Engine Exhaust Silencers - Universal: Acoustic Silencers

2.1 2.1Use one of two methods outlined belowto determine which silencing solution isoptimal for your application.GeneralInformationStandard Engine SilencersEngine ExhaustRotary Silencers PositiveBlower SilencersMethod 1You must know the following information:A exhaust flow rate (CFM)B silencer inlet size (ft 2 )C level of silencing requiredCalculate exhaust gas velocity by dividingthe flow rate by the pipe area:exhaust flow rate (CFM)silencer inlet pipe area (ft 2 )Reference the pressure drop tables in thesilencer spec sheets located on pages 2.3and 2.7. Using the calculated exhaust gasvelocity, find the corresponding estimatedpressure drop on the table. If you haveselected a silencer that achieves yoursilencing level requirements at an acceptablepressure drop level, you have identified thesilencer that is right for you!Exhaust Flow Rate EstimationIf exhaust flow rate is unavailable, estimatethrough the following equation:Regardless of the method you choose, theengine’s exhaust flow rate (CFM) may be amystery. If this is the case, use the abovetitled equation Exhaust Flow RateEstimation. After estimating the exhaustflow rate, proceed with Method 1 or 2.Silencer recommendations followingMethod 2 are based on 1" Hg restriction andare only estimations. Consideringuncontrolled variables such as pipingsystems, tail pipe loss, suddenexpansion/contraction, flex, etc., it isrecommended that you select a unit onesize larger or a low pressure unit (page 2.8)if either (a) the back pressure exceeds 1" Hgacross the silencer, or (b) the back pressureis more than 50% of the allowable backpressure for the exhaust system (use thesmaller of the two).What Else Should I Know?Universal brand exhaust silencers provideoptimum performance for all applications byoffering silencers crafted for four differentattenuation grades. Due to the variability ofdifferent applications, performance levelsare most accurately shown as broad range“expected attenuation bands,” which arebased upon typical conditions. These bandswill not define the exact insertion loss for aspecific application, since insertion loss isinfluenced by engine size, type, speed andunsilenced noise levels (see product specsheets for attenuation, back pressure anddesign details).NotesKeep in mind that silencers are not designedto support their weight from the inlet oroutlet tube, or support other components ofthe exhaust system, such as stacks. For themost efficient operation of all silencing units,proper mounting attachments are required.See page 1.1 for ordering information | www.universalAET.com 1 2 3 4estimated exhaust flow rate =Quick Selection TableD (in 3 ) full load rpm E (T° 460°)C 941,760D = displacement in in 3E = 0.85 efficiency for naturallyaspirated engines= 1.2 for engines with scavenging blower= 1.4 for turbo-charged enginesT = exhaust temperature; if unknown,use 900°F for diesel and 1,200°F forgas enginesC = 1.0 (two-cycle engine)or 2.0 (four-cycle engine)Method 2If your pressure drop requirement is 1.0" Hg(approximately 13.62" H 2 O) or less andexhaust flow rates are known, use the quickselection table below to select the mostappropriate silencer without performing anycalculations at all!InletPipe Area(ft 2 ).0031.0055.0085.0123.0218.0341.0491.0668.0873.1363.1963.3491.5454.78541.0691.4381.7602.1802.640PipeDimension(in/mm).75/19.11.0/25.41.25/31.81.5/38.12.0/50.82.5/63.53.0/76.23.5/88.94.0/101.65.0/127.06.0/152.48.0/203.210.0/254.012.0/304.814.0/355.616.0/406.418.0/457.220.0/508.022.0/558.8IndustrialSilencer41731131632884506508801,1601,8102,6004,6007,20010,20014,00018,00023,00028,40034,400ResidentialSilencer3563981422503805657701,0001,5802,2503,9006,2008,80012,00015,50019,80024,30029,500CriticalSilencer2952801172063254706408301,2901,8703,3405,2007,50010,20013,70016,80020,90025,300HospitalSilencer————————7901,2901,7703,1504,9507,1009,70013,00016,00019,70024,000Note: Find the lowest flow rate greater than or equal to the engine flow rate at the required silencing level. Exhaustflow rates are based on end-in end-out silencers. Refer to product spec sheets when determining side-in or middleside-in back pressure. Velocity should not exceed 15,000 ft/min regardless of the allowable back pressure(10,000 ft/min for spark arresting silencers).

2.2Rotary Engine Positive ExhaustBlower Silencers SilencersProductSpecificationsStandard Engine SilencersDrains are standard on all models with a 9"O.D. or larger. Models 26" or smaller have acoat of high heat-resistant paint. Modelslarger than 26" O.D. have a rust inhibitingprimer under high heat-resistant paint.Maximum operating temperature is 1,250°Ffor aluminized units. Heat-resistant paintmaintains its properties up to 900°F onaluminized steel and 1,100°F on mild steel.See page 1.1 for ordering information | www.universalAET.com 1 2 3 4ApplicationFittingAttenuation LevelSilencing RequiredAmbient NoiseFlangedPipe ThreadsSlotted Pipe EndCompanion Flanges OfferedDouble-Wrapped BodyType 1 End-in,End-outType 2 Side-In,Side-OutIndustrial12–18 dB 18–25 dB 25–35 dB 35–42 dB 28 dB 34 dB 25 dBminimum moderate maximum maximum moderatemediumto highResidential Critical Hospital LPD-1 LPD-2 Space Saverlow tomediumlowlowmediumto highmoderate tomaximumlow tomediummoderate tomaximum4"–22" 4"–22" 4"–22" 4"–14" 4"–22" 4"–22" 4"–22"• • •• • • • • •• • • • • •low tomedium• • • • • • •• • • ••Type 3 Side-In, End-OutConstructionType 4 Middle Side-In, End-OutUp to 26" O.D.26" to 36" O.D.Greater than 36" O.D.• • • •• • • • •aluminizedsteel*aluminized/mild steel*mild steel*aluminizedsteel*aluminized/mild steel*mild steel*aluminizedsteel*aluminized/mild steel*aluminized/mild steel*aluminizedsteel*aluminized/mild steel*aluminized/mild steel*aluminizedsteel*aluminized/mild steel*mild steel*aluminizedsteel*aluminized/mild steel*mild steel*aluminizedsteel*aluminized/mild steel*aluminized/mild steel**Also available in stainless steel which provides exceptional resistance to corrosion and has a maximum operatingtemperature of of 1,500°F.“A” Mounting Flange:Standard in sizes 4" to 22". Drillingmatches 125/150# ASA standard.“B” Male Pipe Threads:NPT ends offered in sizes 4" and smaller.“S” Slotted Pipe Ends:Slotted ends offered in sizes 2" through 6".

2.3 2.3ProductPerformanceStandard Engine SilencersEngine ExhaustRotary Silencers PositiveBlower SilencersInsertion Loss, dBInsertion Loss, dBTypical Attenuation Curves,Standard and Puck-Style Units403530252015105031.5 63 125 250 500 1K 2K 4K 8KOctave Band Center Frequency, Hz403530252015105031.5 63 125 250 500 1K 2K 4K 8KOctave Band Center Frequency, HzEstimated Pressure Drop(Inches of Water)Estimated Pressure Drop(Inches of Water)2420161284Pressure Drop, Standard Units00 1 2 3 4 5 6 7 8 9 10 11 12 13 14Exhaust Gas Velocity in Thousands (ft./min.)242016128400 1 2 3 4 5 6 7 8 9 10 11 12 13 14Exhaust Gas Velocity in Thousands (ft./min.)Industrial GradeResidential GradeSee page 1.1 for ordering information | www.universalAET.com 1 2 3 4Insertion Loss, dB403530252015105031.5 63 125 250 500 1K 2K 4K 8KOctave Band Center Frequency, HzEstimated Pressure Drop(Inches of Water)242016128400 1 2 3 4 5 6 7 8 9 10 11 12 13 14Exhaust Gas Velocity in Thousands (ft./min.)Critical GradeInsertion Loss, dB403530252015105031.5 63 125 250 500 1K 2K 4K 8KOctave Band Center Frequency, HzEstimated Pressure Drop(Inches of Water)242016128400 1 2 3 4 5 6 7 8 9 10 11 12 13 14Exhaust Gas Velocity in Thousands (ft./min.)Hospital GradeNote: When figuring pressure drop for side or middle side inlet, add 3" H 2 O to back pressure shown on curve.

