8481.30—Check (nonreturn) valves
General duty rate
3% – 5%
Across 5 10-digit lines; pick a line below for the exact rate
Coverage on this page
Plain-English explanation
HTS 8481.30 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Check (nonreturn) valves. It sits 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 and rolls up 5 10-digit statistical lines, with general duty rates ranging from 3% to 5%. 4 Chapter 99 tariff modifications currently touch one or more lines under this subheading.
10-digit lines under 8481.30(5)
Pick a line to view full rate detail and compute landed duty
Tariff modifications(4)
Chapter 99 overlays touching one or more lines under 8481.30
| Code | Authority | Rate |
|---|---|---|
| 9903.88.01 | section_301 | The duty provided in the applicable subheading plus 25% |
| 9903.88.06 | section_301 | The duty provided in the applicable subheading |
| 9903.88.11 | section_301 | The duty provided in the applicable subheading |
| 9903.88.14 |
Frequently asked questions
What does HTS 8481.30 cover?
HTS 8481.30 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Check (nonreturn) valves. It belongs to Chapter 84 and rolls up 5 10-digit statistical lines that brokers actually file at entry.
What is the duty rate for HTS 8481.30?
General (Column 1) duty rates for the 10-digit lines under HTS 8481.30 range from 3% to 5%. The exact rate depends on the specific 10-digit statistical line — pick a line below to see its full rate detail.
How do I find the right 10-digit line under HTS 8481.30?
U.S. Customs requires entries to be filed at the 10-digit statistical level — the broader subheading HTS 8481.30 is not directly fileable. Match your product description to the most specific 10-digit line in the list on this page; if multiple lines could apply, the General Rules of Interpretation (GRIs) and chapter notes determine which one governs.
Are there AD/CVD orders affecting HTS 8481.30?
Learn more
Tandom guides relevant to this code
Section 301 China tariff exclusions in 2026
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 Chapter 99 tariff layers stack on a single entry
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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