Valves, By-pass
| Action Mfg. & Supply Inc. |
| Alan Mfg. |
| Applied Membranes, Inc. |
| Aqua Care Sys., Inc. |
| Aquanetics Sys., Inc. |
| Canadian Water Cond. Inc. |
| CAT PUMPS |
| Charger Water Treatment Products, LLC. |
| DuPage Water Treat. Prod. |
| Engineering Specialties |
| Enting Water Cond., Inc. |
| Filter Soft |
| Fleck Controls Inc. |
| General Pump Inc. |
| Horner Discus Int'l. Inc. |
| Hudson Corp. of Texas |
| International Water Werks, Inc. |
| Ionics, Inc. |
| K & M Plastics, Inc. |
| Krevco |
| Link-O-Matic Co., Inc. |
| MID AMERICA WATER TREATMENT |
| Nelsen Corp. |
| New Age Water Tech. |
| Osmonics Autotrol |
| Plast-O-Matic Valves Inc. |
| Pro-Flo Prod., Inc. |
| Related Prod., Inc. |
| Rowlands Sales Co., Inc. |
| Ryan Herco Prod. Corp. |
| Safe Water Tech., Inc. |
| Specialty Mfg. Co. (The) |
| Springsoft Int'l. |
| Water Tec Int'l. |
| Water Tec Tucson |
| Western Water Prod., Inc. |
| Wood Bros. Ind. II |
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