J/2C/22.4Rotary Engine Positive ExhaustBlower Silencers-PuckPuck-StyleStandard Engine SilencersSee page 1.1 for ordering information | www.universalAET.com 1 2 3 4DLYDPKSingle InletLYNPDYL“Puck”-style silencers are low-profilesilencers that not only fit in the smallestenclosures, but are also perfect for portablepower, marine, or other applications where a“tight fit” is a concern. The single inletmodels are available in residential, criticaland hospital attenuation grades. Critical andhospital models also offer a low skintemperature (LST) design for exceptionallysmall compartments and enclosures to keepradiant heat to a minimum. The LSTconfiguration incorporates an extra layer ofpacked acoustic/thermal insulation thatreduces heat and noise, eliminating the needfor expensive external wraps. The aluminizedsteel designs far outperform the comparablypriced carbon steel competition by offeringhigher corrosion resistance, greatermaximum operating temperatures, lessweight and an overall longer silencer life.NNKKAJ/2C/2J/2C/2CPCPADual Inlet Type 1JDual Inlet Type 2DDNYLNYLAAKKACPPADual Inlet Type 3JJ/2Dual Inlet Type 4J

Rotary PositiveBlower Silencers2.5Engine ExhaustSilencers-Puck2 32.5See page 1.1 for ordering information | www.universalAET.com 1 4PartNumberP A N D K Y L C J WeightCriticalHospital47040F47050F47060F47080F47082F47084F47086F47088F47099F48040F48050F48060F48080F48082F48084F48086F48088F48099F4.05.06.08.010.012.014.016.018.04.05.06.08.010.012.014.016.018.0——————————————————4.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.028.029.033.045.052.062.064.474.484.632.032.038.052.059.070.070.075.086.018.018.520.526.530.035.036.241.246.320.020.023.030.033.539.039.041.547.08.59.09.810.512.013.015.516.517.59.09.59.810.512.013.015.818.019.013.014.015.517.020.022.027.029.031.014.015.015.517.020.022.027.532.034.0————————————————————————————————————1251602153755658009551,3101,6301701952765507561,0051,1441,3641,755Single Inlet, Low Skin Temperature (LST)Single InletPartNumberP A N D K Y L C J WeightResidentialCriticalHospital42040F42050F42060F42080F42082F42084F42086F42088F42099F43040F43050F43060F43080F43082F43084F43086F43088F43099F44040F44050F44060F44080F44082F44084F44086F44088F44099F4.05.06.08.010.012.014.016.018.04.05.06.08.010.012.014.016.018.04.05.06.08.010.012.014.016.018.0———————————————————————————4.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.020.021.024.032.038.045.047.054.062.026.027.031.043.050.060.062.472.482.630.030.036.050.057.068.068.073.084.014.014.516.020.023.026.527.531.035.017.017.519.525.529.034.035.240.245.319.019.022.029.032.538.038.040.546.07.08.08.89.511.012.014.515.516.57.58.08.89.511.012.014.515.516.58.08.58.89.511.012.014.817.018.010.012.013.515.018.020.025.027.029.011.012.013.515.018.020.025.027.029.012.013.013.515.018.020.025.530.032.0——————————————————————————————————————————————————————65801001852804155456608251101401903555157108551,1801,4501461752354926729081,0391,2381,597Puck-StyleStandard Engine Silencers

2.6Rotary Engine Positive ExhaustBlower Silencers-PuckPuck-StyleStandard Engine SilencersSee page 1.1 for ordering information | www.universalAET.com 1 2 3 4CriticalHospitalDual InletPartNumber431CA684F431CA884F431CB886F431CB086F431CB888F431CB088F431CC886F431CC086F431CC888F431CC088F431CC899F431CC099F433MA580F433MA582F432MB682F432MC682F432MD684F432ME682F432MF684F433MG684F433MH686F433MJ686F434KA086F434KA088F441CA684F441CA884F441CB886F441CB086F441CB888F441CB088F441CC886F441CC086F441CC888F441CC088F441CC899F441CC099F443MA580F443MA582F442MB682F442MC682F442MD684F442ME682F442MF684F443MG684F443MH686F443MJ686F444KA086F444KA088FFits EngineCAT 3508BCAT 3508BCAT 3512BCAT 3512BCAT 3512BCAT 3512BCAT 3516CAT 3516CAT 3516CAT 3516CAT 3516CAT 3516Cummins VTA28-G5Cummins VTA28-G5Cummins QST30-G1-2Cummins QST30-G3Cummins QST30-G3-5Cummins KTA38-G3Cummins KTA38-G3-5Cummins KTA50-G3Cummins KTA50-G3-4Cummins KTA50-G9DD/Kohler 12V 4000DD/Kohler 12V 4000CAT 3508BCAT 3508BCAT 3512BCAT 3512BCAT 3512BCAT 3512BCAT 3516CAT 3516CAT 3516CAT 3516CAT 3516CAT 3516Cummins VTA28-GCummins VTA28-G5Cummins QST30-G1-2Cummins QST30-G3Cummins QST30-G3-5Cummins KTA38-G3Cummins KTA38-G3-5Cummins KTA50-G3Cummins KTA50-G3-4Cummins KTA50-G9DD/Kohler 12V 4000DD/Kohler 12V 4000SilencerType111111111111332222233344111111111111332222233344P A N D K Y L C J Weight12.012.014.014.016.016.014.014.016.016.018.018.08.010.010.010.012.010.012.012.014.014.014.016.012.012.014.014.016.016.014.014.016.016.018.018.08.010.010.010.012.010.012.012.014.014.014.016.06.08.08.010.08.010.08.010.08.010.08.010.05.05.06.06.06.06.06.06.06.06.010.010.06.08.08.010.08.010.08.010.08.010.08.010.05.05.06.06.06.06.06.06.06.06.010.010.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.060.060.062.462.472.472.462.462.472.472.482.682.643.050.050.050.060.050.060.060.062.462.462.472.468.068.068.068.073.073.068.068.073.073.084.084.050.057.057.057.068.057.068.068.068.068.068.073.034.034.035.235.240.240.235.235.240.240.245.345.325.529.029.029.034.029.034.034.035.235.235.240.238.038.038.038.040.540.538.038.040.540.546.046.029.032.532.532.538.032.538.038.038.038.038.040.512.012.014.514.515.515.514.514.515.515.516.516.59.511.011.011.012.011.012.012.014.514.514.515.512.012.014.814.817.017.014.814.817.017.018.018.09.511.011.011.012.011.012.012.014.814.814.817.020.020.025.025.027.027.025.025.027.027.029.029.015.018.018.018.020.018.020.020.025.025.025.027.020.020.025.525.530.030.025.525.530.030.032.032.015.018.018.018.020.018.020.020.025.525.525.530.020.520.520.620.620.620.620.520.520.520.520.520.512.512.512.113.313.313.313.310.310.310.3——20.520.520.620.620.620.620.520.520.520.520.520.512.512.512.113.313.313.313.310.310.310.3——————————————2.02.04.24.24.25.75.713.913.913.918.518.5————————————2.02.04.24.24.25.85.713.913.913.918.57067048558631,1741,1828558631,1741,1801,4431,4513575135195197065197067068478478631,1829049021,0391,0471,2321,2401,0471,0471,2321,2381,5901,5984946706766769046769049041,0311,0311,0471,240

