GT Exhaust Systems, Inc - Powertherm Co. Inc

GT Exhaust Systems, Inc.
• Toll Free: 800-775-2466
• Phone: 402-323-7272
• Fax: 402-323-7270
• E-mail: gtexhaust@gtexhaustsystems.com
• Web Site: www.gtexhaustsystems.com
106
Lincoln, Nebraska
106
Emmision
Silencer
Catalog

GT Exhaust Systems, Inc.
Complete Product Line for the Industrial Engine Market
Power Generation, Gas Compression, Power Units
• 3-Way Catalysts
Providing NOX, CO and HC control for rich burn gas engines
• Oxidation Catalysts
Providing CO and HC control for lean burn gas and Diesel engines
• Catalyzed Soot Filters
Providing Self Cleaning Particulate, CO and HC control for Diesel engines
A Variety of Silencer Options and Configuration
• Stainless , Aluminized , or Carbon Steel Construction
• End or Side Inlet tailored to your installation requirements
• Available with dual inlets
• Designed to meet your application
• Special Sizes available when space is a problem
• Special construction minimizes potential damage from backfire
• Modular catalytic elements
• Designed with easy access for cleaning and maintenance
• Sampling and control instrument ports provided
Note: Most HC (hydrocarbon) considerations exclude methane and ethane hydrocarbons. Consult factory for these concerns.
402-323-7272 Toll Free 1-800-775-2466 Fax 402-323-7270
Email gtexhaust@gtexhaustsystems.com 106 Technical Assistance 903-758-3624 or 402-323-7298
2

Oxidation and 3-Way
Catalysts
Catalytic elements provide a continuous on-line
corrugating, catalyst coating and honeycomb process,
which produces an even coating of catalyst material both
axially and around the cell walls. Eliminates uneven
coating distribution encountered on many post-coating
products. Result is longer life with effective utilization of
catalyst materials, while at the same time maintaining
wider cell openings to minimize blocking. The herringbone
corrugation patterns provide superior emission reduction
efficiency with minimal pressure drop.
Catalyst features angled channels that create turbulence
and a complex gas path that promotes mixing. This
provides 45 to 50% higher mass transfer rate than the
laminar flow that occurs in narrow parallel channels.
Channels are designed to enhance gas mixing, while, at
the same time, protect against plugging.
The herringbone corrugation pattern provides stronger
stacking for catalytic abatement applications, and prevents
nesting of catalyst.
CO Conversion, %
Herringbone Gives Lower Pressure Drop Than Straight
Honeycombs to achieve the same Conversion
99
98
97
96
95
94
93
92
91
90
0.50 0.70 0.90 1.10
2 mil thickness, 24 ft/s at 650F
Herringbone 155 cpsi
Pressure Drop, inch water
Straight, 230 CPSI
Note: Most HC (hydrocarbon) considerations exclude methane and ethane hydrocarbons. Consult factory for these concerns.
GT Exhaust Systems, Inc.
Gas Flow
The Oxidation Catalysts provide hydrocarbon and CO abatement with secondary particulate reduction for diesel applications, and
CO and Non-Methane Hydrocarbons (NMHC) abatement from lean burn natural gas and LPG Engines. High reduction of
aldehydes removes the characteristic objectionable odor of LPG and Diesel exhaust.
402-323-7272 Toll Free 1-800-775-2466 Fax 402-323-7270
Email gtexhaust@gtexhaustsystems.com 106 Technical Assistance 903-758-3624 or 402-323-7298
3

GT Exhaust Systems, Inc.
The 3-Way Catalyst uses non-selective catalytic reduction (NSCR) to reduce NOX and is designed for rich-burning (fuel rich) gas
engines operated at or very close, to a stoichiometric air/fuel ratio. NOX catalytically is reduced to nitrogen while providing oxygen
that reacts with Carbon Monoxide (CO), hydrocarbons (CXHX), aldehydes, and poly aromatic hydrocarbons (PAH), oxidizing them
to carbon dioxide (CO2) and water vapor (H2O).
Catalytic Oxidation
C2H2n+2
CO
Aldehydes
HC
PAH
SO2
NO
Soot
Metals
PAH
SO2+H2O
CO + 1/2 O2
HC + O2
PAH + O2
Aldehydes + O2
3-Way Catalyst Reaction Two Step Process
Flow through monolith
with catalytic coating
CO2
CO2 + H2O
CO2 + H2O
CO2 + H2O
CO2
H2O
SO2 /SO3
NO /NO2
Soot
Metals
SO2+H2O
1. Deplete Oxygen (Oxidize CO with any “free or excess” O2 that may be in the exhaust gas;
this must be no more than 0.5% excess air relative to stoichiometric)
2CO + O2 = 2CO2
CmHn + (m + n/4)O2 = mCO2 + n/2H2O
2. Convert NOx (NO and NO2 are chemically reduced to Nitrogen (N2) making the oxygen
available to chemically oxidize the CO to CO2)
NO + CO = 1/2N2 + CO2
2NO2 + 4CO = N2 + 4CO2
It should be noted that atoms are recombined (referred to as “conversion”) from emission molecules to harmless
byproducts. The amount of conversion is commonly reported as reduction (percent) for internal combustion engine
catalysts. The term “destruction” is also used instead of reduction, but nothing is really destroyed.
Note: Most HC (hydrocarbon) considerations exclude methane and ethane hydrocarbons. Consult factory for these concerns.
402-323-7272 Toll Free 1-800-775-2466 Fax 402-323-7270
Email gtexhaust@gtexhaustsystems.com 106 Technical Assistance 903-758-3624 or 402-323-7298
4

