PVC Valves and Fittings
| Company | Website |
| Asahi American, Inc. | www.asahi-american.com |
| Flo Control, Inc. | www.flocontrol.net |
| Freedom Plastics, Inc | www.freedomplastics.com |
| GPK Products, Inc. | www.gpk-fargo.com |
| Harrington Corporation | www.harcofittings.com |
| Inserta Fittings Company | www.insertatee.com |
| Lasco Fittings Inc. | www.lascofittings.com |
| Multi Fittings Corp. | www.multifittings.com |
| Nyloplast | www.nyloplast.ni |
| Plastic Trends Inc. | www.plastictrends.com |
| Reliner / Duran Inc. | www.reliner.com |
| Spears Manufacturing Company | www.spearsmfg.com |
| Specified Fittings, Inc. | www.specfit.com |