2.7 2.7Puck-StyleStandard Engine SilencersEngine ExhaustRotary Silencers-Puck PositiveBlower SilencersCriticalHospitalDual Inlet, Flush MountPartNumber431CA684S431CA884S431CB886S431CB086S431CB888S431CB088S431CC886S431CC086S431CC888S431CC088S431CC899S431CC099S433MA580S433MA582S432MB682S432MC682S432MD684S432ME682S432MF684S433MG684S433MH686S433MJ686S434KA086S434KA088S441CA684S441CA884S441CB886S441CB086S441CB888S441CB088S441CC886S441CC086S441CC888S441CC088S441CC899S441CC099S443MA580S443MA582S442MB682S442MC682S442MD684S442ME682S442MF684S443MG684S443MH686S443MJ686S444KA086S444KA088SFits EngineCAT 3508BCAT 3508BCAT 3512BCAT 3512BCAT 3512BCAT 3512BCAT 3516CAT 3516CAT 3516CAT 3516CAT 3516CAT 3516Cummins VTA28-G5Cummins VTA28-G5Cummins QST30-G1-2Cummins QST30-G3Cummins QST30-G3-5Cummins KTA38-G3Cummins KTA38-G3-5Cummins KTA50-G3Cummins KTA50-G3-4Cummins KTA50-G9DD/Kohler 12V 4000DD/Kohler 12V 4000CAT 3508BCAT 3508BCAT 3512BCAT 3512BCAT 3512BCAT 3512BCAT 3516CAT 3516CAT 3516CAT 3516CAT 3516CAT 3516Cummins VTA28-G5Cummins VTA28-G5Cummins QST30-G1-2Cummins QST30-G3Cummins QST30-G3-5Cummins KTA38-G3Cummins KTA38-G3-5Cummins KTA50-G3Cummins KTA50-G3-4Cummins KTA50-G9DD/Kohler 12V 4000DD/Kohler 12V 4000SilencerType111111111111332222233344111111111111332222233344P A N D K Y L C J Weight12.012.014.014.016.016.014.014.016.016.018.018.08.010.010.010.012.010.012.012.014.014.014.016.012.012.014.014.016.016.014.014.016.016.018.018.08.010.010.010.012.010.012.012.014.014.014.016.06.08.08.010.08.010.08.010.08.010.08.010.05.05.06.06.06.06.06.06.06.06.010.010.06.08.08.010.08.010.08.010.08.010.08.010.05.05.06.06.06.06.06.06.06.06.010.010.00.50.50.50.60.50.60.50.60.50.60.50.60.50.50.50.50.50.50.50.50.50.50.60.60.50.50.50.60.50.60.50.60.50.60.50.60.50.50.50.50.50.50.50.50.50.50.60.660.060.062.462.472.472.462.462.472.472.482.682.643.050.050.050.060.050.060.060.062.462.462.472.468.068.068.068.073.073.068.068.073.073.084.084.050.057.057.057.068.057.068.068.068.068.068.073.034.034.035.235.240.240.235.235.240.240.245.345.325.529.029.029.034.029.034.034.035.235.235.240.234.034.034.034.036.536.534.034.036.536.542.042.025.028.528.528.534.032.538.034.034.034.034.036.58.58.511.011.112.012.111.011.112.012.113.013.16.07.57.57.58.57.58.58.511.011.011.112.18.58.511.311.413.513.611.311.413.513.614.514.66.07.57.57.58.57.58.58.511.311.311.413.616.516.521.521.623.523.621.521.623.523.625.525.611.514.514.514.516.514.516.516.521.521.521.623.616.516.522.022.126.526.622.022.126.526.628.528.611.514.514.514.516.514.516.516.522.022.022.126.620.520.520.620.620.620.620.520.520.520.520.520.512.512.512.113.313.313.313.310.310.310.3——20.520.520.620.620.620.620.520.520.520.520.520.512.512.512.113.313.313.313.310.310.310.3——————————————2.02.04.24.24.25.75.713.913.913.918.518.5————————————2.02.04.24.24.25.75.713.913.913.918.518.57006988478531,1661,1728478531,1661,1701,4351,4413525085135137005137007008418418531,1728988961,0311,0371,2241,2301,0391,0371,2241,2281,5821,5884896656706708986708988981,0251,0251,0371,230See page 1.1 for ordering information | www.universalAET.com 1 2 3 4

2.8Rotary Engine Positive ExhaustBlower Silencers-PuckPuck-StyleStandard Engine SilencersSee page 1.1 for ordering information | www.universalAET.com 1 2 3 4CriticalHospitalDual Inlet, Low Skin Temperature (LST)PartNumber471CA684F471CA884F471CB886F471CB086F471CB888F471CB088F471CC886F471CC086F471CC888F471CC088F471CC899F471CC099F473MA580F473MA582F472MB682F472MC682F472MD684F472ME682F472MF684F473MG684F473MH686F473MJ686F474KA086F474KA088F481CA684F481CA884F481CB886F481CB086F481CB888F481CB088F481CC886F481CC086F481CC888F481CC088F481CC899F481CC099F483MA580F483MA582F482MB682F482MC682F482MD684F482ME682F482MF684F483MG684F483MH686F483MJ686F484KA086F484KA088FFits EngineCAT 3508BCAT 3508BCAT 3512BCAT 3512BCAT 3512BCAT 3512BCAT 3516CAT 3516CAT 3516CAT 3516CAT 3516CAT 3516Cummins VTA28-G5Cummins VTA28-G5Cummins QST30-G1-2Cummins QST30-G3Cummins QST30-G3-5Cummins KTA38-G3Cummins KTA38-G3-5Cummins KTA50-G3Cummins KTA50-G3-4Cummins KTA50-G9DD/Kohler 12V 4000DD/Kohler 12V 4000CAT 3508BCAT 3508BCAT 3512BCAT 3512BCAT 3512BCAT 3512BCAT 3516CAT 3516CAT 3516CAT 3516CAT 3516CAT s3516Cummins VTA28-G5Cummins VTA28-G5Cummins QST30-G1-2Cummins QST30-G3Cummins QST30-G3-5Cummins KTA38-G3Cummins KTA38-G3-5Cummins KTA50-G3Cummins KTA50-G3-4Cummins KTA50-G9DD/Kohler 12V 4000DD/Kohler 12V 4000SilencerType111111111111332222233344111111111111332222233344P A N D K Y L C J Weight1212141416161414161618188101010121012121414141612121414161614141616181881010101210121214141416688108108108108105566666666101068810810810810810556666666610104.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.062.062.064.464.474.474.464.464.474.474.484.684.645.052.052.052.062.052.060.062.064.464.464.474.470.070.070.070.075.075.070.070.075.075.086.086.052.059.059.059.070.059.070.070.070.070.070.075.035.035.036.236.241.241.236.236.241.241.246.346.326.530.030.030.035.030.035.035.036.236.236.241.239.039.039.039.041.541.539.039.041.541.547.047.030.033.533.533.539.033.539.039.039.039.039.041.513.013.015.015.516.516.515.515.516.516.517.517.510.512.012.012.013.012.013.013.015.515.515.516.513.013.015.815.818.018.015.815.818.018.019.019.010.512.012.012.013.012.013.013.015.815.815.818.022.022.027.027.029.029.027.027.029.029.031.031.017.020.020.020.022.020.022.022.027.027.027.029.022.022.027.527.532.032.027.527.532.032.034.034.017.020.020.020.022.020.022.022.027.527.527.532.020.520.520.620.620.620.620.520.520.520.520.520.512.512.512.113.313.313.313.310.310.310.3——20.520.520.620.620.620.620.520.520.520.520.520.512.512.512.113.313.313.313.310.310.310.3——————————————2.02.04.24.24.25.75.713.913.913.918.518.5————————————2.02.04.24.24.25.75.713.913.913.918.518.57967909559631,3041,3129559631,3041,3101,6231,6313775635695697965697967969479479631,3121,0001,0001,1441,1521,3581,3661,1521,1521,3581,3641,7481,7565527547607601,0007601,0001,0001,1361,1361,1521,366

2.9 2.9Puck-StyleStandard Engine SilencersEngine ExhaustRotary Silencers-Puck PositiveBlower SilencersCriticalHospitalDual Inlet, Low Skin Temperature (LST), Flush MountPartNumber471CA684S471CA884S471CB886S471CB086S471CB888S471CB088S471CC886S471CC086S471CC888S471CC088S471CC899S471CC099S473MA580S473MA582S472MB682S472MC682S472MD684S472ME682S472MF684S473MG684S473MH686S473MJ686S474KA086S474KA088S481CA684S481CA884S481CB886S481CB086S481CB888S481CB088S481CC886S481CC086S481CC888S481CC088S481CC899S481CC099S483MA580S483MA582S482MB682S482MC682S482MD684S482ME682S482MF684S483MG684S483MH686S483MJ686S484KA086S484KA088SFits EngineCAT 3508BCAT 3508BCAT 3512BCAT 3512BCAT 3512BCAT 3512BCAT 3516CAT 3516CAT 3516CAT 3516CAT 3516CAT 3516Cummins VTA28-G5Cummins VTA28-G5Cummins QST30-G1-2Cummins QST30-G3Cummins QST30-G3-5Cummins KTA38-G3Cummins KTA38-G3-5Cummins KTA50-G3Cummins KTA50-G3-4Cummins KTA50-G9DD/Kohler 12V 4000DD/Kohler 12V 4000CAT 3508BCAT 3508BCAT 3512BCAT 3512BCAT 3512BCAT 3512BCAT 3516CAT 3516CAT 3516CAT 3516CAT 3516CAT 3516Cummins VTA28-G5Cummins VTA28-G5Cummins QST30-G1-2Cummins QST30-G3Cummins QST30-G3-5Cummins KTA38-G3Cummins KTA38-G3-5Cummins KTA50-G3Cummins KTA50-G3-4Cummins KTA50-G9DD/Kohler 12V 4000DD/Kohler 12V 4000SilencerType111111111111332223333344111111111111332222233344P A N D K Y L C J Weight12.012.014.014.016.016.014.014.016.016.018.018.08.010.010.010.012.010.012.012.014.014.014.016.012.012.014.014.016.016.014.014.016.016.018.018.08.010.010.010.012.010.012.012.014.014.014.016.06.08.08.010.08.010.08.010.08.010.08.010.05.05.06.06.06.06.06.06.06.06.010.010.06.08.08.010.08.010.08.010.08.010.08.010.05.05.06.06.06.06.06.06.06.06.010.010.00.50.50.50.60.50.60.50.60.50.60.50.60.50.50.50.50.50.50.50.50.50.50.60.60.50.50.50.60.50.60.50.60.50.60.50.60.50.50.50.50.50.50.50.50.50.50.60.662.062.064.464.474.474.464.464.474.474.484.684.645.052.052.052.062.052.062.062.064.464.464.474.470.070.070.070.075.075.070.070.075.075.086.086.052.059.059.059.070.059.070.070.070.070.070.075.035.035.036.236.241.241.236.236.241.241.246.346.326.530.030.030.035.030.035.035.036.236.236.241.239.039.039.039.041.541.539.039.041.541.547.047.030.033.533.533.539.033.539.039.039.039.039.041.59.59.512.012.013.013.012.012.013.013.014.014.07.08.58.58.59.58.59.59.512.012.012.013.09.59.512.312.315.515.512.312.315.515.516.516.57.08.58.58.59.58.59.59.512.312.312.315.518.518.523.223.525.525.523.523.525.525.527.527.513.516.516.516.518.516.518.518.523.523.523.525.518.518.524.024.028.528.524.024.028.528.530.530.513.516.516.516.518.516.518.518.524.024.024.028.520.520.520.620.620.620.620.520.520.520.520.520.512.512.512.113.313.313.313.310.310.310.3——20.520.520.620.620.620.620.520.520.520.520.520.512.512.512.113.313.313.313.310.310.310.3——————————————2.02.04.24.24.25.75.713.913.913.918.518.5————————————2.02.04.24.24.25.75.713.913.913.918.518.58068069479531,2961,3029479531,2961,3001,6151,6213725585635637905637907909419419531,3109949921,1361,1421,3501,3561,1441,1421,3501,3541,7401,7465477497547549947549949941,1301,1301,1421,356See page 1.1 for ordering information | www.universalAET.com 1 2 3 4