Catalytic Silencer Options and Models
GT Exhaust Systems, Inc.
GT Catalytic Silencers are available in Carbon Steel, Aluminized Carbon Steel, or Stainless Steel. Standard sizes available from 4 thru 30” Inlets &
Outlets and with 1 thru 8 elements. Larger sizes available as special application designs. Special Modular Design allow selection of larger body
with fewer active elements for now, providing option for increased performance by simply installing additional active elements at a later date.
201 signifies round
body.
501 signifies oval
Special Requests
(See Chart Below)
Available in Conventional Round and Low Profile Special Request Designs.
Designed to simplify installation while maintaining high degree of sound attenuation
Greater variety of inlet and outlet configurations.
Internal blast plate minimizes (virtually precludes) damage to elements due to backfire.
Rental fleet owners have option of removing elements for safe storage where catalytic action is not required.
201V3-4-300-4118-2-xxxxx
Catalyst Element Type
V3 = Three Way Element
VO = Oxidation Element
Maximum No. of elements
this unit accommodates or
“R” for 1100 Series
Silencer Design Options
201V3 - 4 - 3 1 - 4118 - 2- xxxxx
201 Round Silencer Body
211 Dual Inlet Round Body for Cummins Engines
216 Dual Inlet Round Body for Caterpillar Engines
218 Dual Inlet Round Body for DDA/Kohler Engines
501 Oval Body (Special Requests)
511 Dual Inlet Oval Body for Cummins Engines
516 Dual Inlet Oval Body for Caterpillar Engines
518 Dual Inlet Oval Body for DDA/Kohler Engines
ment 2
Inlet & Outlet Configuration
1 End Inlet (x) End Outlet
2 Side Inlet (x) End Outlet
3 Side Inlet (x) Side Outlet
4 End Inlet (x) Side Outlet
Style – Inlet and Outlet Configuration
Silencer Grade and outlet size
Part Number Identification System
Print Number. Refer to this drawing
number for detail specifications, special
modifications, and/or add-ons.
Number of elements installed at the factory or diameter of 1100 round element.
In this example it will have: 3 full panels and one blank panel 2
A “3.5” for example indicates 3 full panels, 1 half panel, and 1 blank half panel 2 .
Panel Elements Part No’s
Element Options
VO Oxidation Element
V3 Three Way Element
Element Dimensions 3
Rectangular Oxidation or Three Way Full Panel
Rectangular Oxidation or Three Way Half Panel
Round Elements for 1100 Series Only
Oxidation Part No Three Way Part No Nom Size
15.44 x 24.75 x 3.80”
15.44 x 12.38 x 3.80”
R-60 R-63 6” 6” Dia x 3.5” lg
R-80 R-83 8” 8” Dia x 3.5” lg
R-100 R-103 10” 10” Dia x 3.5” lg
R-120 R-123 12” 12” Dia x 3.5” lg
R-140 R-143 14” 14” Dia x 3.5” lg
R-160 R-163 16” 16” Dia x 3.5” lg
CE-1136 Three Way Full Panel 15.44 x 24.75
CE-1241 Three Way Half Panel 15.44 x 12.38
CE-7140 Oxidation Full Panel 15.44 x 24.75
CE-7141 Oxidation Half Panel 15.44 x 12.38
1 Our Industrial 1100 Series features one or two (back to back) round elements to choose from. Its unique numbering system shows the element/silencer
diameter as shown with the 6 inch diameter number: 201VO-R-P06-1103-xxxx. “P” would be 1 or 2 for the element quantity. See page 7 for more details.
2 Blank panels are removable and can be replaced by the customer with a catalytic element of the same size for additional performance.
3 Dimensions are for the element only, and may not reflect retainer rings, brackets, frames, gaskets or other retaining devices as may be applicable.
402-323-7272 Toll Free 1-800-775-2466 Fax 402-323-7270
Email gtexhaust@gtexhaustsystems.com 106 Technical Assistance 903-758-3624 or 402-323-7298
5

1100 Series GT Exhaust Systems, Inc.
Oxidation and Three Way Lincoln, Nebraska
Compact Catalytic Converter Muffler
� Inlet and Outlet Nozzles equipped with test ports
� Stainless Body
� Slotted ID Cuffs are standard in 304 Stainless. Flanges and Nipples are standard in carbon steel.
OXIDATION APPLICATION
Muffler incorporates a passive system utilizing an oxidation
catalyst element to provide HC, Aldehyde and CO abatement
with visible smoke and exhaust odor reduction for diesel, lean
burn natural gas and LPG Engines.
THREE WAY APPLICATION
Muffler incorporate a passive system utilizing a non-selective
catalytic reduction (NSCR) to reduce NOX and oxidize CO and
HC from rich-burning (fuel rich) gas engines operated at or very
close to a stoichiometric air/fuel ratio. For optimum
performance, engines must be equipped with an air/fuel ratio
controller. NOX catalytically is reduced to nitrogen while
providing oxygen that reacts with Carbon Monoxide (CO) and
hydrocarbons (CXHX), oxidizing them to carbon dioxide (CO2)
and water vapor (H2O).
Typical attenuation : 1100 Series 5 to 10 dB’A’
CONSTRUCTION
All welded heavy-duty 304 stainless steel body. Slotted ID
Cuffs are standard in 304 Stainless Steel. Flanges and Nipples
are standard in carbon steel. Consult factory for additional
material options.
INLET / OUTLET CONNECTION OPTIONS
ANSI or Engine Flange: 2 thru 16” Models
Male Pipe Threads: 2 thru 6” Models
Stainless Steel Slotted ID Cuffs: 2 thru 6” Models
Please specify inlet and outlet fittings at time of order.
Element
Diameter
201-V-1100 Series 1
For Both Oxidation and Three Way
Catalytic Elements
Body
Dia
Max
Outlet
Nozzle
OAL
1 Element 2 Elements
6 6 4 21 25
8 8 5 22 26
10 10 6 24 28
12 12 8 25 29
14 14 10 27 31
16 16 12 29 33
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Email gtexhaust@gtexhaustsystems.com
106 Technical Assistance 903-758-3624 or 402-323-7298
BODY
DIA
BODY
DIA
BODY
DIA
OAL
CUFF
OAL
.50” DRAIN
.50” DRAIN
MALE PIPE THREADS
OAL
.50” DRAIN
FLANGE
TEST PORTS:
Inlet / Outlet Nozzles feature (1) ½” Half Coupling per nozzle. Inlet Nozzles feature (1) 18 mm Oxygen Sensor Port.
1 See the following page for more part numbering details.
INLET
.50” NPT
COUPLING ON
INLET AND OUTLET
NOZZLES
18 mm OXYGEN
SENSOR PORT
ON INLET NOZZLES
INLET
.50” NPT
COUPLING ON
INLET AND OUTLET
NOZZLES
18 mm OXYGEN
SENSOR PORT
ON INLET NOZZLES
INLET
.50” NPT
COUPLING ON
INLET AND OUTLET
NOZZLES
6

