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SITCSection 7
U.S. imports of filters and purifying machinery for gases, not elsewhere specified (SITC 74369) totaled $501.1M in April 2026, traded with 77 countries.
Importers of Filters and Purifying Machinery for Gases, Not Elsewhere Specified paid $25.5M in duties in April 2026 — an effective duty rate of 12% on $210.9M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataGas filtration and purification equipment not dedicated to engine intake air — including industrial dust collectors, HEPA filtration systems, activated-carbon gas scrubbers, compressed-air dryers, and process gas purifiers — serves environmental compliance, clean-room manufacturing, chemical processing, and industrial hygiene applications. The NES scope means intake air filters for internal combustion engines are explicitly excluded. Importers of gas filtration equipment from China should assess Section 301 tariff exposure, which varies by the specific HTS subheading applicable to the equipment.
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Yes — dust collectors, baghouse filters, and similar equipment designed to remove particulates from industrial gas or air streams (outside of engine intake applications) fall within the NES gas filtration heading. Classification is based on the equipment's function of filtering or purifying a gas stream in an industrial or process context, not on the specific filter media used.
Compressed-air dryers that remove moisture or contaminants from compressed air streams are generally classified as gas purification apparatus under this heading. However, if the dryer operates by refrigeration or desiccant adsorption and is more accurately described as a refrigerating or drying machine, it may fall under a different machinery heading. The principal function and design of the specific unit should be reviewed with a licensed customs broker before entry.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | $188.6M | $70.6M | -$117.9M |
| CANADA | $82.0M | $80.5M | -$1.6M |
| GERMANY | $39.3M | $15.8M | -$23.5M |
| KOREA, SOUTH | $39.6M | $5.3M | -$34.3M |
| CHINA | $25.8M | $10.2M | -$15.6M |
Monthly import values over time