Water Main Fittings
| Company | Website |
| Clow Valve Company | www.clowvalve.com |
| DeZurik/Copes-Vulcan | www.dezurik.com |
| East Jordan Iron Works | www.ejiw.com |
| Mueller Company | www.muellercompany.com |
| Tyler Pipe Utilities | www.tylerpipe.com |
| U.S. Pipe & Foundry Company | www.uspipe.com |