- Aqua-Zyme Disposal Systems, Inc.
- BDP Industries, Inc.
- Centrisys/CNP
- Cornell Pump Company
- DIPRA (Ductile Iron Pipe Research Association)
- FKC Co., Ltd.
- Flottweg Separation Technology, Inc.
- Franklin Electric
- Hastings Irrigation Pipe Co.
- Headworks International, Inc.
- Parkson Corporation
- Pigs Unlimited, Inc.
- Pinnacle Manufacturing LLC
- Prime Solution, Inc.
- SAVECO North America, Inc.
- Thompson Pump and Manufacturing Company
- Tsurumi Pump
- Vertiflo Pump Company