2.10Rotary Engine Positive ExhaustBlower Silencers Silencers4See page 1.1 for ordering information | www.universalAET.com 1 2 3Type 1Standard Engine SilencersEnd-In, End-Out DesignIndustrial Grade12–18 dB attenuationResidential Grade18–25 dB attenuationCritical Grade25–35 dB attenuationHospital Grade35–42 dB attenuationHospitalCriticalResidentialIndustrialPartNumber41120P41125P41130P41135P41140*41150F41160F41180F41182F41184F41186F41188F41199F41121F41122F41220P41225P41230P41235P41240*41250F41260F41280F41282F41284F41286F41288F41299F41221F41222F41307P41310P41313P41315P41320P41325P41330P41335P41340*41350F41360F41380F41382F41384F41386F41388F41399F41321F41322F41440F41450F41460F41480F41482F41484F41486FANominalInletDiameter2.02.53.03.54.05.06.08.010.012.014.016.018.020.022.02.02.53.03.54.05.06.08.010.012.014.016.018.020.022.00.751.001.251.502.002.503.003.504.005.006.008.0010.0012.0014.0016.0018.0020.0022.004.05.06.08.010.012.014.0BOutsideBodyDiameter7.68.18.59.010.112.114.118.122.122.236.242.242.248.354.38.19.010.110.110.114.114.122.222.226.236.242.242.348.354.34.25.06.18.19.010.111.112.112.114.116.122.126.230.242.242.248.254.360.314.116.118.126.130.236.242.2CBodyLength22.827.231.132.832.232.332.948.850.665.670.684.296.298.499.631.738.838.244.249.243.557.556.684.779.794.6108.2108.2134.1135.521.323.427.530.740.847.249.551.358.363.572.078.779.7104.8108.2156.2133.9159.6161.366.572.482.791.7104.8130.6132.2DOverallLength26.632.636.637.638.037.938.458.058.073.076.090.8103.0104.0107.335.642.844.050.055.051.465.464.092.087.0101.0115.0114.9140.1143.223.827.031.234.644.052.055.657.064.071.480.886.087.0112.0115.0163.0139.9165.5166.872.080.090.098.9112.0137.0138.9EOffsetto C/L————2.302.803.40————————1.251.502.752.062.313.613.60—————————0.75——————1.802.602.00————————4.004.705.00————*Specify “F” for flanged, “P” for pipe threads.Drains are standard on all silencers with a 9" body diameter or larger.Specifications are subject to change without notice; all dimensions are in inches.FOffsetto C/L————2.302.803.40————————1.251.502.752.062.313.613.60—————————0.72——————1.802.602.00————————4.004.705.00————GInletLength1.82.72.72.42.92.82.84.63.73.72.73.33.42.83.91.92.02.92.92.94.04.03.73.73.73.23.43.33.03.91.31.81.81.91.62.43.12.32.94.04.43.73.73.63.43.43.13.32.82.83.83.73.63.43.23.4

2.11 2.11HospitalCriticalResidentialIndustrialPartNumber43120P43125P43130P43135P43140*43150F43160F43180F43182F43184F43186F43188F43199F43121F43122F43220P43225P43230P43235P43240*43250F43260F43280F43282F43284F43286F43288F43299F43221F43222F43320P43325P43330P43335P43340*43350F43360F43380F43382F43384F43386F43388F43399F43321F43322F43440F43450F43460F43480F43482F43484F43486FANominalInletDiameter2.02.53.03.54.05.06.08.010.012.014.016.018.020.022.02.02.53.03.54.05.06.08.010.012.014.016.018.020.022.02.02.53.03.54.05.06.08.010.012.014.016.018.020.022.04.05.06.08.010.012.014.0BOutsideBodyDiameter7.68.18.59.09.012.114.118.122.222.236.242.242.348.354.38.19.010.110.110.114.114.122.222.226.236.242.142.248.354.39.010.111.112.112.114.116.122.126.230.242.242.248.254.360.314.116.118.126.230.236.242.2CBodyLength22.427.730.632.832.830.430.648.450.665.670.684.296.297.999.631.738.838.244.249.243.557.656.684.779.894.7108.2108.2134.1135.640.846.650.051.458.463.572.078.779.9104.8108.2156.2134.0159.7161.366.672.482.691.8104.8130.6132.2DOverallLength24.530.233.635.435.434.234.553.254.369.373.887.599.6101.2103.532.840.841.147.151.045.761.560.388.383.497.9111.6111.5137.1139.442.449.352.854.261.267.476.482.383.4108.4111.6159.6137.0162.9164.169.377.086.395.5108.4133.8135.6EOffsetto C/L3.23.93.84.95.45.76.89.212.314.315.318.119.020.021.83.44.44.14.65.15.86.811.311.312.915.316.119.119.821.83.93.84.55.25.75.86.511.312.914.416.116.119.922.122.65.86.06.810.912.414.316.1FOffsetto C/L————————————————1.51.82.1—2.63.1————————————1.82.63.1————————4.04.75.0————GInletLength2.02.53.03.03.04.04.04.04.04.04.04.04.04.04.02.02.53.03.03.04.04.04.04.04.04.04.04.04.04.02.02.53.04.04.04.04.04.04.04.04.04.04.04.04.03.04.04.04.04.04.04.0HOutletLength2.12.42.32.62.63.83.94.83.73.73.23.33.33.33.91.92.02.92.92.93.93.93.73.63.63.23.43.33.03.81.62.72.82.82.83.94.43.63.53.63.43.43.03.22.82.73.83.73.73.63.23.4Type 3Standard Engine SilencersGSide-In, End-Out DesignIndustrial Grade12–18 dB attenuationResidential Grade18–25 dB attenuationCritical Grade25–35 dB attenuationHospital Grade35–42 dB attenuationFHEngine ExhaustRotary Silencers PositiveBlower Silencers4See page 1.1 for ordering information | www.universalAET.com 1 2 3*Specify “F” for flanged, “P” for pipe threads.Drains are standard on all silencers with a 9" body diameter or larger.Specifications are subject to change without notice; all dimensions are in inches.

