Chamber Type Silencers |
|
Chamber type silencers provide the best noise control across the entire
audible range. The basic design incorporates non-resonant side tube
arrangements to permit passage of the exhaust gases from one chamber to
another. This creates a reversal of flow and develops a predictable
amount of back pressure. Another important feature of chamber type
silencers is the availability of side inlet exhaust connections. Units
of this type, except for spark arrestor designs, can also be supplied
with side outlet exhaust connections. These side connections, while
having little effect on the pressure drop, will in many instances
greatly facilitate installation of the silencer by eliminating the need
for elbows in the exhaust piping.
|
| Silencer Models |
| M22 | Residential
grade chamber type silencer. Use a model M22 in residential and light
industrial areas where background noise is relatively high and constant
and the need for higher degrees of silencing is minimal. Expected
attenuation is 20 to 25 dBA. |
| M32 | Semi-Critical
grade chamber type silencer. Use a model M32 in residential areas where
background noise is present but not objectionable. In these areas,
installation of an M32 on an engine exhaust is intended to bring the
noise level down to match the ambient noise levels. Expecteded
attenuation is 25 to 32 dBA. |
| M42 | Critical
grade chamber type silencer. Use a model M42 for quiet residential
areas where background noise is relatively low and “critical†grade
silencing is required. Expected attenuation is 30 to 38 dBA. |
| M52 | Hospital
grade chamber type silencer. Use a model M52 for “hospital grade†noise
reduction in heavy industrial areas where machinery operates
continously around quiet locality. Such as hospitals, shools and quiet
residential districts. Expected attenuation is 35 to 42 dBA. |
| M62 | Hospital
plus grade chamber type silencer. Use a model M62 for the highest
degree of silencing in areas requiring “hospital plus†noise
reductions. The M62 is presently the top-of-the-line silencer without
resorting to multiple silencers in series or custom designed silencers.
Expected attenuation is 35 to 50 dBA. |
Compact Chamber Silencers |
|
Compact chamber silencers are engineered to provide “critical†to
"hospital" grade attenuation, while minimizing space usage. They are an
excellent choice for packaged power and process skids where space is a
premium. Dual inlets and other custom designs can be easily
incorporated. Low temperature design not only reduces skin temperature,
but radiated noise as well. These units feature heavy duty, welded
construction with temperature resistant insulation within a double wall
construction. The inlet and outlets are standard with ANSI drilled
125/150 lb flanges. Standard finish is high temperature resistant
silicone black. Alternate finishes are available upon request. Standard
material is carbon steel, but stainless steel construction is
available. |
| Silencer Models |
| MD32 | Expected attenuation is 25-32 dBA |
| MD42 | Expected attenuation is 30-37 dBA |
| MD52 | Expected attenuation is 35-42 dBA |
Thin Line Chamber Silencers |
|
Thin Line chamber silencers are engineered to provide “critical†to
"hospital" grade attenuation, while minimizing space usage. They are an
excellent choice enclosures and marine applications where height and
space is a premium. Dual inlets and other custom designs can be easily
incorporated. Low temperature design not only reduces skin temperature,
but radiated noise as well. These units feature heavy duty, welded
construction with temperature resistant insulation within a double wall
construction. The inlet and outlets are standard with ANSI drilled
125/150 lb flanges. Standard finish is high temperature resistant
silicone black. Alternate finishes are available upon request. Standard
material is carbon steel, but stainless steel construction is
available. |
| Silencer Models |
| MR32 | Expected attenuation is 25-35 dBA |
| MR42 | Expected attenuation is 30-30 dBA |
| MR52 | Expected attenuation is 35-50 dBA |
| MR62 | Expected attenuation is 35-55 dBA |
Chambered Spark Arresting Silencers |
|
Spark arresting applications include marine service, refineries and
other hazardous environments. These units have chamber type designs.
