Propane Exhaust Purifiers At Great Prices!
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    Propane Exhaust Purifiers

    Diesel Exhaust Purifier Scrubbers can be found here
    Gas 3-Way Catalytic Converters can be found here

    A propane engine does not burn “clean” emissions. Many of the emissions from a propane engine are the same as any other gasoline engine. Catalytic Exhaust Products Ltd. is a custom manufacturer of high performance propane exhaust purifiers to suit small and large engine applications. The propane exhaust purifiers are able to reduce harmful emissions of Carbon Monoxide (CO), Oxides of Nitrogen (NOx) and Hydrocarbons (HC) by up to 90%+. The propane exhaust purifier is great at reducing deadly indoor and outdoor emissions. Common applications for the propane exhaust purifier are lawn mower, commercial/garden, pressure washer, construction, industrial, generator, water pump, agricultural and forestry engine applications. Propane exhaust purifiers enable equipment operators to comply with a large variety of state and federal regulations such as with CARB, CAL OSHA, EPA, OSHA or RICE NESHAP. Designed for ease of installation and reliable operation, the propane purifiers are available in three basic configurations: plain style (P-Model), clamped style (F-Model) or as a full replacement purifier muffler.

    Comparison of Retrofitted Engines:



    233 PPM

    47800 PPM

    29000 PPM


    20 PPM

    50 PPM

    50 PPM


    261 PPM

    120 PPM

    170 PPM


    4 PPM

    2 PPM

    0 PPM


    5.2 % Vol

    6.2% Vol

    6.0% Vol


    1. Propane Exhaust Purifier Muffler:
      The propane purifier muffler is a "direct fit" replacement for your stock original equipment muffler. To install a propane purifier muffler remove the stock original equipment muffler and install the catalytic muffler directly in place. We will require your equipment make, model, machine serial number and the stock muffler part number when you place a purchase order. For additional information click here.


    2. Clamp-On Propane Exhaust Purifier (P-Model or F-Model):
      The P-Model (plain style) clamp-on style propane exhaust purifier is a fully welded purifier unit designed to be installed in line in the engine exhaust system before or after the original equipment muffler. The F-Model (clamped style) purifiers are similar to the plain style exhaust purifiers in which they are an inline add-on unit that can be attached to any engine. The clamped style model incorporates quick release V-band clamps with gaskets to allow easy removal of the catalytic core. Normally we recommend that you install the P-Model or F-Model purifier scrubber as close to the engine exhaust manifold outlet or turbocharger outlet as possible. The clamp-on style propane exhaust purifier requires exhaust heat energy to function properly therefore the closer you are to the engine exhaust manifold outlet or turbocharger outlet the better the diesel exhaust purifier scrubber will perform. We will require your exhaust pipe outside diameter (O.D.) when you place a purchase order. All of our clamp-on style propane exhaust purifiers are in stock and can be shipped out same day.

    The Major Catalytic Oxidation Reactions which Occur are:

    Propane Exhaust Purifier
    Carbon Monoxide (CO):
    CO + O2 CO2

    Hydrocarbons (HC):
    H2 + O2 H2O
    HC + O2 CO2 + H2O


      Our propane exhaust purifiers feature a high quality Platinum-Rhodium coating which is very carefully distributed upon a uniform high porosity washcoat. The Platinum-Rhodium precious metal coating and washcoat are evenly dispersed onto a metallic alloy core. The net results are high efficiency catalytic reactions which lead to very low exhaust emissions. Pollutant conversion efficiencies in excess of 90%+ can be expected when used in conjunction with recommended air/fuel ratio controllers.


      Our propane exhaust purifiers are constructed of high temperature tolerant, corrosion resistant stainless steel alloys. Thick stainless steel alloy retainers are used to provide support and stability for the inlet and outlet faces of the metallic core. The effects of high thermal shock and severe vibration are minimized. Larger catalytic converters models (Models 12 SXT and higher) feature inlet flow diverters for even exhaust flow distribution and improved operating efficiency.


      Our propane exhaust purifiers feature high strength, ultra-thin metallic core walls which impose a minimal exhaust gas restriction during operation. Even under high load/speed conditions the average engine operating efficiency is barely affected. Under normal circumstances the exhaust gas backpressure restriction will be in the order of 6.0” to 9.0” water gauge (depending on exhaust gas temperature).


      Our propane exhaust purifiers are designed for ease of installation and maintenance with minimal equipment downtime. A large variety of inlet/outlet cone termination configurations (NPT Male/Female pipe, ANSI Flanges, Tube O.D., etc.) are available.
    Call For a Quote:1-800-551-5525 or send an email request:
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    Toll free:1-800-551-5525


    Address:30 Intermodal Drive,
    Units 19-22, Brampton,
    Ontario, Canada L6T 5K1