Diesel and biodiesel engine exhaust gas contains many constituents that are considered harmful to humans. Our high quality diesel catalytic converters (diesel exhaust gas purifiers) are designed and specially formulated to remove or reduce the harmful components while keeping pressure drop to a minimum. Our standard units can provide over 90% reduction in carbon monoxide (CO) emissions, plus high reduction levels of unburned hydrocarbons (UHC), aldehydes (the odor causing component in diesel exhaust), as well as diesel particulate matter (DPM). Higher reduction levels are possible depending upon engine operating conditions and with custom configured units.
Our pre-engineered converters are available in various sizes and configurations. Converter housings are made of high grade 304 stainless steel. Inlet and outlet connections are available with flanged connections, as well as straight tube and slotted tube connections. The heart of the converter is our flow-through honeycomb substrate that is coated with a high surface area, poison resistant washcoat and a high activity, precious metal-based oxidation catalyst coating. While our standard units are manufactured with a stainless steel honeycomb substrate, we also offer ceramic honeycomb as an alternative.
The correct converter (purifier) size will vary depending upon many factors including engine size, exhaust temperature, allowable pressure drop, required emissions reductions and engine duty cycle. The table below notes some of our standard, single layer, units; however, custom designs are available upon request. All data is illustrative and subject to change without notice.
High Performance, Long Life Design Features
·Solid 304 SS construction
·Low pressure drop with metal honeycomb catalyst
·High resistance to mechanical shock due to rough handling and engine vibration
·High resistance to thermal shock during startup, shutdown and engine cycling
·Highest catalytic activity for reductions in CO, UHC's, soot & odors
·Suitable for a wide range of diesel & biodiesel fuels and dual fuel applications | 
Model DOC-W-14.5-1 |
MOBILE EQUIPMENT & SMALL FLOW UNITS
| ENGINE | ENGINE | UNIT | UNIT | UNIT | | CATALYST | DISPL. | DISPL. | CONNECTION | LENGTH | DIA. | | MODEL | CUBIC IN. | LITERS | INCHES | INCHES | INCHES | DOC-W-3-1
| < 150 | < 2.5 | 2 | 9 | 3 | DOC-W-4-1
| 150-250 | 2.5-4.1 | 2, 2.5, 3 | 11 | 4 | DOC-W-5-1
| 250-400 | 4.1-6.5 | 3, 3.5, 4 | 11 | 5 | DOC-W-6-1
| 400-600 | 6.5-9.8 | 3, 3.5, 4 | 13 | 6 | DOC-W-7-1
| 600-800 | 9.8-13.1 | 3, 3.5, 4 | 14.5 | 7 | DOC-W-8.5-1
| 800-1200 | 13.1-19.7 | 4, 5, 6 | 15 | 8.5 | | DOC-W-10-1 | 1200-1600 | 19.7-26.2 | 4, 5, 6 | 18 | 10 | | DOC-W-11.5-1 | 1600-2000 | 26.2-32.8 | 5, 6 | 19 | 11.5 | | DOC-W-14.5-1 | 2000-3100 | 32.8-50.8 | 5, 6 | 24 | 14.5 |
NOTES:
-Fully welded design with straight pipe inlet & outlet connections
-Other inlet & outlet connections available
-Sizing based on nominal 4 cycle, naturally aspirated engine at 2,100 RPM
-All dimensions subject to change without notice
-Custom sizes available
Medium Flow Unit Design Features
·Solid 304 SS construction
·Flanged inlet & outlet connections
·Removable catalyst layers for easy cleaning or replacement
·Suitable for single or dual catalyst layers
·Inlet and outlet ports for instrument connections
·Removable lid design for easy catalyst access | 
Model DOC-F-20-2 Dual Layer Unit |
Stationary Diesels & Medium Flow Units
| EXHAUST | EXHAUST | UNIT | UNIT | UNIT | | CATALYST | FLOW | FLOW | CONNECTION | LENGTH | DIAMETER | | MODEL | M3/MIN | FT3/MIN | INCHES | INCHES | INCHES | | DOC-F-20-1 | 140 | 4,950 | 8, 10 | 47 | 20 | | DOC-F-24-1 | 200 | 7,060 | 10, 12 | 51 | 24 | | DOC-F-28-1 | 260 | 9,200 | 10, 12 | 56 | 28 | | DOC-F-30-1 | 300 | 10,600 | 10, 12 | 59 | 30 | | DOC-F-32-1 | 340 | 12,000 | 12, 14 | 59 | 32 | | DOC-F-34-1 | 415 | 14,650 | 12, 14 | 64 | 34 |
NOTES:
-Removable catalyst element design with flanged inlet & outlet connections
-Suitable for single or dual catalyst layers
-Other inlet & outlet connections available
-Sizing based on nominal 770 deg. F exhaust temperature
-All dimensions subject to change without notice
-Custom sizes available
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