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The following is an exert from Maxim's old web site. Follow the links if desired but for the new information please go to MAXIM 2005
Give me a call if you need any assistance or if you would like to place an order.
1-251-928-1234-Mark Coulson
ENGINE INTAKE AND EXHAUST SILENCERS
In
simple terms, silencing is the act of reducing noise to an acceptable level
for the location or working conditions surrounding the noise producing
equipment. MAXIM's complete line of stock and standard design silencers
readily solves noise problems of many applications.
INTAKE SILENCERS - Absorptive Designs:
FPE - Recommended for use where a low pressure drop is mandatory and a medium degree of high frequency noise reduction is required. Available sizes: 1" through 30" connection sizes
FPC - Recommended for use where a medium to high degree of noise reduction is required. Available sizes: 14" through 36" connection sizes (larger sizes on request).
FPS - Recommended where a high degree of high frequency noise reduction is required. Available sizes: 6" through 30" connection sizes (larger sizes on request).
EXHAUST SILENCERS:MAXIM's complete line of stock and standard design silencers readily solves noise problems of many applications.
CHAMBER TYPE, REACTIVE 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. Side connections will, in many instances, greatly facilitate installation of the silencer by eliminating the need for elbows in the piping systems.
M21 - Industrial Grade - 20 dbA overall attenuation. For silencing requirements in industrial areas where background noise is relatively high.
M31 - Medium Grade - 24 dbA overall attenuation. For silencing in semi-residential areas where some background noise is present but not objectionable.
M41 - Critical Residential Grade - 28 dbA overall attenuation. For high degree, critical grade silencing for use where equipment must operate in quiet residential areas.
M51 - Hospital Critical Grade - 32 dbA overall attenuation. Designed to provide the highest degree of silencing and will successfully meet the requirements of the most critical type of application.
CHAMBER TYPE, SPARK ARRESTING SILENCERS:MUL - Small engine silencer comparable to M31 attenuation.
MSA1 - Industrial Grade - 20 dbA overall Attenuation. Highly efficient spark arresting silencer with M21 silencing characteristics.
MSA2 - Medium Grade - 24 dbA overall Attenuation. Highly efficient spark arresting silencer with M31 silencing characteristics.
MSA3 - Critical Residential Grade - 28 dbA overall Attenuation. Highly efficient spark arresting version of the M41.
CHAMBER TYPE, LOW PRESSURE DROP DESIGN SILENCERS:MSA4 - Hospital Critical Grade - 32 dbA overall Attenuation. Highly efficient spark arresting version of the M51.
MT21 - Low Pressure Drop - 16 dbA overall Attenuation. For use in industrial areas where background noise levels are comparatively high and very low back pressure is required.
MT31 - Low Pressure Drop - 19 dbA overall Attenuation. For moderate degree of mid-range octave band attenuation and with very low back pressure.
MARINE ENGINE APPLICATIONS, WET EXHAUST SYSTEMS:MT41 - Low Pressure Drop - 22 dbA overall Attenuation. For a high degree of noise suppression in mid-range octave bands and with very low back pressure.
MP11 - Low Pressure Drop - 18 dbA overall Attenuation. Fiberglass construction offers relatively low weight and good performance for wet marine applications. Can be used in series with either MP31 or MP41 for additional attenuation.
MP31 - Medium Grade Silencing - 25 dbA overall Attenuation. Fiberglass construction offers relatively low weight. The MP31 design provides better attenuation and medium pressure drop for wet marine exhaust applications.
MP41 - High Grade Silencing - 35 dbA overall Attenuation. The fiberglass MP41 design offers the best performance for wet marine applications.
GAS TURBINE SILENCERS:
SSES and MGTE - Absorptive, concentric panel, exhaust silencers with low pressure drop and high noise reduction when used on the exhaust of gas turbines. Typical construction is carbon steel with mineral wool or fiberglass acoustical packing. Stainless steel internals (304 s.s. or 409 s.s.) are available.