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ISO | International Standard Organization
- A worldwide standards coordinating organization. An internationally recognized certification for manufacturers that comply with high standards of quality control. Developed standards ISO-9000 through ISO-9004. |
| IAPMO | International Association of Plumbing & Mechanical Officials
- Qualifies and lists products suitable for use in plumbing installations. |
| ASSE | American Society of Sanitary Engineering
- Develops standards and qualifies products for plumbing and sanitary installations. |
| NSF | National Sanitation Foundation
- A non-profit organization best known for its role in developing standards for equipment, products and services. Many standards govern products for residential use. |
| AGA | American Gas Association
- Develops standards, tests and qualifies products used in gas lines and gas appliance installations. |
| CGA | Canadian Gas Association
- Canadian Association that develops standards, tests and qualifies products used in gas lines and gas appliance installations. |
| UL | Underwriter's Laboratory
- Tests and qualifies valve and fitting products under UL standards for safety. |
| FM | Factory Mutual
- Develops standards and qualifies products for use by the general public. |
| AWWA | American Water Works Association
- Promotes public health through improvement of the quality of water. Develops standards for valves, fittings and other equipment. |
| ADA | American Disability Act
- Assures that products fully comply with the provisions of the act to ensure equal access for physically challenged users. |
| ASME | American Society of Mechanical Engineers
- Develops standards for materials and testing as well as finished products. |
| ASTM | American Society for Testing of Materials
- Develops standards for materials, products, systems and services. |
| ANSI | American National Standards Institute
- Organization that coordinates the work amongst U.S. Standards writing groups. Works in conjunction with other groups such as ISO, ASME, ASTM, etc. |
| MSS | Mechanical Standardization Society of the Valve and Fittings Industry, Inc.
- A committee of manufacturers that develops technical codes and standards for the Valve & Fitting industry. |
