| 2007 NAICS | 2012 NAICS | 2017 NAICS | Corresponding Index Entries | |||
| 332913 | 332913 | 332913 | Antiscald bath and shower valves, plumbing, manufacturing | |||
| 332913 | 332913 | 332913 | Backflow preventers, plumbing, manufacturing | |||
| 332913 | 332913 | 332913 | Cocks, drain, plumbing, manufacturing | |||
| 332913 | 332913 | 332913 | Drain cocks, plumbing, manufacturing | |||
| 332913 | 332913 | 332913 | Faucets, plumbing, manufacturing | |||
| 332913 | 332913 | 332913 | Flush valves, plumbing, manufacturing | |||
| 332913 | 332913 | 332913 | Plumbing fittings and couplings (e.g., compression fittings, metal elbows, metal unions) manufacturing | |||
| 332913 | 332913 | 332913 | Plumbing fixture fittings and trim, all materials, manufacturing | |||
| 332913 | 332913 | 332913 | Shower heads, plumbing, manufacturing | |||
| 332913 | 332913 | 332913 | Spigots, plumbing fixture fitting, manufacturing | |||
| 332913 | 332913 | 332913 | Stopcock drains, plumbing, manufacturing | |||
| 332913 | 332913 | 332913 | Supply line assemblies, plumbing (i.e., flexible hose with fittings), manufacturing |