201V- 2100 Series GT Exhaust Systems, Inc.
Oxidation & Three Way Lincoln, Nebraska
Catalytic Converter Silencer
� Easy access allows quick installation / removal of catalyst elements
� Inlet and Outlet Nozzles equipped with test ports
OXIDATION APPLICATION
Silencers incorporate a passive system utilizing oxidation
catalyst element to provide HC, Aldehyde and CO abatement
with visible smoke and exhaust odor reduction for diesel, lean
burn natural gas and LPG Engines.
THREE WAY APPLICATION
Silencers incorporate a passive system utilizing non-selective
catalytic reduction (NSCR) to reduce NOX and oxidize CO and
HC from rich-burning (fuel rich) gas engines operated at or very
close to a stoichiometric air/fuel ratio. For optimum
performance, engines must be equipped with an air/fuel ratio
controller. NOX catalytically is reduced to nitrogen while
providing oxygen that reacts with Carbon Monoxide (CO) and
hydrocarbons (CXHX), oxidizing them to carbon dioxide (CO2)
and water vapor (H2O).
Typical attenuation : 2100 Series 14 to 20 dB’A’
CONSTRUCTION
All welded heavy-duty carbon steel body. Inlets and Outlets are
standard with 125/150# ANSI Flanges. Optional fittings are
available upon request.
Available in Stainless Steel. Consult factory for additional
material options.
Max
Elements
201V-1-2100 1 Panel Element
For Oxidation and Three Way Catalytic Elements
Outlet
Dia
Body
Dia
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Out
Insertion Loss in Decibels
(Ref 0.0002 Microbars)
Max
Elements
30
25
20
15
10
5
0
Representative Attenuation Curve for
201V-2100 Catalytic Silencer
OCTAVE BAND
63 Hz 125
Hz
250
Hz
500
Hz
1000
Hz
2000
Hz
Center Frequency Hz
201V-2-2100 2 Panel Element
For Oxidation and Three Way Catalytic Elements
Outlet
Dia
Body
Dia
OAL 1
End Inlet
OAL 2
Side Inlet
4000
Hz
8000
Hz
OAL 3
Side
Inlet/Outlet
1 4 20 52 53 2 8 28 66 73
1 5 20 52 53 2 10 28 66 73
1 6 20 52 53 Consult 2 12 28 65 73 Consult
1 8 20 51 53 Factory 2 14 28 65 73 Factory
1 10 20 51 59 2 16 30 65 73
1 12 22 51 59 2 18 30 64 85
1 14 22 51 59 2 20 30 64 85
Max
Elements
201V-4-2100 4 Panel Element
For Oxidation and Three Way Catalytic Elements
Outlet
Dia
Body
Dia
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Out
Max
Elements
201V-6-2100 & 201V-8-2100 6 & 8 Panel Element
For Oxidation and Three Way Catalytic Elements
Outlet
Dia
Body
Dia
OAL 1
End Inlet
OAL 2
Side Inlet
OAL 3
Side
Inlet/Outlet
4 8 42 60 67 6/8 10 42 82/95 90/103
4 10 42 59 67 6/8 12 42 82/95 90/103
4 12 42 59 67 Consult 6/8 14 42 82/95 102/103 Consult
4 14 42 59 79 Factory 6/8 16 42 81/95 101/102 Factory
4 16 42 58 78 6/8 18 42 93/94 101/114
4 18 42 58 78 6/8 20 42 93/94 101/114
4 20 42 58 78 6/8 22 42 92/93 101/114
4 22 42 57 78 6/8 24 42 92/92 101/113
4 24 42 57 77 6/8 26 42 91/92 100/113
Note: A 20” minimum clearance is required for removal of the element through the access opening(s) on the converter silencer.
402-323-7272 Toll Free 1-800-775-2466 Fax 402-323-7270
Email gtexhaust@gtexhaustsystems.com 106 Technical Assistance 903-758-3624 or 402-323-7298
8

201V- 4100 Series GT Exhaust Systems, Inc.
Oxidation & Three Way Lincoln, Nebraska
Catalytic Converter Silencer
� Easy access allows quick installation / removal of catalyst elements
� Inlet and Outlet Nozzles equipped with test ports
OXIDATION APPLICATION
Silencers incorporate a passive system utilizing oxidation
catalyst element to provide HC, Aldehyde and CO abatement
with visible smoke and exhaust odor reduction for diesel, lean
burn natural gas and LPG Engines.
THREE WAY APPLICATION
Silencers incorporate a passive system utilizing non-selective
catalytic reduction (NSCR) to reduce NOX and oxidize CO and
HC from rich-burning (fuel rich) gas engines operated at or very
close to a stoichiometric air/fuel ratio. For optimum
performance, engines must be equipped with an air/fuel ratio
controller. NOX catalytically is reduced to nitrogen while
providing oxygen that reacts with Carbon Monoxide (CO) and
hydrocarbons (CXHX), oxidizing them to carbon dioxide (CO2)
and water vapor (H2O).
Typical attenuation : 4100 Series 22 to 29 dB’A’
CONSTRUCTION
All welded heavy-duty carbon steel body. Inlets and Outlets
are standard with 125/150# ANSI Flanges. Optional fittings are
available upon request.
Available in Stainless Steel. Consult factory for additional
material options.
Max
Elements
201V-1-4100 1 Panel Element
For Oxidation and Three Way Catalytic Elements
Outlet
Dia
Body
Dia
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Out
Max
Elements
Insertion Loss in Decibels
(Ref 0.0002 Microbars)
35
30
25
20
15
10
5
0
Representative Attenuation Curve for
201V-4100 Catalytic Silencer
OCTAVE BAND
63 Hz 125
Hz
250
Hz
500
Hz
1000
Hz
2000
Hz
Center Frequency Hz
201V-2-4100 2 Panel Element
For Oxidation and Three Way Catalytic Elements
Outlet
Dia
Body
Dia
OAL 1
End Inlet
OAL 2
Side Inlet
4000
Hz
8000
Hz
OAL 3
Side
Inlet/Outlet
1 4 20 58 53 54 2 8 28 90 85 81
1 5 20 58 53 55 2 10 28 102 98 94
1 6 20 64 59 60 2 12 28 101 97 93
1 8 20 76 72 67 2 14 30 113 109 105
1 10 22 88 83 78 2 16 36 115 111 107
1 12 26 88 84 80 2 18 36 114 111 107
1 14 30 101 97 93 2 20 42 131 127 123
Max
Elements
201V-4-4100 4 Panel Element
For Oxidation and Three Way Catalytic Elements
Outlet
Dia
Body
Dia
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Out
Max
Elements
201V-6-4100 & 201V-8-4100 6 & 8 Panel Element
For Oxidation and Three Way Catalytic Elements
Outlet
Dia
Body
Dia
OAL 1
End Inlet
OAL 2
Side Inlet
OAL 3
Side
Inlet/Outlet
4 8 36 104 99 94 6/8 10 42 106/108 102/104 97/100
4 10 36 116 111 106 6/8 12 42 118/120 114/116 109112
4 12 36 116 111 106 6/8 14 42 118/120 114/116 109/112
4 14 36 128 124 120 6/8 16 42 118/120 114/116 109/112
4 16 36 128 124 120 6/8 18 42 129/131 125/127 121/123
4 18 36 140 135 130 6/8 20 42 141/143 137/139 121/135
4 20 42 142 138 134 6/8 22 48 142/145 138/141 135/137
4 22 48 144 140 136 6/8 24 54 144/145 140/141 136/137
4 24 54 145 141 137 6/8 26 60 157/160 154/156 150/152
Note: A 20” minimum clearance is required for removal of the element through the access opening(s) on the converter silencer.
402-323-7272 Toll Free 1-800-775-2466 Fax 402-323-7270
Email gtexhaust@gtexhaustsystems.com 106 Technical Assistance 903-758-3624 or 402-323-7298
10