2.12Rotary Engine Positive ExhaustBlower Silencers SilencersType 4Standard Engine SilencersSee page 1.1 for ordering information | www.universalAET.com 1 2 3 4HospitalCriticalResidentialIndustrialPartNumber44540F44550F44560F44580F44582F44584F44586F44640F44650F44660F44680F44682F44684F44686F44740F44750F44760F44780F44782F44784F44786F44840F44850F44860F44880F44882F44884F44886FANominalInlet Diameter4.05.06.08.010.012.014.04.05.06.08.010.012.014.04.05.06.08.010.012.014.04.05.06.08.010.012.014.0BOutsideBody Diameter9.012.114.118.122.226.236.210.114.114.122.122.126.136.212.114.116.122.126.230.242.214.116.118.126.230.236.242.2CBodyLength32.830.330.648.650.649.870.649.243.657.654.684.679.588.758.463.672.078.779.9104.8108.266.572.482.691.9104.8130.6132.2Drains are standard on all silencers with a 9" body diameter or larger.Specifications are subject to change without notice; all dimensions are in inches.DOverallLength35.434.234.553.354.353.473.852.147.561.558.388.283.491.961.267.576.482.383.4108.4111.569.276.286.395.5108.2133.9135.6EOffsetto C/L16.415.215.324.525.324.935.324.621.828.826.342.339.944.329.231.836.039.339.952.454.133.336.241.346.052.465.366.1—Middle Side-In, End-Out DesignIndustrial Grade12–18 dB attenuationResidential Grade18–25 dB attenuationCritical Grade25–35 dB attenuationHospital Grade35–42 dB attenuationFOffsetto C/L—————6.5——2.63.1————1.82.63.1————4.04.75.0———GInletLength3.04.04.04.04.04.04.03.04.04.04.04.04.04.03.04.04.04.04.04.04.03.04.04.04.04.04.04.0HOutletLength2.63.83.94.73.73.63.22.93.93.93.73.63.63.22.83.94.43.63.53.63.32.73.83.73.63.43.33.4

Exhaust SilencersLow Pressureand Space SaverSilencer PerformanceStandard Engine Silencers2.13 2.13Engine ExhaustRotary Silencers PositiveBlower SilencersLow Pressure Drop 1Low Pressure Drop 2Typical Attenuation, dBTypical Attenuation, dB322824201612840322824201612840Typical Attenuation Graph31.5 63 125 250 500 1K 2K 4K 8K 16K 32KOctave Band Center Frequency, Hz31.5 63 125 250 500 1K 2K 4K 8K 16K 32KOctave Band Center Frequency, HzEstimated Pressure Drop(Inches of Water)Estimated Pressure Drop(Inches of Water)2420161284Pressure Drop00 1 2 3 4 5 6 7 8 9 10 11 12 13 14Exhaust Gas Velocity in Thousands (ft/min)242016128400 1 2 3 4 5 6 7 8 9 10 11 12 13 14Exhaust Gas Velocity in Thousands (ft./min.)See page 1.1 for ordering information | www.universalAET.com 1 2 3 4Standard Space SaverInsertion Loss, dB403530252015105031.5 63 125 250 500 1K 2K 4K 8KOctave Band Center Frequency, HzEstimated Pressure Drop(Inches of Water)242016128400 1 2 3 4 5 6 7 8 9 10 11 12 13 14Exhaust Gas Velocity in Thousands (ft./min.)Critical Grade Space SaverInsertion Loss, dB403530252015105031.5 63 125 250 500 1K 2K 4K 8KOctave Band Center Frequency, HzEstimated Pressure Drop(Inches of Water)242016128400 1 2 3 4 5 6 7 8 9 10 11 12 13 14Exhaust Gas Velocity in Thousands (ft./min.)Note: When figuring pressure drop for side or middle side inlet, add 4" H 2 O to back pressure shown on curve.

2See page 1.1 for ordering information | www.universalAET.com 1 3Rotary PositiveBlower Silencers2.14Engine ExhaustSilencers2.144Low Pressure DropStandard Engine Silencers47200F47201F47202F47203F47204F47205F47206F47207F47208F47209F47210F47300F47301F47302F47303F47304F47305F47306F47307F47308F47309F47310F4.05.06.08.010.012.014.016.018.020.022.04.05.06.08.010.012.014.016.018.020.022.014.116.118.126.230.236.236.242.248.348.354.316.118.122.226.230.136.242.242.248.354.360.348.048.055.060.085.080.095.0108.0108.0133.8135.551.050.759.967.780.0100.0120.0132.2133.9159.7169.3PartNumberANominalInlet DiameterBOutsideBody DiameterCBodyLength53.556.064.366.390.287.4102.4114.8115.1143.0145.059.056.365.374.085.2107.4125.8139.0141.0167.2176.3DOverallLengthLPD-1LPD-247211F47212F47213F47214F47215F47216F47217F47218F47219F47220F47221F47311F47312F47313F47314F47315F47316F47317F47318F47319F47320F47321F4.05.06.08.010.012.014.016.018.020.022.04.05.06.08.010.012.014.016.018.020.022.014.116.118.126.230.236.236.242.248.348.354.316.118.122.226.230.236.242.242.248.354.360.348.148.054.960.185.080.095.0108.0107.9133.8135.651.049.959.967.880.0100.0119.8132.2134.0159.7169.350.852.059.663.287.683.798.7111.4111.5138.4140.355.053.162.670.982.6103.7122.8135.6137.4163.4172.85.85.56.811.012.413.315.321.120.920.921.85.55.38.89.412.413.316.016.120.921.822.64.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.02.74.04.73.12.63.73.73.43.64.64.74.03.22.73.12.63.73.03.43.63.73.5PartNumberANominalInletDiameterBOutsideBodyDiameterCBodyLengthDOverallLengthEOffsetto C/LFInletLengthGOutletLengthLPD-1LPD-2Specifications subject to change without notice; all dimensions are in inches.FGEnd-In, End-Out DesignSide-In, End-Out Design

2.15 2.15Space Saver units are designed for side-inend-out mounting, although either end maybe used as an inlet. Using end-in side-outmay result in lower attenuation reductions.Condensate drains standard on all units.Critical GradeSpace SaverStandard Engine SilencersEngine ExhaustRotary Silencers PositiveBlower SilencersSlotted ConnectionsStandard Space SaverPartNumber47820S47825S47830S47835S47840S47850S47860S*A1InletDiameter2.0 ID2.5 ID3.0 ID3.5 ID4.0 ID5.0 ID6.0 IDA2OutletDiameter2.0 OD2.5 OD3.0 OD3.5 OD4.0 ID5.0 ID6.0 IDBOutside BodyDiameter7.008.5012.1112.1112.1116.1116.11CBodyLength8.08.59.312.016.016.522.0DOverallLength12.7013.3314.6519.4223.3223.8929.49EInlet Offsetto C/L1.101.60—2.702.403.702.50FOutlet Offsetto C/L——————1.5GInletLength4.04.04.04.04.04.04.0HLengthto Flange12.012.513.118.021.922.428.0IFlangeto Flange4.04.03.96.05.95.96.0JOffset Seamto Inlet C/L4.04.34.66.08.08.211.0See page 1.1 for ordering information | www.universalAET.com 1 2 3 4*Refer to configuration B.Critical Grade Space SaverPartNumberA1InletDiameterA2OutletDiameterBOutside BodyDiameterCBodyLengthDOverallLengthEInlet Offsetto C/LFOutlet Offsetto C/LGInletLengthHLengthto FlangeIFlangeto FlangeJOffset Seamto Inlet C/L48820S48825S48830S48835S48840S*48850S*48860S*2.0 ID2.5 ID3.0 ID3.5 ID4.0 ID5.0 ID6.0 ID2.0 OD2.5 OD3.0 OD3.5 OD4.0 ID5.0 ID6.0 ID12.1112.1116.1116.1118.1120.1122.159.313.014.016.520.022.025.014.6520.4121.3823.8927.4929.4936.28—2.73.73.72.52.54.5————1.53.04.04.04.04.04.04.04.04.013.119.019.922.426.028.033.03.96.05.95.96.06.08.04.66.57.08.210.011.012.5*Refer to configuration B.

2.16Rotary Engine Positive ExhaustBlower Silencers SilencersSpark ArrestorsNon-Silencing UnitsSee page 1.1 for ordering information | www.universalAET.com 1 2 3 4Standard EngineExhaust Spark ArrestorsStandard spark arrestors are designed foruniversal application with a minimum ofrestriction on the engine, and are ideal asadd-on units to existing exhaust systems.The arrestors’ light weight and small sizereduce stress and vibration to the rest ofthe exhaust system. Typical applicationsinclude logging and constructionequipment, agricultural machinery, over-theroadtrucks, airport equipment, forestry, andmilitary vehicles.How Can You Select the RightSpark Arrestor?If the diameter of the spark arrestor inlet isas large as the exhaust pipe, restrictiongenerally will be within engine guidelines.However, to be sure, check the exhaust CFMof the engine against the CFM rating of thespark arrestor. Some applications (e.g. turbochargedand two-cycle diesel engines) mayrequire larger arrestors and an adapter tocomplete the installation.DrainAttenuation Level:5–9 dBPartNumberAInletDiameterBOutsideOutlet DiameterCBodyDiameterDBodyLengthEOverallLengthFInletLengthCFMRating49110U49115U49120B49125A49130A49135A49140A49150A49160A1.051.502.002.503.003.504.005.006.001.251.502.002.633.133.634.135.136.134.244.245.625.626.627.628.509.6212.12All spark arrestors are qualified and tested for vertical and horizontal installations under the U.S. Forestry Service Standard 5100-1b. All inlets are slotted tube connections. Outlets areO.D. tubing. CFM rating is with a pressure drop of 1 PSI. All dimensions in inches.3.23.16.48.610.212.014.616.022.05.95.911.012.814.917.621.224.027.01.31.42.02.02.03.03.44.02.0801652954506609001,1801,8402,650

2.17 2.17All Spark Arresting Exhaust Silencers can beinstalled horizontally or vertically. Efficiencyin either position can exceed 95% of ratedflow. Spark Arresting Exhaust Silencersreceive a coat of high heat-resistant siliconealuminum paint and/or a coat of high heatrust-inhibiting primer.See the standard silencer specification sheetfor finish details. Companion flanges areavailable in both cast iron threaded and mildsteel weld-on versions. They are packagedin kits containing nuts, bolts, and gasketsfor complete installation.ProductSpecificationsSpark Arresting Engine SilencersEngine ExhaustRotary Silencers PositiveBlower SilencersApplicationFittingConstructionAttenuation LevelSilencing RequiredOrientationFlangedPipe ThreadsCompanion Flanges OfferedType 1Type 2Type 3Industrial12–18 dB 18–25 dB 25–35 dBminimum moderate maximumhorizontal orvertical•aluminized steel ormild steel*aluminized steel ormild steel*aluminized steel ormild steel*Residentialhorizontal orvertical• •aluminized steel ormild steel*aluminized steel ormild steel*aluminized steel ormild steel*Criticalhorizontal orvertical• • •• • •aluminized steel ormild steel*aluminized steel ormild steel*aluminized steel ormild steel*See page 1.1 for ordering information | www.universalAET.com 1 2 3 4Type 4aluminized steel ormild steel*aluminized steel ormild steel*aluminized steel ormild steel**Also available in stainless steel which provides exceptional resistance to corrosion and has a maximum operatingtemperature of of 1,500°F.“A” Mounting Flange:Standard in sizes 4" to 22". Drillingmatches 125/150# ASA standard.Companion flanges available for 4" to 22".“B” Male Pipe Threads:NPT ends offered in sizes .75" through3.5" (spark arresting silencer only).

2.18Rotary Engine Positive ExhaustBlower Silencers SilencersSilencerPerformanceStandard Engine SilencersSee page 1.1 for ordering information | www.universalAET.com 1 2 3 4Insertion Loss, dBInsertion Loss, dBTypical Attenuation Curve403530Critical2520Residential15105031.5 63 125 250 500 1K 2K 4K 8KOctave Band Center Frequency, Hz403530Critical252015105031.5 63 125 250 500 1K 2K 4K 8KOctave Band Center Frequency, HzEstimated Pressure Drop(Inches of Water)Estimated Pressure Drop(Inches of Water)2420161284Pressure Drop00 1 2 3 4 5 6 7 8 9 10Exhaust Gas Velocity in Thousands (ft./min.)242016128400 1 2 3 4 5 6 7 8 9 10Exhaust Gas Velocity in Thousands (ft./min.)IndustrialResidentialInsertion Loss, dB4035302520Residential15105031.5 63 125 250 500 1K 2K 4K 8KOctave Band Center Frequency, HzEstimated Pressure Drop(Inches of Water)242016128400 1 2 3 4 5 6 7 8 9 10Exhaust Gas Velocity in Thousands (ft./min.)CriticalNote: When determining back pressure, velocityshould not exceed 10,000 ft/min regardless ofallowable back pressure. Specifications are subject tochange without notice.Note: When figuring pressure drop for side or middleside inlet, add 4" H 2 O to back pressure shown on curve.

2.19 2.19Standard Spark Arresting Exhaust Silencersprovide high efficiency spark arresting andexceptional sound attenuation where firehazards must be eliminated and noise mustbe minimized. Three attenuation grades(industrial, residential, and critical) areavailable with spark arresting efficienciesexceeding 95%. Heavy gauge material andfully welded construction provide maximumstrength and longer service life in theseunits. Applications include stationary andportable gen sets, oil field equipment,propulsion engines on ships, and gascompression equipment.Type 1Spark Arresting Engine SilencersEngine ExhaustRotary Silencers PositiveBlower SilencersIndustrialResidentialCriticalPartNumber49325U49330U49335U49340U49350U49360U49380U49382U49384U49386U49388U49399U49321U49322U49415U49420U49425U49430U49435U49440U49450U49460U49480U49482U49484U49486U49540U49550U49560U49580U49582U49584UANominalInlet Diameter2.53.03.54.05.06.08.010.012.014.016.018.020.022.01.52.02.53.03.54.05.06.08.010.012.014.04.05.06.08.010.012.0BOutsideBody Diameter9.009.009.0010.1212.1214.1218.1222.1226.1236.2136.1842.1248.1254.127.008.129.6310.1211.1212.1214.1216.1218.1222.1226.1236.2114.1216.1218.1222.1226.1230.18End-In, End-Out DesignCBodyLength21.824.323.823.728.331.548.352.667.772.280.692.2103.9115.516.420.725.031.233.035.341.545.562.374.686.790.241.547.052.766.672.186.8Male pipe thread connections through 3.5", 4", and larger are 125/150# ASA drilled flanges. Drains are standard onall silencers with a 9" body diameter or larger. Side-in end-out configuration is designed for side inlet flow only.Unit cannot be run backward. All dimensions are in inches.DOverallLength25.029.529.131.535.538.056.060.074.077.090.0100.0109.9123.120.025.030.036.038.042.048.055.072.082.093.095.048.054.062.076.086.192.0EInletLength1.92.72.63.93.62.73.83.23.12.44.73.93.03.81.62.12.22.22.93.13.34.54.93.73.12.03.23.85.13.03.42.9FOutletLength1.92.72.63.93.62.73.83.23.12.44.73.93.03.81.62.12.22.22.93.13.34.54.93.73.12.03.23.85.13.03.42.9See page 1.1 for ordering information | www.universalAET.com 1 2 3 4

2.20Rotary Engine Positive ExhaustBlower Silencers SilencersType 3Spark Arresting Engine SilencersStandard Spark Arresting Exhaust Silencersprovide high efficiency spark arresting andexceptional sound attenuation where firehazards must be eliminated and noise mustbe minimized. Three attenuation grades(industrial, residential, and critical) areavailable with spark arresting efficienciesexceeding 95%. Heavy gauge material andfully welded construction provide maximumstrength and longer service life in theseunits. Applications include stationary andportable gen sets, oil field equipment,propulsion engines on ships, and gascompression equipment.See page 1.1 for ordering information | www.universalAET.com 1 2 3 4Side-In, End-Out DesignPartANominalInlet DiameterBOutsideBody DiameterCBodyLengthDOverallLengthEInletLengthFOutletLengthGOffsetto C/LIndustrialResidentialCritical49640U49650U49660U49680U49682U49684U49686U49740U49750U49760U49780U49782U49784U49786U49840U49850U49860U49880U49882U49884U49886U4.05.06.08.010.012.014.04.05.06.08.010.012.014.04.05.06.08.010.012.014.010.1212.1214.1218.1222.1226.1236.2112.1214.1216.1218.1222.1226.1236.2114.1216.1218.1222.1226.1230.1242.2323.728.831.548.356.667.773.635.341.546.062.374.685.794.641.547.052.366.679.786.8108.227.832.234.852.358.370.975.338.744.850.567.378.388.997.844.850.557.369.385.989.2111.6Male pipe thread connections through 3.5", 4", and larger are 125/150# ASA drilled flanges. Drains are standard onall silencers with a 9" body diameter or larger. Side-in end-out configuration is designed for side inlet flow only.Unit cannot be run backward. All dimensions are in inches.3.03.04.04.04.04.04.03.04.04.04.04.04.04.04.04.04.04.04.04.04.03.73.33.23.81.73.11.73.33.24.54.83.13.13.23.23.54.82.76.12.63.44.85.76.87.710.811.915.35.26.36.08.210.311.915.35.36.06.210.310.912.415.1

2.21 2.21SilencerInsulationBlanketsStandard Engine SilencersEngine ExhaustRotary Silencers PositiveBlower SilencersBenefitsInsulation blankets on your diesel exhaustsystems offer the following benefits:reduces external system surfacetemperature by as much as 1,000°Fsilences sound by as much as 3 dBsubstantially reduces heat transfer intobuildings and enclosuresmulti-use; remove and reuse on otherdiesel exhaust systemsAbout the BlanketsUniversal brand insulated blankets areconstructed of three unique plies:Inside Ply is made of a knitted stainlesssteel wire meshMiddle Ply is a Type E fiberglass insulation*Outer Ply is made from siliconeimpregnatedfiberglass fabricHigh-temperature resistant silicone providessignificantly longer life and improvedresistance to abrasion, flexing wear, tearsand punctures. The heavy-duty inner-liningfabric is resistant to oils and acids/alkalis,as well as being flame retardant.All blanket edges are machine-stitchedusing high grade fiberglass thread andfastened with permanently-mountedstainless steel hooks. The blankets are lacedin place “boot-style” with stainless steel tiewire, resulting in a custom-made “glove fit.”SilencerInsulationBlanket3402 Woven Fiberglass FabricType E Fiberglass Mat.008 Stainless Steel MeshSpecificationsEach insulation blanket conforms with therequirements of Military SpecificationsMIL-I-164-E, Type II.Mounting FlangeInsulation BlanketSee page 1.1 for ordering information | www.universalAET.com 1 2 3 4*Type E fiberglass insulation is designed for insulationwithin high-temperature equipment. It is manufacturedfrom chopped fiberglass fibers and is free of resinousbinders, which enables its use in the high-temperatureranges. Type E insulation is flexible, lightweight andwill not compact under vibration.

