8481.90.90.40—Taps, cocks, valves and similar appliances, for pipes, boiler shells, tanks, vats or the like, including pressure-reducing valves and thermostatically controlled valves; parts thereof, parts, otherGeneral
Free
Units
kg
Column 2
35%
Special
—
HTS 8481.90.90.40 is the U.S. Harmonized Tariff Schedule classification for Taps, cocks, valves and similar appliances, for pipes, boiler shells, tanks, vats or the like, including pressure-reducing valves and thermostatically controlled valves; parts thereof, parts, other. It's a 10-digit statistical line in Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof, Section XVI: Machinery and Mechanical Appliances; Electrical Equipment; Parts Thereof; Sound Recorders and Reproducers, Television Image and Sound Recorders and Reproducers, and Parts and Accessories of Such Articles, used by U.S. Customs and Border Protection to determine the duty rate at entry. 8 Chapter 99 tariff modifications currently stack on top of the base rate.
New to HTS codes? Read our guide on how HTS classification works →
Chapter 99 overlays that stack on the base rate
| Code | Authority | Rate |
|---|---|---|
| 9903.88.01 | section_301 | The duty provided in the applicable subheading plus 25% |
| 9903.88.05 | section_301 | The duty provided in the applicable subheading |
| 9903.88.07 | section_301 | The duty provided in the applicable subheading |
| 9903.88.08 | section_301 | The duty provided in the applicable subheading |
| 9903.88.11 | section_301 | The duty provided in the applicable subheading |
| 9903.88.14 | section_301 | The duty provided in the applicable subheading |
| 9903.88.15 | section_301 | The duty provided in the applicable subheading + 7.5% |
| 9903.88.69 | section_301 | The duty provided in the applicable subheading |
Past CBP decisions classifying real products under this HTS code. Useful precedent when classifying a similar product — each ruling shows how CBP interpreted the code for a specific case.
The tariff classification of separating plates from South Korea
The tariff classification of separating plates from South Korea
The tariff classification of a hydraulic control module and threaded caps from Japan
The tariff classification of manifold end covers from China
The tariff classification of various parts of a pneumatic transducer from China
Source: CBP CROSS (view all rulings on rulings.cbp.gov →)
HTS 8481.90.90.40 is the U.S. Harmonized Tariff Schedule classification for Taps, cocks, valves and similar appliances, for pipes, boiler shells, tanks, vats or the like, including pressure-reducing valves and thermostatically controlled valves; parts thereof, parts, other. It belongs to Chapter 84 of the HTSUS.
The general (Column 1) duty rate for HTS 8481.90.90.40 is Free. This is the most-favored-nation (MFN) rate that applies to imports from World Trade Organization member countries.
The Column 2 rate for HTS 8481.90.90.40 is 35%. This rate applies to imports from countries that do not have normal trade relations with the United States (currently Cuba and North Korea).
Yes — HTS 8481.90.90.40 is covered by section_301 provision 9903.88.01 (The duty provided in the applicable subheading plus 25%). 7 additional overlays also touch this code. Open the code page for the full overlay stack with effective dates and country scopes.
No active AD/CVD orders currently flag HTS 8481.90.90.40 in Tandom's catalog. Tandom monitors Federal Register notices daily; a flag will appear here within 24h of any new order's publication.
Tandom guides relevant to this code
What the 178 active Section 301 exclusions cover, how to claim 9903.88.69 on an entry, and what changes when the November 10, 2026 deadline passes.
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How to read, order, and report Chapter 99 HTS codes alongside the base classification on a US entry summary in 2026. The full stacking ladder for brokers and compliance teams.
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A working guide to the inputs, the layers, and the math behind a US entry summary in 2026. Written for brokers, forwarders, and importer compliance teams.
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Where trade compliance APIs fit in a broker's filing pipeline: HTS classification, duty calculation, AD/CVD scope match, and post-summary corrections.
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