The key classification factors are: (1) actuation method — hand-operated, check (non-return), or actuated; (2) the fluid or gas the valve is designed to control; (3) pressure rating and body material; and (4) whether the valve is a complete assembly or a part. These distinctions separate valves across multiple HTS subheadings in Chapter 84, each potentially carrying a different duty rate and trade remedy status.
Yes, antidumping orders have been issued on certain valve types — including cast iron pipe fittings and specific steel valve categories — from particular countries. Importers should verify current order coverage by checking the Commerce Department's active order list against the specific HTS subheading and country of origin for their product before finalizing sourcing decisions.
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NAICS industry 2 of 2 in industry group 3329 · 4 products
NAICS industry 33291 · $1.8B of $3.8B
Imports · August 2026
origin
China pays 37.0% duty; Mexico 2.0%.
customs district
Census does not publish district detail for this classification system.
destination
Census publishes state breakdowns for NAICS to the 4-digit level only. See NAICS 3329 for those.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$1.8BYoY · free account
Exports
$1.3BYoY · free account
Low of 8 reported months · imports
Low · free accountThrough August 2026 · imports 8 of 12 months reported, exports 8 of 12 months reported. Source: U.S. Census Bureau.