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AWWA C110-21 Ductile-Iron and Gray-Iron Fittings, 2021
- Foreword [Go to Page]
- I. Introduction. [Go to Page]
- I.A. Background. 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 ASTM International (ASTM), the American Water Works Association (AWWA), and th [Go to Page]
- I.B. History. The evolution of AWWA and ANSI standards for fittings is presented in this foreword to provide information relating to systems having aged cast-iron pipe and fittings still in service. [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. [Go to Page]
- II.A. Advisory Information on Product Application. Unless otherwise provided in the purchaser’s documents, all fittings and accessories shall comply with this standard. [Go to Page]
- II.B. 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 provided by the purchaser: [Go to Page]
- III.B. Special Service Requirements. The following special service requirements should be noted:
- III.C. Modification to Standard. Any modification to the provisions, definitions, or terminology in this standard must be provided by the purchaser.
- IV. Major Revisions. The major revisions made to this standard in this edition are as follows:
- V. Comments. If you have any comments or questions about this standard, please call AWWA Engineering and Technical Services at 303.794.7711, write to the department at 6666 West Quincy Avenue, Denver, CO 80235-3098, or e-mail at standards@awwa.org.
- 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 Permeation
- Sec. 4.3 General Requirements
- Sec. 4.4 Coatings and Linings
- Sec. 4.5 Special Requirements for Flanged Fittings
- SECTION 5: VERIFICATION
- Sec. 5.1 Inspection by Manufacturer
- Sec. 5.2 Inspection by Purchaser
- Sec. 5.3 Tolerances or Permitted Variations
- Sec. 5.4 Acceptance Tests [Go to Page]
- Table 1 Gray-iron test specimens and acceptance values
- Sec. 5.5 Chemical Limitations
- Sec. 5.7 Performance Requirements
- Sec. 5.8 Defective Specimens and Retests
- Sec. 5.9 Rejection of Fittings
- Sec. 5.10 Determining Rejection
- SECTION 6: DELIVERY
- Sec. 6.1 Marking [Go to Page]
- Table 2 Minimum dimensional requirements for cast markings
- Sec. 6.2 Notice of Nonconformance
- Sec. 6.3 Affidavit of Compliance [Go to Page]
- Figure 1 Mechanical-joint plain-end dimensions and tolerances (see Table 3) [Go to Page]
- APPENDIX A [Go to Page]
