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Overview of Tier III and Tier IV Diesel Emissions Standards

06 April, 18 4:23 pm · Leave a comment · reddarc
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Diesel Generator Rental Unit

Since 1996, the EPA’s regulations for non-road diesel engines emissions have been phased in through four progressively more stringent tiers. Different tiers went into effect at different dates for different engines, but since 2015, all new non-road diesel engines, including stationary engines, but comply with the EPA’s Tier IV (Final) standard.

Today’s Tier IV compliant diesel engines are far more complex, efficient, and expensive than their unregulated ancestors from the early 1990’s.

How does Tier 4 compare with the previous generation (Tier III)?

For Tier III, the standard focused on reducing NOx (nitrous oxides) and NMHC (all hydrocarbons except methane) emissions to levels on par with federal requirements for on-road diesel engines. Since these non-road emissions were unregulated prior to the Tier Emissions Standards, we have no basis for a hard comparison, but the EPA estimates that since 2010, Tier III has been reducing NOx emissions by about 1 million tons per year. This is the amount of NOx produced annually by about 35 million cars.

Conspicuously absent from Tier III was any limit on PM (particulate matter), although the Tier II limit still applied to Tier III motors.
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Red-D-Arc Company Overview Video

11 May, 17 9:13 am · Leave a comment · Colin Brown
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Red-D-Arc is recognized around the world as the welder rental specialist. We have been renting welding equipment for more than 60 years and our welding-equipment fleet is now more than six-times larger than our closest competitor. But did you know that Red-D-Arc is a leader in Weld Automation, Diesel Generator Rental, Induction Heating Systems, Pipe Welding Equipment, Blast Cleaning Equipment, Specialty Equipment, and Cutting Tables? Over the past 20 years we have been listening to our customers and continuously adding new products and services to meet their needs.

We produced a short video showcasing some of our many products and services. Enjoy!

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Airgas, an Air Liquide company, is the nation's leading single-source supplier of gases, welding and safety products. Known locally nationwide, our distribution network serves more than one million customers of all sizes with a broad offering of top-quality products and unmatched expertise.