Variant of North American Industry Classification System (NAICS) 2022 Version 1.0 for Industrial production (based on the 2008 International Recommendations for Industrial Statistics)

• 1 - Industrial production
• 31-33 - Manufacturing
• 332 - Fabricated metal product manufacturing
• 3329 - Other fabricated metal product manufacturing

33291 - Metal valve manufacturing

This industry comprises establishments primarily engaged in casting and machining metal valves used to regulate the flow of fluids, liquids and gases, and related fixtures and fittings. Establishments primarily engaged in manufacturing hydraulic and pneumatic pipe and tube assemblies are included.