Rotary PositiveBlower Silencers2.22Engine ExhaustSilencers322.22See page 1.1 for ordering information | www.universalAET.com 1 4SilencerInsulationBlanketsStandard Engine SilencersSilencerPartNumberBlanketPartNumberSilencerPartNumberBlanketPartNumberSilencerPartNumberBlanketPartNumberSilencerPartNumberBlanketPartNumberSilencerPartNumberBlanketPartNumberSilencerPartNumberBlanketPartNumber41120P41125P41130P41135P41140P41140F41150F41160F41180F41182F41184F41186F41188F41199F41121F41122F41220P41225P41230P41235P41240P41240F41250F41260F41280F71282F71284F41286F41288F41299F41221F41222F41307P41310P41313P41315P41320P41325P41330P41335P41340P41340F41350F41360F41380F41382F41384F41386F901120P901125P901130P901135P901140P901140F901150F901160F901180F901182F901184F901186F901188F901199F901121F901122F901220P901225P901230P901235P901240P901240F901250F901260F901280F901282F901284F901286F901288F901299F901221F901222F901307P901310P901313P901315P901320P901325P901330P901335P901340P901340F901350F901360F901380F901382F901384F901386F41388F41399F41321F41322F41440F41450F41460F41480F41482F41484F41486F43120P43125P43130P43135P43140P43140F43150F43160F43180F43182F43184F43186F43188F43199F43121F43122F43220P43225P43230P43235P43240P43240F43250F43260F43280F43282F43284F43286F43288F43299F43221F43222F43320P43325P43330P43335P43340P901388F901399F901321F901322F901440F901450F901460F901480F901482F901484F901486F903120P903125P903130P903135P903140F903140F903150F903160F903180F903182F903184F903186F903188F903199F903121F903122F903220P903225P903230P903235P903240P903240F903250F903260F903280F903282F903284F903286F903288F903299F903221F903222F903320P903325P903330P903335P903340P43340F43350F43360F43380F43382F43384F43386F43388F43399F43321F43322F43440F43450F43460F43480F43482F43484F43486F44540F44550F44560F44580F44582F44584F44586F44640F44650F44660F44680F44682F44684F44686F44740F44750F44760F44780F44782F44784F44786F44840F44850F44860F44880F44882F44884F44886F47200F47201F903340F903350F903360F903380F903382F903384F903386F903388F903399F903321F903322F903440F903450F903460F903480F903482F903484F903486F904540F904550F904560F904580F904582F904584F904586F904640F904650F904660F904680F904682F904684F904686F904740F904750F904760F904780F904782F904784F904786F904840F904850F904860F904800F904882F904884F904886F907200F907201F47202F47203F47204F47205F47206F47207F47208F47209F47210F47211F47212F47213F47214F47215F47216F47217F47218F47219F47220F47221F47300F47301F47302F47303F47304F47305F47306F47307F47308F47309F47310F47311F47312F47312F47313F47315F47316F47317F47318F47319F47320F47321F47820S47825S47830S47835S47840S47850S907202F907203F907204F907205F907206F907207F907208F907209F907210F907211F907212F907213F907214F907215F907216F907217F907218F907219F907220F907221F907300F907301F907302F907303F907304F907305F907306F907307F907308F907309F907310F907311F907312F907313F907314F907315F907316F907317F907318F907319F907320F907321F907820S978525S907830S907835S907840S907840F47860S47840F47850F47860F47880F47882F47884F47886F49325U49330U49335U49340U49350U49360U49380U49382U49384U49386U49388U49399U49321U49322U49415U49420U49425U49430U49435U49440U49450U49460U49480U49482U49484U49486U49540U49550U49560U49580U49582U49584U49640U49650U49660U49680U49682U49684U49686U49740U907860F907840F907850F907860F907880F907882F907884F907886F909325U909330U909335U909340U909350U909360U909380U909382U909384U909386U909388U909399U909321U909322U909415U909420U909425U909430U909435U909440U909450U909460U909480U909482U909484U909486U909540U909550U909560U909280U909582U909584U909640U909650U909660U909680U909682U909684U909686U909740U49750U49760U49780U49782U49784U49786U49840U49850U49860U49880U49882U49884U49886U909750U909760U909780U909782U909784U909786U909840U909850U909860U909880U909882U909884U909886U

2.23 2.23SilencerAccessoriesConnectorsEngine ExhaustRotary Silencers PositiveBlower SilencersReducing Flex ConnectorPart NumberSize5 8 186 8 188 10 18ANSI Flanged ConnectionsPart NumberSize3 183.5 184 185 186 188 1810 1812 1814 1816 18All assemblies are heli-arc welded to ensurethat the base material is not undercut.Expanded and slotted cuffs may besubstituted for male pipe threads atno charge.Cat ® or Cummins flanges may besubstituted for ANSI flange at no charge.Wye Assembly can be modified with largeoutlet flanges upon request.We verify engine outlet flange dimensions andoutlet centerline spreads on each order due tocontinuous changes by engine manufacturers.Note: 14"–16" no deduct below 18"; furnished with150 lb standard flanges and stainless steel bellowsSee page 1.1 for ordering information | www.universalAET.com 1 2 3 4Wye AssemblyPartNumberSize6 688 8148 8168 8185 586 6106 6106 6108 8145 585585585 588 81210101410101410101410101481014EngineModelCat ® 398/399Cat ® 3516 Quad TurboCat ® 3516 Quad TurboCat ® 3516 Quad TurboOnan ® VTA28G1/2Onan ® KTA38G1/2Onan ® KTA38G3/4/5Onan ® KTA50G1/2Onan ® KTTA50G2Detroit 12V71TADetroit12V92TDetroit 16V71TDetroit 16V92TDetroit 12V149TDetroit 12V149TIBDetroit 16V149TDetroit 16V149TIBDetroit 24V71TADetroit 20V149TIMale NPT ConnectionsPart NumberSize1181.25 181.5 182 182.5 183 183.5 184 185 186 188 18For connector ordering information,please call 608-873-4272.

2.24Rotary Engine Positive ExhaustBlower Silencers SilencersSilencerAccessoriesGaskets, Caps, and OpeningsSee page 1.1 for ordering information | www.universalAET.com 1 2 3 4Explosion Relief CoverPartNumberQ34361Q34362Q34363Q34853Q34854Q34855Body Size10–1416–1822–2630–3642–4854–60Pressure ReliefCover Diameter4.1258.1258.25012.37516.00020.000Explosion relief covers are designed to open at5 PSI to protect silencer shell against rupturein case of backfire or explosion of residualgases within the exhaust system. One unit inthe first chamber of silencer is adequate.Gasket Kit (Nut/Bolt)Part NumberQ347458Q347459Q347460Q347461Q347462Q347463Q347464Q347465Q347466Q347467Q347468Inspection OpeningsPart NumberQ34822Q34852Insp Opening Sz5 78 10Size4.05.06.08.010.012.014.016.018.020.022.0Weight6.012.0Inspection openings have removable covers toprovide access to silencer internals forinspection or cleaning. One opening persilencer is recommended.GasketsPart NumberQ04166Q04167Q04168Q04169Q04170Q04171Q04172Q79468Q79469Q79470Q79471Size4.05.06.08.010.012.014.016.018.020.022.0Rain CapsPartNumberExhaust StackOutside DiameterSlotted Pipe End AdaptersPartNumber40707K40710K40713K40715K40720K40725K40730K40735K40740KSize NPT0.751.001.251.502.002.503.003.504.00(A)InsideDiameter.755/.7551.005/1.0251.255/1.2751.505/1.5252.005/2.0252.505/2.5353.005/3.0353.505/3.5454.005/4.045(B)Slots222244446(C)Overall Length2.52.53.03.04.05.05.56.06.5(D)Neck Length0.811.001.001.001.101.601.601.701.7089420A89425A89430A89435A89440A89450A89460A89480A89483A89482A89495A89484A89498A89486A89488A89492A89494A89496A2.002.503.003.504.005.006.008.008.2510.0010.4012.0012.4014.0016.0018.0020.0022.00

