HTS heading 8421
Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof — 29 codes under this heading, with the duty on each.
| Code | Description | General rate | Units |
|---|---|---|---|
| 8421 | Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof + Ch. 99 | not stated | — |
| 8421.11.00.00 | Cream separators + Ch. 99 | Free | No. |
| 8421.12.00.00 | Clothes-dryers + Ch. 99 | Free | No. |
| 8421.19.00.00 | Other + Ch. 99 | 1.3% | No. |
| 8421.21.00.00 | For filtering or purifying water + Ch. 99 | Free | No. |
| 8421.22.00.00 | For filtering or purifying beverages other than water + Ch. 99 | Free | No. |
| 8421.23.00.00 | Oil or fuel filters for internal combustion engines + Ch. 99 | 2.5% | No. |
| 8421.29.00 | Other + Ch. 99 | Free | — |
| 8421.29.00.05 | Refrigerant recovery and recycling units + Ch. 99 | Free (inherited from 8421.29.00) | No. |
| 8421.29.00.15 | Oil-separation equipment + Ch. 99 | Free (inherited from 8421.29.00) | No. |
| 8421.29.00.40 | Hydraulic fluid power filters, rated at 1,000 kPa or greater + Ch. 99 | Free (inherited from 8421.29.00) | No. |
| 8421.29.00.65 | Other + Ch. 99 | Free (inherited from 8421.29.00) | No. |
| 8421.31.00.00 | Intake air filters for internal combustion engines + Ch. 99 | 2.5% | No. |
| 8421.32.00.00 | Catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion engines + Ch. 99 | Free | No. |
| 8421.39.01 | Other + Ch. 99 | Free | — |
| 8421.39.01.05 | For machine tools of headings 8456 through 8465, inclusive + Ch. 99 | Free (inherited from 8421.39.01) | kg |
| 8421.39.01.15 | Other + Ch. 99 | Free (inherited from 8421.39.01) | kg |
| 8421.39.01.20 | Electrostatic precipitators + Ch. 99 | Free (inherited from 8421.39.01) | No. |
| 8421.39.01.30 | Other + Ch. 99 | Free (inherited from 8421.39.01) | No. |
| 8421.39.01.40 | Gas separation equipment + Ch. 99 | Free (inherited from 8421.39.01) | No. |
| 8421.39.01.60 | Pneumatic fluid power filters, rated at 550 kPa or greater + Ch. 99 | Free (inherited from 8421.39.01) | No. |
| 8421.39.01.90 | Other + Ch. 99 | Free (inherited from 8421.39.01) | kg |
| 8421.91 | Of centrifuges, including centrifugal dryers + Ch. 99 | not stated | — |
| 8421.91.20.00 | Drying chambers for the clothes-dryers of subheading 8421.12 and other parts of clothes-dryers incorporating drying chambers + Ch. 99 | Free | No. |
| 8421.91.40.00 | Furniture designed to receive the clothes-dryers of subheading 8421.12 + Ch. 99 | Free | No. |
| 8421.91.60.00 | Other + Ch. 99 | Free | kg |
| 8421.99.01 | Other + Ch. 99 | Free | — |
| 8421.99.01.40 | Parts of machinery and apparatus for filtering or purifying water + Ch. 99 | Free (inherited from 8421.99.01) | kg |
| 8421.99.01.80 | Other + Ch. 99 | Free (inherited from 8421.99.01) | kg |
13 of these lines state no rate of their own and inherit one from the line above, which is how the schedule is read. Each says which line it came from.
Additional duties may apply
29 lines here reference Chapter 99, where Section 301, Section 232 and other additional duties live. Those are charged on top of the general rate and depend on where the goods were made. What those provisions are.
Source: Harmonized Tariff Schedule of the United States, U.S. International Trade Commission (public domain). Classification and the duties that finally apply to a shipment are a licensed customs broker's call.