NAICS 332919

Overview

The North American Industry Classification System (NAICS) is the federal statistical standard for classifying business establishments to collect, analyze, and publish information about the U.S. economy. Developed under the Office of Management and Budget with the U.S. Economic Classification Policy Committee alongside Statistics Canada and Mexico’s national statistics agency, it replaced the Standard Industrial Classification (SIC) in 1997 to improve comparability across North America. ¹

NAICS 332919 defines “Other Metal Valve and Pipe Fitting Manufacturing.” Under the 2022 NAICS vintage, it covers establishments primarily engaged in manufacturing metal valves excluding industrial valves, fluid power valves and hose fittings, and plumbing fixture fittings and trim; illustrative examples include aerosol valves, firefighting nozzles, lawn hose nozzles, and lawn sprinklers. NAICS vintages are updated on a five-year cycle; Census programs are transitioning to 2022 NAICS across releases through 2027. ²

• See also on G2X:
  • G2X — NAICS 332919 overview
  • G2X — NAICS 332911
  • G2X — NAICS 332913

What this NAICS covers

• Metal valves not classified as industrial, fluid power, or plumbing fixture fittings and trim. ²
• Metal aerosol and dispensing valves. ²
• Firefighting and fire hose nozzles (metal). ²
• Lawn and garden hose nozzles (metal). ²
• Lawn and turf sprinklers (metal). ²
• Metal pipe system fittings such as couplings, unions, and flanges, except cast-iron couplings. ²

Related NAICS and PSC codes

Inclusions and exclusions (per NAICS)

• Included: Metal aerosol valves; firefighting nozzles; lawn hose nozzles; lawn sprinklers; metal pipe system fittings other than cast-iron couplings. ²
• Excluded to 332911: Industrial-type valves and valves for water works and municipal water systems. ²
• Excluded to 332912: Fluid power valves and hose fittings. ²
• Excluded to 332913: Plumbing fixture fittings and trim (e.g., faucets, flush valves, showerheads). ²
• Excluded to 33151: Cast-iron pipe fittings and couplings without machining. ²
• Excluded to 32612: Plastics pipe fittings and couplings. ²

Frequently asked questions

• What activities define NAICS 332919?

  • It covers manufacturing of metal valves and pipe fittings not elsewhere classified, excluding industrial valves, fluid power valves/hose fittings, and plumbing fixture fittings/trim. Census examples include aerosol valves, firefighting nozzles, lawn hose nozzles, and lawn sprinklers. ²

• How does 332919 differ from 332911 and 332912?

  • 332911 covers industrial-type valves (including water works). 332912 covers fluid power valves and hose fittings. 332919 captures other metal valves and pipe fittings not in those industries or in plumbing fixture fittings/trim. ²

• Are cast-iron or plastic pipe fittings part of 332919?

  • No. Cast-iron pipe fittings are classified in 33151 (Ferrous Metal Foundries), and plastics pipe fittings/couplings are in 32612. 332919 applies to metal pipe fittings excluding cast-iron couplings. ²

• Which PSCs often align with products in 332919 buys?

  • Common product codes include 4820 (Valves, Nonpowered) and 4730 (Fittings and Specialties; Hose, Pipe, and Tube). PSC selection depends on the specific item being procured; PSCs describe the purchase, not the supplier’s NAICS. ⁴

• What is the current NAICS vintage and transition timeline?

  • The current vintage is 2022. Census began releasing data on a 2022 NAICS basis with the 2022 Economic Census and plans full adoption across economic programs by the end of 2027, with program-by-program transitions occurring through that period. ³

Useful resources

• G2X — NAICS 332919
• Census NAICS definition for Sector 31–33 (includes 332919 text). ²
• Census guidance: Understanding NAICS and industry classification. ¹
• PSC Manual (April 2025) for product/service coding (e.g., 4820, 4730). ⁴
• Census note on implementing the 2022 NAICS vintage. ³

References

1. U.S. Census Bureau — 2017 North American Industry Classification System (NAICS) Manual (overview and background). https://www.census.gov/library/publications/2017/econ/2017-naics-manual.html
2. U.S. Census Bureau — NAICS Sector 31–33 Manufacturing (industry definitions and cross-references including 332919). https://www.census.gov/naics/resources/archives/sect31-33.html
3. U.S. Census Bureau — Implementation of the 2022 NAICS (vintage, timeline, and change notes). https://www.census.gov/library/reference/code-lists/naics/2022/implementation-timeline.html
4. Acquisition.gov — Product and Service Codes (PSC) Manual, April 2025 (official PSC descriptors such as 4820 and 4730). https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf