An EU/EPA approved diesel air compressor is a type of air compressor that is powered by a portable air compressor diesel engine and has been certified to meet the stringent emission standards set by the European Union (EU) and the United States Environmental Protection Agency (EPA).
[pdf] An internal diesel motor powers these portable compressors and they work in a similar way to electric compressors. The air inside the chamber of the tank is pressurized either by rotating impellers or by collapsing the air containment chamber, which will force the air to compress in a smaller space.
[pdf] This test is performed to ensure that there are no leaks in the piping, compressor, or other pressure containing parts of the package. All openings in the completed compressor package are plugged and the unit is pressurized with nitrogen to 350 psig.
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