HS Code 848180: 4 US Lines, 2% to 5.6%, All at 25% 301

Last updated October 29, 2026·Data as-of: HTS 2026-10-19 / Section 301 2026-10-16 / AD-CVD 2026-10-16

What HS code 848180 covers

8481.80 is the residual of the valve heading: taps, cocks, valves and similar appliances not covered by the pressure-reducing, check or safety subheadings. The heading is dominated by material and by end use, which is why the four codes are short to state and hard to choose between in practice.^*

The heading is a basket in the technical sense: the six digits fix the product family, and every distinction your invoice needs lives to the right of them. In our US schedule snapshot, 848180 expands to 39 formatted lines that collapse to 4 distinct eight-digit codes — the 4 codes are what a broker will ask you to choose between, and the extra digits distinguish units, uses and statutory notes.

How the heading splits: 4 eight-digit codes

The table lists every eight-digit code under the heading with its published general rate and, where one applies, the Section 301 action heading and rate that stacks on top. Reading the two rate columns together is the difference between a duty estimate and a guess.

The last column folds the Section 301 action and the stacked rate into one cell so the table stays readable on a phone.

Source: Recomputed from data/hts.json joined to data/section301_origin.json — https://hts.usitc.gov/reststop/exportList?from=0100&to=9999&format=JSON&styles=false (fetched 2026-10-19).

Only four eight-digit codes carry all 39 formatted lines, and the split to the right of them is by material (copper, steel, other) and by application (bath and shower, sink and lavatory, supply stops, gate and globe types). Ten-digit suffixes rarely change the rate; they change whether the entry matches the drawing on your invoice.

The duty spread: 2% to 5.6%^*

Across the 4 eight-digit codes, 0 carry a Free general rate and 39 carry an ad valorem rate between 2% and 5.6% (median 4%). 0 lines are charged on a specific or compound basis — cents per kilogram, or a compound rate — and those are the ones a percentage calculator silently gets wrong.^*

The general rate band is the narrowest in this family — 2% to 5.6%, median 4% — and 0 of the 4 codes are Free. On a heading this tight, arguing about which code applies moves duty by a few points at most.^*

Source: Rate buckets recomputed from data/hts.json records under the heading — https://hts.usitc.gov/reststop/exportList?from=0100&to=9999&format=JSON&styles=false (fetched 2026-10-19).

Section 301 overlay: 4 of 4 eight-digit codes (100.0%)^*

That is why the 301 line matters more here than anywhere else in the family: all 4 codes are enumerated at 25%, so the effective rate is the general rate plus 25% regardless of how the material argument is resolved.^*

Source: Per-code Section 301 enumeration extracted into data/section301_origin.json — https://hts.usitc.gov/reststop/file?release=currentRelease&filename=Chapter%2099 (fetched 2026-10-16).

Nationally the same programme covers 91.5% of the 11,414 eight-digit lines in our snapshot; the heading you are reading sits above that average, which is worth knowing before you assume a sourcing switch will save duty.^*

Anti-dumping and countervailing exposure

No case number in our Federal Register table lists 848180, so the anti-dumping layer is absent for valves in this extraction — unlike the steel lines that feed them.

Six-digit codes in our Federal Register case table: 0 case numbers list 848180 as a candidate code — none. That is a statement about our extraction, not a clearance: absence from the table means no case in the 2,756 lifecycle records we parsed, and a case published after the extraction date would not appear.

Classification disputes: 5 CBP rulings touch this heading

Five rulings in our CROSS sample start from 8481.80, including replacement-part and hand-operated valve questions — the recurring issue is whether the article is a valve or a part of the machine it serves.^*

Source: Sampled from data/cross_rulings_full.json where hs8_prefixes start with this heading — https://rulings.cbp.gov/api/ (fetched 2026-10-29).

Rulings are the closest thing to a precedent system US classification has: a published ruling on a comparable article is the strongest support available for the line you declare, and it costs nothing to cite one on your entry file.

Valve or machine part: the question behind the code

The most expensive misclassification on this heading is not which valve code to use but whether the article is a valve at all: a valve shipped as a component of a machine can classify with the machine under Section XVI notes, and that move usually removes both the 25% addition and the valve rate. Neither 8481.80.99 nor 8481.80.97 exists in the US snapshot.^*

How to read the rate column on this heading

What this page does not measure

What to check next

For valves, decide the legal question first — valve or machine part — then pick the material code, then confirm the 301 heading on the chosen line.

Three checks settle most of the cost before you speak to anyone: run the code and origin through the landed-cost calculator, confirm the eight-digit line against the HTS browser, and check the code-and-country pair in the AD/CVD case table. The raw files behind all three are published under datasets.