Manufacturers
- ACE
- Allied Tube & Conduit
- American Grating
- Asahi America
- Banjo
- Barnant
- Blue White Industries
- Canyon Packaging Plus
- Carl Fratus Sales
- Charlotte Pipe & Foundry
- Chem-Tainer Industries
- Claude Laval
- Colder Products
- Compac Engineering
- Control Devices
- Design Tanks
- Dixon Valve & Coupling
- Dura Plastic Products
- Eaton Filtration
- Eldon James
- Enduro
- Engineered Piping Systems
- Excalibur Extrusions
- Fiber Glass Systems
- FitlerCor
- Flexaust
- Flowline
- Flux Pumps
- Freelin-Wade
- Gehr Plastics
- Gems Sensor
- Georg Fischer
- Georg Fischer Harvel Pipe
- Georg Fischer Little Rock
- Georg Fischer Signet
- Great Plains Industries
- H. W. Eckhardt
- Halkey Roberts
- Hanna Instruments
- Harmsco
- Hayward Industrial
- HellermannTyton
- IPEX USA
- IPS Corporation
- Iwaki America
- Jaco Manufacturing
- John Guest USA
- Kanaflex Corporation
- King Instruments
- Koflo Corporation
- Kuriyama Of America
- Lasco Fittings
- Lortech Rubber
- Lutz Pump
- M & A Plastics
- Madison
- March Manufacturing
- Marquest Scientific
- Mazzei Injector
- MCC USA
- Micropump
- Moyno Industrial Products
- Multi-Duti Manufacturing
- Murray Corporation
- Myron L
- Nalge Nunc International
- Neptune Chemical Pump
- Nibco
- Norma Pennsylvania
- Norwesco
- Paramount Can
- Parker / Nycoil
- Parker Hannifin
- Pentair Filtration Solutions
- Plastic Trends
- Plastomatic Valves
- Primary Fluid Systems
- Process Technology
- Reed Manufacturing
- Rhino Tank Fittings
- Rieke Corporation
- RK Industries
- Ronco Plastics
- Saint Gobain Performance Plastics
- Sensorex Corporation
- Spears Manufacturing
- Texloc
- Thogus Products
- United Pipe & Steel
- Venture Measurement
- Vycom
- Walchem Corporation
- Warren Rupp
- Wika Instrument