| B&K, LLC | BASF Corporation | BIS Pipe Fitting Industry Co., Ltd. | Blacoh Fluid Control, Inc. | BMI Canada Inc. | Boshart Industries, Inc. | Bradford White Corp. |
| Cambridge Brass Inc. | CLA-VAL | Con-Tech of California | Conbraco Industries, Inc. | Concrete Sealants, Inc. | Crispin Valve |
| Edmund A. Gray Co., Inc. | Electronic Sensor Products | Ever Performance Polymers Corp., | Everflow Supplies, Inc. |
| Ferguson Enterprises, Inc. | Fisher Manufacturing | Flomatic Corporation | Franklin Electric Co., Inc. | Freedom Chemical Corporation | Fu San Machinery Co. Ltd. | Fu San Valve Co. Ltd. |
| General Coatings Manufacturing Corp. | Global EcoTechnologies, Inc. | Great Sequoia Corp. | Griswold Controls |
| IDAC Corporation | Imperial Pipe Services, LLC | Inline Industries Inc. | InstaCote, Inc. | Integrity Fusion Products, Inc. |
| NCFI Polyurethanes | NIBCO, Inc. | Ningbo Xieli Metal Products Co., LTD | Noritz American Corp | Nu Flow Technologies (2000) Inc. | Nukote Coating Systems International | NWCAT, LLC |
| PanNext Pipe Fitting Co. | PHC Distribution Inc. | Picote Solutions, Inc. | Poly-Tuff Systems International | Polycoat Products | Prime Resins, Inc. | PT Ever Age Valves Metals |
| Raven Lining Systems, Inc. | Red-White Valve Corp | Resin Acuro | Rheem Sales Company Inc | Rhino Linings Corporation | Ross Valve Mfg. Co., Inc. |
| SealBoss Corporation | Sika Corporation | Sika Services AG | Simmons Manufacturing Company, Inc. | Sipp Technologies, LLC | Smith Cooper International | Specialty Products, Inc. |
| Tank Connection LLC | Thakor Reductants PVT. LTD. | The Euclid Chemical Company | The Ford Meter Box Company, Inc. | ThermOmegaTech, Inc. | Total Automation Works, LLC | Triangle Tube |