# United States tariff lines under HS 8481.30

> The United States tariff splits HS 8481.30 (check (nonreturn) valves) into 5 national lines: 8481.30.10.10 (having a pressure rating under 850 kPa), 8481.30.10.90 (having a pressure rating of 850 kPa or over), 8481.30.20.10 (of iron), 8481.30.20.90 (of steel) and 1 other. The general (MFN) duty differs by line: 3% on 8481.30.10.10, 3% on 8481.30.10.90, 5% on 8481.30.20.10, 5% on 8481.30.20.90 and 3% on 8481.30.90.00.

Source: https://border.bot/countries/united-states/hs-codes/848130
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 84](https://border.bot/countries/united-states/hs-codes/84) / [8481.30](https://border.bot/countries/united-states/hs-codes/848130)

## Key facts

- HS subheading: [8481.30](https://border.bot/hs-codes/848130)
- National lines: 5
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof

## United States lines under 8481.30

The United States tariff splits HS 8481.30 (check (nonreturn) valves) into 5 national lines: 8481.30.10.10 (having a pressure rating under 850 kPa), 8481.30.10.90 (having a pressure rating of 850 kPa or over), 8481.30.20.10 (of iron), 8481.30.20.90 (of steel) and 1 other.

The general (MFN) duty differs by line: 3% on 8481.30.10.10, 3% on 8481.30.10.90, 5% on 8481.30.20.10, 5% on 8481.30.20.90 and 3% on 8481.30.90.00.

- [8481.30.10.10](https://border.bot/countries/united-states/hs-codes/8481301010) Check (nonreturn) valves, Of copper, Having a pressure rating under 850 kPa. Duty (MFN): 3%
- [8481.30.10.90](https://border.bot/countries/united-states/hs-codes/8481301090) Check (nonreturn) valves, Of copper, Having a pressure rating of 850 kPa or over. Duty (MFN): 3%
- [8481.30.20.10](https://border.bot/countries/united-states/hs-codes/8481302010) Check (nonreturn) valves, Of iron or steel, Of iron. Duty (MFN): 5%
- [8481.30.20.90](https://border.bot/countries/united-states/hs-codes/8481302090) Check (nonreturn) valves, Of iron or steel, Of steel. Duty (MFN): 5%
- [8481.30.90.00](https://border.bot/countries/united-states/hs-codes/8481309000) Check (nonreturn) valves, Other. Duty (MFN): 3%

## In other countries

No other national tariff on border.bot has live lines under 8481.30 yet.

- [The Harmonized System text for 8481.30](https://border.bot/hs-codes/848130)

- Previous subheading: [8481.20](https://border.bot/countries/united-states/hs-codes/848120) 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
- Next subheading: [8481.40](https://border.bot/countries/united-states/hs-codes/848140) 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

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 8481.30?

The United States tariff splits HS 8481.30 (check (nonreturn) valves) into 5 national lines: 8481.30.10.10 (having a pressure rating under 850 kPa), 8481.30.10.90 (having a pressure rating of 850 kPa or over), 8481.30.20.10 (of iron), 8481.30.20.90 (of steel) and 1 other.

### What is the duty on HS 8481.30 in the United States?

The general (MFN) duty differs by line: 3% on 8481.30.10.10, 3% on 8481.30.10.90, 5% on 8481.30.20.10, 5% on 8481.30.20.90 and 3% on 8481.30.90.00.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/848130.json