# United States tariff lines under HS 8481.40

> The United States tariff splits HS 8481.40 (safety or relief valves) into 1 national line: 8481.40.00.00 (safety or relief valves). The general (MFN) duty is 2% on this line.

Source: https://border.bot/countries/united-states/hs-codes/848140
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) / [8481.40](https://border.bot/countries/united-states/hs-codes/848140)

## Key facts

- HS subheading: [8481.40](https://border.bot/hs-codes/848140)
- Duty (MFN): 2%
- National lines: 1
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof

## United States lines under 8481.40

The United States tariff splits HS 8481.40 (safety or relief valves) into 1 national line: 8481.40.00.00 (safety or relief valves).

The general (MFN) duty is 2% on this line.

- [8481.40.00.00](https://border.bot/countries/united-states/hs-codes/8481400000) Safety or relief valves. Duty (MFN): 2%

## In other countries

No other national tariff on border.bot has live lines under 8481.40 yet.

- [The Harmonized System text for 8481.40](https://border.bot/hs-codes/848140)

- Previous subheading: [8481.30](https://border.bot/countries/united-states/hs-codes/848130) Check (nonreturn) valves
- Next subheading: [8481.80](https://border.bot/countries/united-states/hs-codes/848180) Other appliances

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 8481.40?

The United States tariff splits HS 8481.40 (safety or relief valves) into 1 national line: 8481.40.00.00 (safety or relief valves).

### What is the duty on HS 8481.40 in the United States?

The general (MFN) duty is 2% on this line.

## 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/848140.json