- A.O. Smith
- ABT, Inc.
- AGF Manufacturing, Inc.
- AIRCOM USA, Inc.
- American Gas Safety
- Apollo Values
- Asahi/America, Inc.
- AWI Manufacturing
- BeaconMedaes
- Canature WaterGroup
- Charlotte Pipe and Foundry Company
- Copper Development Association, Inc.
- Dallas Specialty & Manufacturing Company
- Delta Commercial
- EFFEBI S.P.A.
- EVAC North America, Inc.
- GF Piping Systems
- Grundfos Commercial
- H20 Degree
- Heating Solutions Sales Company
- Holby Value
- Intellihot Inc.
- Judo Water Treatment
- KITZ Corporation of America
- LiquiTech, Inc.
- Lubrizol
- Masco/Delta
- Mitsubishi Chemical
- Niagara
- NIBCO, Inc.
- Noble Company
- NuFlow Technologies
- PermaDrain
- Plastics Pipe Institute
- Powerex
- Preferred Utilities MFG Corporation
- Reliance Worldwide
- Rheem Manufacturing Company
- Symmons
- T & S Brass & Bronze Works
- Therm-Omega-Tech, Inc.
- Tramco Pump Company
- Vista Water Group
- WATTS
- WILO USA/Weil Pump
- Xerxes by SHAWCOR
- Zurn Industries