The retention of hot carbon and soot particles minimizes danger and
helps provide a cleaner area and atmosphere.
|
| Silencer Models |
| MSA11 | Residential
grade chamber type, spark arresting silencer. Usa a model MSA11 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. Expected attenuation is 20 to
25 dBA. |
| MSA22 | Semi-Critical
grade chamber type, spark arresting silencer. Use a model MSA22 in
residential areas where background noise is present but not
objectionable and a spark arresting feature is desired. In these areas,
installation of an MSA22 on an engine exhaust is intended to bring the
noise level down to match the ambient noise levels. Expected
attenuation is 25 to 32 dBA. |
| MSA33 | Critical
grade chamber type, spark arresting silencer. Use a model MSA33 for
quiet residential areas where background noise is relatively low and
“critical†grade silencing with a spark arresting feature is required.
Expected attenuation is 30 to 38 dBA. |
| MSA44 | Hospital
grade chamber type, spark arresting silencer. Use a model MSA44 for
areas requiring “hospital grade†noise reductions and a spark arresting
feature. The MSA44 is presently the top-of-the-line reactive silencer
without the addition of accoustical insulation. Expected attenuation is
35 to 42 dBA. |
| MSA55 | Hospital
plus grade chamber type, spark arresting silencer. Use a model MSA55
for the highest degree of silencing in areas requiring both “hospital
plus grade†noise reductions and a spark arresting feature. Expected
attenuation is 35 to 50 dBA. |
Low Pressure Drop/Turbo Silencers |
|
Straight through silencers have an unobstructed passage through the
silencer with no flow reversal. The result is a pressure drop across
the silencer only slightly above that caused by an equivalent length of
pipe. Side connections are not practical in this design due to an
increase in pressure drop and price. Noise attenuation provided by
straight through design is less than that provided by chamber design
silencers incorporating a flow reversal. As a result, the MT series is
best used in applications where low pressure drop is the primary
consideration.
|
| Silencer Models |
| MT22 | Residential
grade straight through, low pressure drop silencer. Use an MT22 for
silencing in areas where background noise is relatively high and
moderate silencing is needed and requirements call for a low pressure
drop silencer. Expected attenuation is 20 to 25 dBA. |
| MT32 | Semi-Critical
grade straight through, low pressure drop silencer. Use an MT32 for
average silencing in areas where some background noise is always
present and effective, but not complete, silencing is needed and
requirements call for a low pressure drop silencer. Expected
attenuation is 25 to 32 dBA. |
| MT42 | Critical
grade straight through, low pressure drop silencer. Use an MT42 for
better than average silencing in areas where ambient noise is
relatively low and back pressure requirements call for a low pressure
drop silencer. Expected attenuation is 30 to 38 dBA. |
| MT52 | Hospital
grade straight through, low pressure drop silencer. Use an MT52 for
"hospital grade" noise reduction in areas where ambient noise is
relatively low and back pressure requirements call for a low pressure
drop silencer. Expected attenuation is 35 to 42 dBA. |
Blower Silencers |
|
Featuring a highly efficient acoustic design, the MB series is used to
reduce the noise radiating from blower piping or the blower opening.
Typical applications are rotary positive blower intake and discharge,
vacuum pump intake and discharge, and centrifugal blower intake and
discharge.
|
| Silencer Models |
| MB11 | With
its straight through acoustically packed design the MB11 offers good
silencing for many blower applications. Typical attenuation is 15 to 30
dBA. |
| MB21 | An
efficient economical design, the MB21 is useful for blower noise
reduction in applications where some background noise is always present
and high degrees of silencing is not required. Typical attenuation is
15 to 30 dBA. |
| MB31 | A
superior design, the MB31 incorporates an acoustically packed
connection with a chamber type design to offer a high degree of
attenuation of blower intake or discharge noise. Typical attenuation is
about 30 dBA. |
Marine Engine/Wet Exhaust Silencers |
|
Constructed of 316L stainless steel, the MAXIM MP series silencers are
available for wet marine engine exhaust applications. Water is injected
upstream of the silencer in sufficient quantity to reduce the exhaust
temperature to a maximum of 200 oF. The MP11 may be installed in series
with an MP31 or MP41 to provide additional attenuation.
|
| Silencer Models |
| MP11 | Low pressure drop with good performance. Expected attenuation is 15 to 18 dBA. |
| MP31 | Medium pressure drop with better performance. Expected attenuation is 20 to 25 dBA. |
| MP41 | Highest performance for wet exhaust application. Expected attenuation is 30 to 35 dBA. |