201V- 5100 Series GT Exhaust Systems, Inc.
Oxidation & Three Way Lincoln, Nebraska
Catalytic Converter Silencer
� Easy access allows quick installation / removal of catalyst elements
� Inlet and Outlet Nozzles equipped with test ports
OXIDATION APPLICATION
Silencers incorporate a passive system utilizing oxidation catalyst
element to provide HC, Aldehyde and CO abatement with visible
smoke and exhaust odor reduction for diesel, lean burn natural gas
and LPG Engines.
THREE WAY APPLICATION
Silencers incorporate a passive system utilizing non-selective catalytic
reduction (NSCR) to reduce NOX and oxidize CO and HC from richburning
(fuel rich) gas engines operated at or very close to a
stoichiometric air/fuel ratio. For optimum performance, engines must
be equipped with an air/fuel ratio controller. NOX catalytically is
reduced to nitrogen while providing oxygen that reacts with Carbon
Monoxide (CO) and hydrocarbons (CXHX), oxidizing them to carbon
dioxide (CO2) and water vapor (H2O).
Typical attenuation : 5100 Series 27 to 35 dB’A’
CONSTRUCTION
All welded heavy-duty carbon steel body. Inlets and Outlets are
standard with 125/150# ANSI Flanges. Optional fittings are available
upon request.
Available in Stainless Steel. Consult factory for additional material
options.
Max
Elements
201V-1-5100 1 Panel Element
For Oxidation and Three Way Catalytic Elements
Outlet
Dia
Body
Dia
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Out
Max
Elements
Insertion Loss in Decibels
(Ref 0.0002 Microbars)
50
40
30
20
10
0
Representative Attenuation Curve for
201V-5100 Catalytic Silencer
OCTAVE BAND
63 Hz 125
Hz
250
Hz
500
Hz
1000
Hz
2000
Hz
Center Frequency Hz
201V-2-5100 2 Panel Element
For Oxidation and Three Way Catalytic Elements
Outlet
Dia
Body
Dia
OAL 1
End Inlet
OAL 2
Side Inlet
4000
Hz
OAL 3
Side
Inlet/Outlet
1 4 20 88 83 78 2 8 28 102 97 92
1 5 20 88 83 78 2 10 28 114 110 105
1 6 20 100 95 90 2 12 36 128 123 118
1 8 24 101 96 91 2 14 36 152 148 144
1 10 28 102 98 93 2 16 42 155 151 147
1 12 36 116 111 106 2 18 48 156 152 148
1 14 36 140 136 132 2 20 48 180 176 172
Max
Elements
201V-4-5100 4 Panel Element
For Oxidation and Three Way Catalytic Elements
Outlet
Dia
Body
Dia
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Out
Max
Elements
201V-6-5100 & 201V-8-5100 6 & 8 Panel Element
For Oxidation and Three Way Catalytic Elements
Outlet
Dia
Body
Dia
OAL 1
End Inlet
OAL 2
Side Inlet
OAL 3
Side
Inlet/Outlet
4 8 36 140 135 130 6/8 10 42 155/168 150/164 145/160
4 10 36 152 147 142 6/8 12 42 166/168 162/164 157/160
4 12 36 152 147 142 6/8 14 42 166/180 162/175 157/170
4 14 36 164 160 156 6/8 16 42 166/178 162/174 157/170
4 16 42 155 151 147 6/8 18 48 179/192 175/188 171/184
4 18 48 156 152 148 6/8 20 48 191/192 107/188 183/184
4 20 48 180 176 172 6/8 22 54 204/217 200/213 196/209
4 22 54 181 177 173 6/8 24 60 218/230 214/228 210/224
4 24 60 195 191 187 6/8 16 64 232/244 228/240 225/236
Note: A 20” minimum clearance is required for removal of the element through the access opening(s) on the converter silencer.
402-323-7272 Toll Free 1-800-775-2466 Fax 402-323-7270
Email gtexhaust@gtexhaustsystems.com 106 Technical Assistance 903-758-3624 or 402-323-7298
8000
Hz
12

