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AWWA C116/A21.16-22 Protective Fusion-Bonded Coatings for the Interior and Exterior Surfaces of Ductile-Iron and Gray-Iron Fittings, 2022
- Foreword [Go to Page]
- I. Introduction. [Go to Page]
- I.A. Background. Prior to the development of this standard, ductile-iron and gray-iron fittings used for water service were furnished with a cement–mortar lining in accordance with ANSI/ AWWA C104/A21.4, Cement–Mortar Lining for Ductile-Iron Pipe and Fitt [Go to Page]
- I.B. History. American National Standards Committee A21 on Cast-Iron Pipe and Fittings was organized in 1926 under the sponsorship of the American Gas Association (AGA), the American Society for Testing and Materials (ASTM), the American Water Works Assoc [Go to Page]
- I.C. Acceptance. In May 1985, the US Environmental Protection Agency (USEPA) entered into a cooperative agreement with a consortium led by NSF International* (NSF) to develop voluntary third-party consensus standards and a certification program for direct
- II. Special Issues. Holiday testing requires special handling and treatment of fittings and is not a routine production test. If experience indicates that severe service conditions exist that justify the added expense, the purchaser documents shall reques [Go to Page]
- II.A. Chlorine and Chloramine Degradation of Elastomers. The selection of materials is critical for water service and distribution piping in locations where there is a possibility that elastomers will be in contact with chlorine or chloramines. Documented
- III. Use of This Standard. It is the responsibility of the user of an AWWA standard to determine that the products described in that standard are suitable for use in the particular application being considered. [Go to Page]
- III.A. Purchaser Options and Alternatives. The following items should be determined by the purchaser:
- IV. Major Revisions. Major revisions made to the standard in this edition include the following:
- V. Comments. If you have any comments or questions about this standard, please call AWWA Engineering and Technical Services at 303.794.7711, FAX at 303.795.7603; write to the department at 6666 West Quincy Avenue, Denver, CO 80235-3098; or email at standa
- AWWA Standard
- SECTION 1: GENERAL
- Sec. 1.1 Scope
- Sec. 1.2 Purpose
- Sec. 1.3 Application
- SECTION 2: REFERENCES
- SECTION 3: DEFINITIONS
- SECTION 4: REQUIREMENTS
- Sec. 4.1 Materials
- Sec. 4.2 Surface Preparation
- Sec. 4.3 Coating Application
- Sec. 4.4 Coating System Qualification
- SECTION 5: VERIFICATION
- Sec. 5.1 Qualification Testing
- Sec. 5.2 Production Testing
- Sec. 5.3 Holiday Testing
- Sec. 5.4 Inspection by Purchaser
- Sec. 5.5 Basis for Rejection
- SECTION 6: DELIVERY
- Sec. 6.1 Marking
- Sec. 6.2 Shipping, Handling, and Storage Precautions
- Sec. 6.3 Affidavit of Compliance [Go to Page]
