Filtering or purifying machinery and apparatus for gases: — Other
N359872 · 2026-04-01 — The tariff classification of a disposable CLIC absorber from Germany
Descriptive literature was provided for our review. The items under consideration are described as disposable CLIC absorbers, which are devices designed for use with Dräger anesthesia workstations and compatible respiratory therapy equipment. The absorbers are sealed plastic cartridges containing a carbon dioxide absorbent material (typically soda lime or equivalent chemical compound). During anesthesia or respiratory therapy, the patient’s exhaled gases pass through the absorber. The absorbent material chemically removes carbon dioxide from the gas mixture, allowing the remaining gases to be…
N355172 · 2025-11-13 — The tariff classification of filters from Italy
Descriptive literature was provided for our review. The first item under consideration is described as a CSD filtering cartridge (model CSD40000A10A), which is a filter designed to operate under medium pressure levels of up to 50 bar. The filters deliver optimal performance when used in hydrostatic drives, earthmoving machines, compressors, and converters. The filters are easily replaced through a quick, clean, and simple procedure. This characteristic is said to be particularly important in demanding work environments where conditions are highly deteriorated. CSD cartridges can handle flow…
N354046 · 2025-10-08 — The tariff classification of a maintenance kit
Descriptive literature was provided for our review. The item under consideration is described as a maintenance kit (model BH1398SP - 1000H) for the AVL MSS2 measurement device. The AVL MSS2 is a device that measures soot concentration from combustion sources, such as gasoline and diesel engines used in cars and trucks. The kit is packaged and sold as a single unit for maintenance purposes and includes multiple components sourced from various countries. The components are packaged together prior to importation and are not to be sold individually. The kit includes plastic O-rings (prevents…
N349421 · 2025-06-13 — The tariff classification of regenerative thermal oxidizer units from Canada
The items under consideration are described as Ventilation Air Methane Oxidation (VAMOX) systems, which are regenerative thermal oxidizer (RTO) units specifically engineered to reduce methane emissions from underground coal mines. The unit encompasses a full plant, which includes the RTO unit, a centrifugal fan, ventilation ducting, a control office, and a compressor room, all of which will be imported together. The VAMOX unit has a ceramic, fiber-lined, carbon steel outer skin. All internal parts of the system are accessible including the burner components that are reachable via a…
H334008 · 2025-02-14 — Request for Internal Advice; Classification of Ceramic Filters for Hot Gas Filtration
The following is our decision on a request for internal advice, which was filed on July 5, 2023, on behalf of Ceramic Filter Alliance, LLC (requestor). The request pertains to the classification under the Harmonized Tariff Schedule of the United States (HTSUS) by U.S. Customs and Border Protection (CBP) of certain ceramic filters for hot gas filtration. In reaching the determination below, CBP has considered information submitted with the request and provided following a virtual conference between the requestor and CBP held on March 5, 2024. Ceramic Filter Alliance, LLC, requested that…
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