Registry · SIC Index · Group 34

SIC 3491 — Industrial Valves

SIC 3491 is 'Industrial Valves', a 4-digit Standard Industrial Classification (SIC) code under Major Group 34: Fabricated Metal Products, Except Machinery and Transportation Equipment (Division D: Manufacturing); it maps to modern 2022 NAICS code(s): 332911 (Industrial Valve Manufacturing).

Description & Classification

SIC code 3491 representing 'Industrial Valves' is an industry category in the Standard Industrial Classification (SIC) system under U.S. OSHA and Federal procurement registers.

Modern NAICS Crosswalk

Trace the modern equivalent classifications in the 2022 North American Industry Classification System (NAICS) database:

Classification Details

SIC Code3491
Industry TitleIndustrial Valves
DivisionDivision D: Manufacturing
Major GroupMajor Group 34: Fabricated Metal Products, Except Machinery and Transportation Equipment
Source / VerifiedUS Census 1987 SIC Concordance / 2026-06-28

Related Resources & Compliance Guides

Further regulatory reference links for legacy SIC code 3491:

Related Industries in Major Group 34

3411 - Metal Cans...3412 - Metal Shipping Barrels, Drums, Kegs, and...3421 - Cutlery...3423 - Hand and Edge Tools, Except Machine Tool...3425 - Saw Blades and Handsaws...3429 - Hardware, NEC...3431 - Enameled Iron and Metal Sanitary Ware...3432 - Plumbing Fixture Fittings and Trim...

Frequently Asked Questions (FAQ)

What industry does SIC code 3491 represent?

SIC 3491 is 'Industrial Valves', a 4-digit Standard Industrial Classification (SIC) code under Major Group 34: Fabricated Metal Products, Except Machinery and Transportation Equipment (Division D: Manufacturing); it maps to modern 2022 NAICS code(s): 332911 (Industrial Valve Manufacturing).

What is the modern 2022 NAICS mapping for SIC 3491?

SIC code 3491 maps to modern NAICS codes: 332911 - Industrial Valve Manufacturing.