201V- 6100 Series GT Exhaust Systems, Inc.
Oxidation & Three Way Lincoln, Nebraska
Catalytic Converter Silencer
� Easy access allows quick installation / removal of catalyst filters
� Inlet and Outlet Nozzles equipped with test ports
OXIDATION APPLICATION
Silencers incorporate a passive system utilizing oxidation catalyst
element to provide HC, Aldehyde and CO abatement with visible smoke
and exhaust odor reduction for diesel, lean burn natural gas and LPG
Engines.
THREE WAY APPLICATION
Silencers incorporate a passive system utilizing non-selective catalytic
reduction (NSCR) to reduce NOX and oxidize CO and HC from richburning
(fuel rich) gas engines operated at or very close to a
stoichiometric air/fuel ratio. For optimum performance, engines must be
equipped with an air/fuel ratio controller. NOX catalytically is reduced to
nitrogen while providing oxygen that reacts with Carbon Monoxide (CO)
and hydrocarbons (CXHX), oxidizing them to carbon dioxide (CO2) and
water vapor (H2O).
Typical attenuation : 6100 Series: 30 to 38 dB’A’
CONSTRUCTION
All welded heavy-duty carbon steel body. Inlets and Outlets are
standard with 125/150# ANSI Flanges. Optional fittings are available
upon request.
Available in Stainless Steel. Consult factory for additional material
options.
Max
Elements
201V-1-6100 1 Panel Element
For Oxidation and Three Way Catalytic Elements
Outlet
Dia
Body
Dia
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Out
Max
Elements
Insertion Loss in Decibels
(Ref 0.0002 Microbars)
50
40
30
20
10
0
Representative Attenuation Curve for
201V-6100 Catalytic Silencer
OCTAVE BAND
63 Hz 125
Hz
250
Hz
500
Hz
1000
Hz
2000
Hz
Center Frequency Hz
201V-2-6100 2 Panel Element
For Oxidation and Three Way Catalytic Elements
Outlet
Dia
Body
Dia
OAL 1
End Inlet
OAL 2
Side Inlet
4000
Hz
OAL 3
Side
Inlet/Outlet
1 4 20 88 83 78 2 8 28 126 121 116
1 5 20 100 95 90 2 10 30 138 134 130
1 6 24 101 96 91 2 12 36 140 136 132
1 8 28 114 109 104 2 14 42 154 150 146
1 10 30 126 121 116 2 16 48 168 164 160
1 12 36 128 124 120 2 18 48 168 164 160
1 14 42 142 138 134 2 20 54 193 189 185
Max
Elements
201V-4-6100 4 Panel Element
For Oxidation and Three Way Catalytic Elements
Outlet
Dia
Body
Dia
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Out
Max
Elements
201V-6-6100 & 201V-8-6100 6 & 8 Panel Element
For Oxidation and Three Way Catalytic Elements
Outlet
Dia
Body
Dia
OAL 1
End Inlet
OAL 2
Side Inlet
OAL 3
Side
Inlet/Outlet
4 8 36 140 135 130 6/8 10 42 166/168 162/164 157/160
4 10 36 152 147 142 6/8 12 42 166/168 162/164 157/160
4 12 36 152 148 144 6/8 14 42 178/192 174/187 169/183
4 14 42 168 163 159 6/8 16 48 191/205 187/201 183/197
4 16 48 169 165 161 6/8 18 48 203217 199/213 195/209
4 18 48 181 177 173 6/8 20 54 205/217 201/213 197/209
4 20 54 181 177 173 6/8 22 60 218/244 214/240 210/236
4 22 60 208 204 200 6/8 24 62 221/243 217/240 213/236
4 24 62 207 203 199 6/8 26 64 244/268 241/264 238/260
Note: A 20” minimum clearance is required for removal of the elements through the access opening(s) on the converter silencer
402-323-7272 Toll Free 1-800-775-2466 Fax 402-323-7270
Email gtexhaust@gtexhaustsystems.com 106 Technical Assistance 903-758-3624 or 402-323-7298
8000
Hz
14

Diesel Particulate Filters GT Exhaust Systems, Inc.
(Catalyzed Soot Filters) Lincoln, Nebraska
Diesel particulate matter (soot) is composed of solid as well as liquid. Particulates consist of liquid
heavy hydrocarbon, carbon soot, water, and hydrated sulfuric acid. Carbon monoxide (CO), a
poisonous gas produced by incomplete combustion, is created when fuel is burned. Incomplete
burning results in hydrocarbon emissions (HC).
GT Silencer and Filter Combination
CAT 3516 2 MW – California generator source testing
100%
80%
60%
40%
20%
0%
% Emission Reduction
CO HC DPM
Diesel with Catalyzed Particulate Filter
Diesel emissions account for approximately 70% of all particulate
matter contaminating our air, and is now classified as a toxic air
contaminant by the California Air Resources Board. The longevity
associated with Diesel engines will require retrofits in order to
achieve ambient air pollution reductions.
GT Silencers utilizes catalyzed particulate filters to dramatically
reduce Diesel emissions. The advanced technology behind the
catalyzed Diesel particulate filters help engines to comply with
governmental emissions regulations by reducing toxic levels of
Diesel particulate matter, carbon monoxide and hydrocarbons.
The filter consists of a cellular ceramic substrate. Exhaust gases
enter a honeycombed maze of channels that actually captures the
particulates. The filter is designed to be self-regenerating. The
special catalytic coatings on the filter substrate interact with the
gases and carbon particles to create complex chemical reactions.
The interaction between the exhaust gas and the filter
creates a chemical reaction, which converts carbon monoxide and
hydrocarbons into harmless carbon dioxide and water vapors.
Virtually all particles larger than 35 nanometers are efficiently
removed from the exhaust. Tests have shown that up to 95% of the
DPM is removed. Hydrocarbons and carbon monoxide are also
reduced by up to 95%.
The regeneration process is dependent on exhaust temperatures. High sulfur fuels (greater than 15 ppm sulfur
content) require a minimum exhaust temperature of 375 to 390 C (approx 700 to 735 F). Ultra low sulfur fuels
(less than 15 ppm sulfur content) require a minimum temperature range of 340 to 350 C (approx 645 to 665 F).
GT Exhaust Systems catalyzed Diesel particulate filter silencer features a special thermal wall inserted
between the double shells. This construction is modified to prevent any fiberglass from escaping into to
exhaust systems or filters. The thermal wall aids in capturing and retaining the exhaust temperature while the
gases pass through the silencer, allowing for optimal regeneration and performance of the catalyzed Diesel
particulate filters.
402-323-7272 Toll Free 1-800-775-2466 Fax 402-323-7270
Email gtexhaust@gtexhaustsystems.com 106 Technical Assistance 903-758-3624 or 402-323-7298
16