2.25 2.25Exhaust SilencersSilencerAccessoriesClamps and ElbowsEngine ExhaustRotary Silencers PositiveBlower SilencersOutlet ExtensionsPart Number40340K40350K40360K40380K40382K40384K40386K40388KSize4.05.06.08.010.012.014.016.0Length8.510.512.516.520.624.628.628.5Outlet Extensions include nuts, bolts and gasket.90° Outlet Elbows40640K40650K40660K40680K40682K40684KStyle 1 Style 2Part Number Style A B C1112224.0005.0006.0008.25010.37512.3756.58.512.512.014.016.07.59.012.012.014.016.090° Outlet Elbows include nuts, bolts, gaskets and 125/150# ASA drilled flanges; Style I short radius 90° (14GAD.Q.S.K. aluminized steel); Style II 90° mitered tube (12GA aluminized steel)See page 1.1 for ordering information | www.universalAET.com 1 2 3 4Mounting Bracket Clamp Style 1Part Number Size T B DQ186091Q27240Q186092Q27241Q27242Q272439.010.011.012.014.016.00.090.090.090.090.090.094.251.501.251.501.501.504.55.05.05.06.06.0G0.880.820.880.820.940.94Style 1Mounting Bracket Clamp Style 2Part Number Size T B D GQ27244Q27245Q27246Q27247Q2724818.022.026.030.036.018.322.1526.1530.2536.259.011.013.015.018.00.630.630.630.630.6311.1213.6215.4417.2520.12Mounting bracket clamps are available for silencers up to 36" body diameter. Type “F” brackets welded to silencersgreater than 36" in body diameter. Specifications are subject to change without notice, all dimensions are in inches.Split design allows for easier installation of larger silencers. Each part consists of two mounting brackets.Style 2

2.26Rotary Engine Positive ExhaustBlower Silencers SilencersSilencerAccessoriesWeld-On Mounting BracketsSee page 1.1 for ordering information | www.universalAET.com 1 2 3 4Exhaust SilencersType “B” Mounting Brackets*Body Diameter10.1211.1212.1214.1216.1218.1222.1226.1230.1236.1242.2548.2554.2560.25AC4 7.25C4 7.25C4 7.25C4 7.25C4 7.25C4 7.25C4 7.25C4 7.25C4 7.25C4 7.25C4 7.25C4 7.25C4 7.25C4 7.25B4.04.04.04.04.04.04.04.04.04.04.04.04.04.0C2.02.02.02.02.02.02.02.02.02.02.02.02.02.0*Add “N” to the part number when ordering a silencer with Type B brackets (for example, a 41180F would be ordered as 41180N).D0.5000.5000.5000.5000.5000.5000.5000.6250.6250.6250.6250.6250.8750.875E14.315.316.318.320.322.326.430.434.440.446.552.558.564.5

2.27 2.27SilencerAccessoriesWeld-On Mounting BracketsSee page 1.1 for ordering information | www.universalAET.com 1 2 3 4Engine ExhaustRotary Silencers PositiveBlower SilencersType “D” Mounting Brackets*Body Diameter10.1211.1212.1214.1216.1218.1222.1226.1230.1236.1242.2548.2554.2560.25A10.011.012.014.016.018.022.026.030.036.042.048.054.060.0B0.5000.5000.5000.5000.5000.5000.6250.6250.6250.8750.8751.1251.1251.125C6.06.06.06.06.06.06.06.06.06.07.07.07.07.0D0.50.50.50.50.50.50.50.50.50.50.50.50.50.5E2.0 2.0 .1872.0 2.0 .1872.0 2.0 .1872.0 2.0 .1872.0 2.0 .1872.0 2.0 .1873.0 3.0 .5003.0 3.0 .5003.0 3.0 .5003.0 3.0 .5004.0 4.0 .5004.0 4.0 .5004.0 4.0 .5004.0 4.0 .500F5.05.05.05.05.05.05.05.05.05.05.05.05.05.0*Add “E” to the part number when ordering a silencer with Type D brackets (for example, a 41180F would be ordered as 41180E).

2.28Rotary Engine Positive ExhaustBlower Silencers SilencersSilencerAccessoriesWeld-On Mounting BracketsSee page 1.1 for ordering information | www.universalAET.com 1 2 3 4Exhaust SilencersType “E” Mounting Brackets*Body Diameter10.1211.1212.1214.1216.1218.1222.1226.1230.1236.1242.2548.2554.2560.25AC4 7.25C4 7.25C4 7.25C4 7.25C4 7.25C4 7.25C4 7.25C4 7.25C4 7.25C4 7.25C4 7.25C4 7.25C4 7.25C4 7.25B4.04.04.04.04.04.04.04.04.04.04.04.04.04.0C2.02.02.02.02.02.02.02.02.02.02.02.02.02.0D0.5000.5000.5000.5000.5000.5000.5000.6250.6250.6250.6250.6250.8750.875E14.315.316.318.320.322.326.430.434.440.446.552.558.564.5*Add “C” to the part number when ordering a silencer with Type E brackets (for example, a 41180F would be ordered as 41180C).

2.29 2.29SilencerAccessoriesWeld-On Mounting BracketsEngine ExhaustRotary Silencers PositiveBlower SilencersSee page 1.1 for ordering information | www.universalAET.com 1 2 3 4Type “F” Mounting Brackets*Body Dia. A B C D8.129.0010.1211.1212.1214.1216.1218.1222.1226.1230.1236.1242.2548.2554.2560.250.2500.2500.3750.3750.3750.3750.3750.3750.5000.5000.5000.5000.5000.5000.5000.5007.07.08.09.010.013.015.017.020.024.029.032.034.039.044.049.02.02.02.52.52.52.52.52.53.03.04.04.04.04.04.04.05.05.06.07.08.011.013.015.018.022.026.028.030.035.040.045.0E0.750.751.001.001.001.001.001.001.001.001.501.501.501.501.501.50F0.4380.4380.5000.5000.5000.5000.5000.5000.6250.6250.8750.8751.1251.1251.2501.250G5.04.51.55.05.56.06.57.07.08.09.010.010.011.011.012.0H3.693.693.553.553.553.553.523.523.363.363.363.363.363.323.323.32J4.114.555.145.646.147.148.179.1711.2213.2415.2418.2621.2624.3027.3330.33K1.51.52.02.02.02.02.02.02.02.03.03.03.03.03.03.0L16.016.014.014.014.014.012.012.010.010.010.010.010.07.07.07.0*Add “Y” to the part number when ordering a silencer with Type F brackets (for example, a 41180F would be ordered as 41180Y).

2.30Rotary Engine Positive ExhaustBlower Silencers SilencersSilencerAccessoriesMounting FlangesSee page 1.1 for ordering information | www.universalAET.com 1 2 3 4Mounting Flanges (Unthreaded)PartNumber40140K40150K40160K40180K40182K40184K40186K40188K40199K40121K40122KNominalPipe Size4.05.06.08.010.012.014.016.018.020.022.0A B C4.5635.6256.1878.75010.87512.87514.18816.00018.00020.00022.0007.508.509.5011.7514.2517.0018.7521.2522.7525.0027.25A “kit” consists of a mounting flange for eachinlet and outlet, a gasket, and one capscrewand nut for each inlet and outlet mountinghole. Available in dual or single flange kits.0.7500.8750.8750.8751.0001.0001.1251.1251.2501.2501.375D9.010.011.013.516.019.021.023.525.027.529.5E0.5000.5000.5000.5000.6250.6250.6250.6250.6250.7500.750Holes888812121216162020Listed part number for dual flange kits. Pleasecall for single flange kits.Mounting Flanges (Threaded)PartNumberA B C DEFGHoles40040K40050K40060K40080K45687.508.509.5011.750.7500.8750.8750.8759.010.011.013.51.311.441.561.750.940.941.001.125.316.447.569.758888A “kit” consists of a mounting flange for eachinlet and outlet, a gasket, and one capscrewand nut for each inlet and outlet mountinghole. Available in dual or single flange kits.Listed part number for dual flange kits. Pleasecall for single flange kits.

Global SupportContact a global office for assistance in the design and manufacture of your exhaust requirements.Corporate HeadquartersManufacturing LocationsBusiness OfficesEje 120 No. 350Zona Industrial 1a. Seccion78090 San Luis Potosi, S.L.P.MexicoPhone 52-444-870-4708info@universalAET.comUnit 2, BarleyfieldHinckleyLeicestershireLE10 IYEPhone 44-1455-894470UKcontacts@universalAET.com71 Bukit Batok Crescent #05-07Prestige CentreSingapore 658071SingaporePhone 65-6665-67710AsiaPacific@universalAET.comSuite 13C, No 58 Xin Jin Qiao RdShanghai 201206ChinaPhone 86-21-50303658China@universalAET.comZeppelinstrasse 482178 PuchheimGermanyPhone 49 (0) 89 800 650 90GmbH@universalAET.com1925 Highway 51/138P.O. Box 411Stoughton, WI 53589 USAPhone 1-608-873-4272info@univeralAET.com1925 Highway 51/138P.O. Box 411Stoughton, WI 53589 USAToll-Free (888) 300-4272Fax (608) 873-4298info@universalAET.comwww.universalAET.com