arresting capability where background
noise is relatively high and constant and the need for
higher degrees of silencing is minimal.

Example: In residential neighborhoods having high
traffic or light industry with relatively constant
background noise. Residents in these areas are
typically accustomed to the noise or make some efforts
to shield themselves from the ever present background
noise . Use of an MSA1 can keep engine exhaust noise
within existing noise levels.