Diesel Particulate Filters GT Exhaust Systems, Inc.
(Catalyzed Soot Filters) Lincoln, Nebraska
Test results of GT Exhaust filters incorporated in a GT Exhaust Silencer
To meet the 85% particulate reduction requirement of the California Air Resources Board (CARB) and the local AQMD, GT Exhaust filters
incorporated inside a GT Exhaust critical grade, low profile silencer were installed on a MY2000 Caterpillar 3516B, 2 megawatt generator set
operating on ultra low sulfur diesel fuel. Emissions source testing was performed on the generator set. Gaseous analyses for carbon monoxide
(CO) and total hydrocarbon (THC) emissions were performed conforming to CARB Method 100 for Stationary Source Testing, and particulate
matter (PM) analysis was performed conforming to
CARB Method 5 for Stationary Sources. Method 5 is
a more encompassing measurement of particulate than
the EPA full-dilution method, as liquid and gaseous
components in the exhaust stream are included in the
PM measurement.
The graph illustrates the high reductions for PM,
carbon monoxide (CO), and total hydrocarbons
(THC). Three different load operations were tested:
50% load, or 1 MW, 75% load or 1.5 MW, and 100%
load or 2MW. Results from each load are presented
along with the weighted ISO8178 average. The
average reduction for PM is 85%, CO and THC
reductions are extremely high, >95% and >90%,
respectively. These high reductions confirm those
obtained by other 3 rd party testing on GT Exhaust
System products, such as at the Southwest Research
Institute in San Antonio, TX and the Motor Test
Center in Sweden.
501 signifies
oval body
501DF-4-4118-2-xxxxx
Signifies Diesel
Particulate
Filter Element
Maximum No. of Diesel
Particulate Filter Elements
installed in the Silencer
Silencer Design Options
GT Silencer and Filter Combination
CAT 3516 2 MW – California generator source testing
Part Number Identification System
501DF - 4 - 4118 - 2- xxxxx
501 Oval Body
511 Dual Inlet Oval Body for Cummins Engines
516 Dual Inlet Oval Body for Caterpillar Engines
518 Dual Inlet Oval Body for DDA/Kohler Engines
Style – Inlet and Outlet Configuration
Silencer Grade and outlet size
Print Number. Refer to this drawing
number for detail specifications, special
modifications, and/or add-ons.
Filter Element Part No and Dimensions
DF-1500 15.78” Diameter (x) 15.38” long
402-323-7272 Toll Free 1-800-775-2466 Fax 402-323-7270
Email gtexhaust@gtexhaustsystems.com 106 Technical Assistance 903-758-3624 or 402-323-7298
17

501DF- 4100 Series GT Exhaust Systems, Inc.
Diesel Particulate Filter Silencers Lincoln, Nebraska
� Easy access allows quick installation / removal of filters
� Inlet and Outlet Nozzles equipped with test ports
� Variety of Inlet & Outlet Configurations
APPLICATION
Silencer incorporates a passive system utilizing filters to
burn the particulates at normal Diesel exhaust temperatures.
CONSTRUCTION
Silencer features easy access panel(s) allowing quick
installation and removal of the Diesel particulate filters.
Standard with 125/150# ANSI flanged connections. Engine
flanges may be substituted when applicable.
Typical attenuation : 501DF-4100 : 22 to 29 dB’A’
Available in Stainless Steel. Consult factory for additional
material options.
Max
Elements
501DF-1-4100 1 Filter Series
For Diesel Particulate Filter Silencers
Outlet
Dia
Hgt
B
Width
W
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Out
Representative Attenuation Curve for
501DF-4100 Catalytic Silencer
OCTAVE BAND
402-323-7272 Toll Free 1-800-775-2466 Fax 402-323-7270
Email gtexhaust@gtexhaustsystems.com 106 Technical Assistance 903-758-3624 or 402-323-7298
Insertion Loss in Decibels
(Ref 0.0002 Microbars)
Max
Elements
30
25
20
15
10
5
0
63 Hz 125
Hz
250
Hz
500
Hz
1000
Hz
2000
Hz
Center Frequency Hz
501DF-2-4100 2 Filter Series
For Diesel Particulate Filter Silencers
Outlet
Dia
Hgt
B
Width
W
OAL 1
End
Inlet
OAL 2
Side
Inlet
4000
Hz
8000
Hz
OAL 3
Side
Inlet/Outlet
2 8 25 62 70 65 60
1 6 25 46 70 65 60 2 10 25 66 82 77 72
1 8 25 48 70 65 60 2 12 25 66 82 77 72
1 10 25 50 82 77 72 2 14 25 66 94 89 84
1 12 25 50 82 77 72 2 16 25 70 94 89 84
Max
Elements
501DF-3-4100 3 Filter Series
For Diesel Particulate Filter Silencers
Outlet
Dia
Hgt
B
Width
W
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Out
Max
Elements
501DF-4-4100 4 Filter Series
For Diesel Particulate Filter Silencers
Outlet
Dia
Hgt
B
Width
W
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Outlet
4 12 25 88 94 89 84
3 10 25 66 82 77 72 4 14 25 88 94 89 84
3 12 25 66 82 77 72 4 16 25 88 106 101 96
3 14 25 66 94 89 84 4 18 25 88 106 101 96
3 16 25 70 94 89 84 4 20 26 88 106 101 96
3 18 25 80 94 89 84 4 22 26 88 106 101 96
3 20 26 84 106 101 96 4 24 28 88 118 113 108
Max
Elements
501DF-5-4100 5 Filter Series
For Diesel Particulate Filter Silencers
Outlet
Dia
Hgt
B
Width
W
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Out
Max
Elements
501DF-6-4100 6 Filter Series
For Diesel Particulate Filter Silencers
Outlet
Dia
Hgt
B
Width
W
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Outlet
5 14 41 80 94 89 84 6 16 41 88 106 101 96
5 16 41 80 106 101 96 6 18 41 93 106 101 96
5 18 41 80 106 101 96 6 20 41 93 106 101 96
5 20 41 84 106 101 96 6 22 41 93 106 101 96
5 22 41 84 106 101 96 6 24 41 93 118 113 108
5 24 41 88 118 113 108 6 26 41 93 118 113 108
5 26 41 92 118 113 108 6 28 41 93 130 125 120
A 20” minimum clearance is required for removal of the elements through the access opening(s) on the converter silencer. However due to the
size and weight of the particulate filter, GT Exhaust recommends a clearance of 26” or more.
18

501DF- 5100 Series GT Exhaust Systems, Inc.
Diesel Particulate Filter Silencers Lincoln, Nebraska
� Easy access allows quick installation / removal of filters
� Inlet and Outlet Nozzles equipped with test ports
� Packed thermal shell reduces heat loss
� Variety of Inlet & Outlet Configurations
APPLICATION
Silencer incorporates a passive system utilizing filters to burn the
particulates at normal Diesel exhaust temperatures.
CONSTRUCTION
All welded heavy duty steel. Special internal design incorporates
high density acoustical insulation inserted between the shells.
Insulation is isolated from the exhaust chambers eliminating possible
contamination, and retains the exhaust gas heat within the silencer
for optimum catalytic performance.
Silencer features easy access panel(s) allowing quick installation and
removal of the Diesel particulate filters. Standard with 125/150#
ANSI flanged connections. Engine flanges may be substituted when
applicable.
Typical attenuation : 501DF-5100 : 27 to 35 dB’A’
Available in Stainless Steel. Consult factory for additional material
options.
Max
Elements
501DF-1-5100 1 Filter Series
For Diesel Particulate Filter Silencers
Outlet
Dia
Hgt
B
Width
W
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Out
Representative Attenuation Curve for
501DF-5100 Catalytic Silencer
OCTAVE BAND
402-323-7272 Toll Free 1-800-775-2466 Fax 402-323-7270
Email gtexhaust@gtexhaustsystems.com 106 Technical Assistance 903-758-3624 or 402-323-7298
Insertion Loss in Decibels
(Ref 0.0002 Microbars)
Max
Elements
50
45
40
35
30
25
20
15
10
5
0
63 Hz 125
Hz
250
Hz
500
Hz
1000
Hz
2000
Hz
Center Frequency Hz
501DF-2-5100 2 Filter Series
For Diesel Particulate Filter Silencers
Outlet
Dia
Hgt
B
Width
W
OAL 1
End
Inlet
OAL 2
Side
Inlet
4000
Hz
8000
Hz
OAL 3
Side
Inlet/Outlet
2 8 27 60 82 77 72
1 6 27 48 76 71 66 2 10 27 60 82 77 72
1 8 27 48 82 77 72 2 12 27 62 94 89 84
1 10 27 52 82 77 72 2 14 27 65 94 89 84
1 12 27 62 94 89 84 2 16 27 74 106 101 96
Max
Elements
501DF-3-5100 3 Filter Series
For Diesel Particulate Filter Silencers
Outlet
Dia
Hgt
B
Width
W
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Out
Max
Elements
501DF-4-5100 4 Filter Series
For Diesel Particulate Filter Silencers
Outlet
Dia
Hgt
B
Width
W
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Outlet
4 12 27 90 94 89 84
3 10 27 70 82 77 72 4 14 27 90 94 89 84
3 12 27 70 94 89 84 4 16 27 90 106 101 96
3 14 27 70 94 89 84 4 18 27 90 118 113 108
3 16 27 74 106 101 96 4 20 28 90 118 113 108
3 18 27 84 118 113 108 4 22 30 92 130 125 120
3 20 28 88 118 113 108 4 24 32 92 130 125 120
Max
Elements
501DF-5-5100 5 Filter Series
For Diesel Particulate Filter Silencers
Outlet
Dia
Hgt
B
Width
W
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Out
Max
Elements
501DF-6-5100 6 Filter Series
For Diesel Particulate Filter Silencers
Outlet
Dia
Hgt
B
Width
W
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Outlet
5 14 45 82 94 89 84 6 16 45 97 106 101 96
5 16 45 82 106 101 96 6 18 45 97 118 113 108
5 18 45 84 118 113 108 6 20 45 97 118 113 108
5 20 45 86 118 113 108 6 22 45 97 130 125 120
5 22 45 88 130 125 120 6 24 45 97 130 125 120
5 24 45 92 130 125 120 6 26 45 97 130 125 120
5 26 45 96 130 125 120 6 28 45 97 142 137 132
A 20” minimum clearance is required for removal of the elements through the access opening(s) on the converter silencer. However due to the
size and weight of the particulate filter, GT Exhaust recommends a clearance of 26” or more.
20

501DF- 6100 Series GT Exhaust Systems, Inc.
Diesel Particulate Filter Silencers Lincoln, Nebraska
� Easy access allows quick installation / removal of filters
� Inlet and Outlet Nozzles equipped with test ports
� Packed thermal shell reduces heat loss
� Variety of Inlet & Outlet Configurations
APPLICATION
Silencer incorporates a passive system utilizing filters to burn the
particulates at normal Diesel exhaust temperatures.
CONSTRUCTION
All welded heavy duty steel. Special internal design incorporates
high density acoustical insulation inserted between the shells.
Insulation is isolated from the exhaust chambers eliminating possible
contamination, and retains the exhaust gas heat within the silencer
for optimum catalytic performance.
Silencer features easy access panel(s) allowing quick installation and
removal of the Diesel particulate filters. Standard with 125/150#
ANSI flanged connections. Engine flanges may be substituted when
applicable.
Typical attenuation : 501DF-6100 : 30 to 38 dB’A’
Available in Stainless Steel. Consult factory for additional material
options.
Max
Elements
501DF-1-6100 1 Filter Series
For Diesel Particulate Filter Silencers
Outlet
Dia
Hgt
B
Width
W
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Out
Representative Attenuation Curve for
501DF-6100 Catalytic Silencer
OCTAVE BAND
402-323-7272 Toll Free 1-800-775-2466 Fax 402-323-7270
Email gtexhaust@gtexhaustsystems.com 106 Technical Assistance 903-758-3624 or 402-323-7298
Insertion Loss in Decibels
(Ref 0.0002 Microbars)
50
45
40
35
30
25
20
15
10
5
0
Max
Elements
63 Hz 125
Hz
250
Hz
500
Hz
1000
Hz
2000
Hz
Center Frequency Hz
4000
Hz
501DF-2-6100 2 Filter Series
For Diesel Particulate Filter Silencers
Outlet
Dia
Hgt
B
Width
W
OAL 1
End
Inlet
OAL 2
Side
Inlet
8000
Hz
OAL 3
Side
Inlet/Outlet
2 8 27 64 106 101 96
1 6 27 56 94 89 84 2 10 27 64 118 113 108
1 8 27 60 106 101 96 2 12 27 70 118 113 108
1 10 27 64 118 113 108 2 14 27 70 130 125 120
1 12 27 70 118 113 108 2 16 28 76 142 137 132
Max
Elements
501DF-3-6100 3 Filter Series
For Diesel Particulate Filter Silencers
Outlet
Dia
Hgt
B
Width
W
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Out
Max
Elements
501DF-4-6100 4 Filter Series
For Diesel Particulate Filter Silencers
Outlet
Dia
Hgt
B
Width
W
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Outlet
4 12 27 90 118 113 108
3 10 27 70 118 113 108 4 14 27 90 130 125 120
3 12 27 70 118 113 108 4 16 28 90 142 137 132
3 14 27 70 130 125 120 4 18 30 90 142 137 132
3 16 27 76 142 137 132 4 20 34 90 142 137 132
3 18 30 86 142 137 132 4 22 36 92 154 149 144
3 20 34 90 142 137 132 4 24 38 92 166 161 156
Max
Elements
501DF-5-6100 5 Filter Series
For Diesel Particulate Filter Silencers
Outlet
Dia
Hgt
B
Width
W
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Out
Max
Elements
501DF-6-6100 6 Filter Series
For Diesel Particulate Filter Silencers
Outlet
Dia
Hgt
B
Width
W
OAL 1
End
Inlet
OAL 2
Side
Inlet
OAL 3
Side
Inlet/Outlet
5 14 45 82 130 125 120 6 16 45 97 142 137 132
5 16 45 82 142 137 132 6 18 45 97 142 137 132
5 18 45 84 142 137 132 6 20 45 97 142 137 132
5 20 45 86 142 137 132 6 22 45 97 154 149 144
5 22 45 88 154 149 144 6 24 45 97 166 161 156
5 24 45 92 166 161 156 6 26 45 97 178 173 168
5 26 45 96 178 173 168 6 28 45 97 178 173 168
A 20” minimum clearance is required for removal of the elements through the access opening(s) on the converter silencer. However due to the
size and weight of the particulate filter, GT Exhaust recommends a clearance of 26” or more.
22

