- Anvil International – Full Line
- Apex Packing & Rubber – Full Line
- A.Y. McDonald – Full Line
- Darco Southern – Packing
- Ernst Flow Industries – Tank Gauges, Flow Indicators & Sight Windows
- FEBCO – Backflow Preventers
- Flexitallic – Spiral Wound Gaskets
- Flow Smart – Sanitary Screen & Sock Gasket Assemblies
- Garden Machine Company – Float Valves & Floats
- Garlock – Full Line
- Gore-Tex – Full Line
- Hayward Flow Control – PVC Valves, Strainers & Accessories
- Henry – Cryogenic
- John Crane – Packing and Mechanical Seals
- Lamons Gasket Company – Spiral Wound Gaskets
- Leader Gasket – Spiral Wound Gaskets
- Kalrez – O-Rings
- Michigan Hanger – Pipe Hangers
- Mueller Steam Specialty – Full Line
- Proco – Expansion Joints
- RectorSeal – Full Line
- Titan Flow Control – Valves & Strainers
- U.S. Seal Mfg. – Mechanical Seals
- Utex – Full Line
- Watts Regulator – Full Line
- Westlock – Full Line
- Special Made-to-Order Gaskets
- Andron – Sanitary Fittings
- Allied Fitting – Carbon Steel Flanges
- Anvil International – Full Line
- ASP – Alloy Stainless Fittings & Flanges
- Beck – Couplings
- Boltex – Forged Steel Flanges
- Bonney Forge – Forged Steel
- Camco – Alloy Stainless Fittings
- Capitol Pipe & Steel – Full Line
- Cello Products – Full Line
- Century Eslon – PVC & CPVC Pipe & Fittings
- Colonial Engineering – PVC, Full Line
- DynaQuip – Full line
- Flowline – Alloy Flanges, Welded Fittings
- Gerlin – Alloy Flanges, Welded Fittings
- Hoke – Full Line
- LASCO Fittings, Inc. – PVC & CPVC Fittings Maass Flange Corp. – Flanges
- Merit Brass – Full Line
- Mills Iron Works – Swage Nipples
- Mueller Industries – Streamline Copper
- Penn Machine – Forged Alloy Fittings
- PICOR Chem/Pharm – Alloy Fittings
- Quality Pipe Products – Full Line
- Robert James – Sanitary SS Fittings
- Smith-Cooper – Full Line
- Spears Manufacturing – Full Line PVC
- Taylor Forge – Forged Steel
- Texas Metal Works – Flanges
- Tylok Fittings & Valves – Full Line
- Ward Mfg. – Malleable Fittings
- Westbrook Mfg. – Full Line
- Wisconsin Nipple – Pipe Nipples
- W F I International – O-Let’s – Full Line
- Andron – Sanitary Tube
- ARMCO – Pipe
- Cerro Flow Products – Copper Tube
- Crestline – PVC Pipe
- Century Eslon – PVC & CPVC Pipe
- Gibson Tube – Alloy Tubing
- LTV Tubular – Carbon & Alloy Pipe
- Laclede – Welded Steel Pipe
- Mueller Industries – Copper
- Sandvik – Alloy Tubing
- Wheatland Tube – Welded Pipe
- Sharon Tube – Seamless & Welded Pipe
- Small Tube Products – Seamless Copper Tube
- Spears Manufacturing – PVC & CPVC
- Andron – Sanitary Valves
- Bonney Forge – Forged Steel
- Cash Acme – Full Line
- Check-All Valve – Check Valves
- Chem-Plug – Plug Valves
- Colonial Engineering – PVC Valves
- Crane Valves – Full Line
- Dresser Consolidated – Safety Relief
- Durabla – Check Valves
- Hammond – Full Line
- Henry – Cryogenic
- Hoke – Full Line
- Homestead Valve – Plug Valves
- JE Lonergan – Safety Relief
- KTM – Ball Valves
- Kitz – Full Line
- Kunkle – Safety Relief
- Lunkenheimer – Full Line
- Magnatrol Valve Corp. – Full Line
- Milwaukee Valve – Full Line
- Mueller Industries – Full Line
- NEWCO – Full Line
- Newdell Company – Forged Steel
- Powell Valves – Full Line
- Smith – Forged Steel
- Spears Manufacturing – PVC
- Strahman – Valves
- Titan Flow Control – Check Valves
- Tyco – Valves
- Tylok Fittings & Valves – Full Line