GT Exhaust Systems, Inc.
Accessories Lincoln, Nebraska
Catalytic Replacement Elements & Filters
Panel Elements Diesel Particulate Filters
Panel Elements
Replacement Gaskets
Part No Type
CE-7140 Oxidation Full Panel
CE-7141 Oxidation Half Panel
CE-1136 Three Way Full Panel
CE-1241 Three Way Half Panel
Round Elements
Round Elements
Diesel Particulate Filters
Part No Size
DF-1000 10.5 Dia x 12 Lg
DF-1114 11.25 Dia x 14 Lg
DF-1500 15.78 Dia x 15.38 Lg
Part No Dia Type Part No Dia Type
RO-6 6 Oxidation R3-6 6 Three Way
RO-8 8 Oxidation R3-8 8 Three Way
RO-10 10 Oxidation R3-10 10 Three Way
RO-12 12 Oxidation R3-12 12 Three Way
RO-14 14 Oxidation R3-14 14 Three Way
RO-16 16 Oxidation R3-16 16 Three Way
Panel Gaskets
Panel Gaskets
Lid Gaskets
Part No For
PG-1512 Half Panel Oxidation or Three Way
PG-1524 Full Panel Oxidation or Three Way
Lid Gaskets
Part No For
LG-XXX All Lids - XXX = perimeter length, inches
LG-ROLL All Lids - Full roll, 100 feet
402-323-7272 Toll Free 1-800-775-2466 Fax 402-323-7270
Email gtexhaust@gtexhaustsystems.com 106 Technical Assistance 903-758-3624 or 402-323-7298
24

GT Exhaust Systems, Inc.
Terms of Sales Lincoln, Nebraska
Terms of Sales for Catalytic Silencers
All terms of sales are subject to credit approval by GT Exhaust Systems, Inc. Actual terms may vary depending on
specific conditions and customer’s credit report.
Three Way and Oxidation Catalytic Silencers
� Net 30 for most orders on approval of credit. Large orders may require a deposit at time order is
placed. Consult factory for specific details.
402-323-7272 Toll Free 1-800-775-2466 Fax 402-323-7270
Email gtexhaust@gtexhaustsystems.com
106 Technical Assistance 903-758-3624 or 402-323-7298 25

GT Exhaust Systems, Inc.
Specification Sheet Lincoln, Nebraska
OXIDATION AND 3-WAY CATALYTIC CONVERTER-SILENCER SPECIFICATION
The Catalytic Converter Silencer shall be a model ____ V__ - __ - _ _ _ - _1_ _ as manufactured by GT Exhaust Systems, Inc.
When inserted in the exhaust system of a _______________ model ___________ operating at _________ bhp/ekW @
_______ rpm, with an exhaust flow rate of ___________ (value & units) @ ______°F, and having the following exhaust emissions:
� NOx ______________ (value & units), CO ______________ (value & units), NMNEHC _____________
(value & units), HCHO ______________ (value & units).
� With an O2 concentration of _____ %, the converter-silencer shall be guaranteed to reduce and/or oxidize the emissions to no
more than:
� NOx ______________ (value & units), CO ______________ (value & units), NMNEHC ______________
(value & units), HCHO ______________ (value & units)
The catalyst shall be provided in modular rectangular elements in full size and half size. The silencer body shall have a maximum capacity of
____ modular rectangular elements arranged to provide parallel flow paths, and shall ship with _______ full size elements and
_______ half size elements. Remaining slots shall be fitted with blank elements which may be removed and replaced with active elements
should future reduction requirements change. Each full size element shall be 15.454” X 24.75” X 3.7”; each half size element shall be 15.454” X
12.375” X 3.7”. A minimum net volume of catalyst elements shall provide a calculated space velocity of no more than _____________
hr -1 , based a scfh flow rate corrected to 14.7psia and 32°F.
Modular Catalyst elements shall be accessed through a removable cover plate, sealed by a face gasket applied to the element frame and
secured in place by a release mechanism. Individual elements shall not exceed a weight of 40 lb and be easily handled by one person without
the need for any lifting devices or special tools.
With the specified amount of catalyst installed, and for the stated engine exhaust gas operating conditions, the pressure drop restriction shall not
exceed______ inches H2O. Installation of additional active elements shall cause the pressure drop to be less than that of the “as shipped”
arrangement.
The Catalytic Silencer body shall be constructed of _________ steel, and shall provide _____-_____ dB-A noise reduction. The
outlet shall be located on the _________ of the body and shall terminate with a _____ inch plate flange to match an ANSI 125/150#
pattern. The inlet(s) shall number _______, and be located on the ____________ of the body and shall terminate with a _____
inch plate flange(s) to match an ANSI 125/150# pattern.
3-Way Catalyst elements shall have the P.M. applied to a wash coat for surface area magnification. The substrate shall be stainless steel foil
embossed with a herringbone pattern and folded to provide framed modular elements or half size elements as specified above. The herringbone
pattern shall, when folded and assembled into a rectangular channel frame provide 320 cells per square inch (CPSI).
Oxidation Catalyst elements shall have the P.M. applied to a wash coat for surface area magnification. The substrate shall be stainless steel foil
embossed with a herringbone pattern and folded to provide framed modular elements or half size elements as specified above. The herringbone
pattern shall, when folded and assembled into a rectangular channel frame provide 150 cells per square inch (CPSI).
Phone 402-323-7272 Fax 402-323-7270 Engr Fax 402-323-7271
Email: GTExhaust@gtexhaustsystems.com Web: http://www.gtexhaust.com
Technical Assistance: 903-758-3624 or 402-323-7298
26