This standard covers 3- to 48-in. (76- to 1,219-mm) gray-iron and\/or ductile-iron fittings to be used with ductile-iron pipe for water. Requirements for fittings with mechanical joints and flanged joints are listed in Tables 1 through 20 at the end of this standard. This standard may also be used for fittings with push-on joints or such other joints as may be agreed on at the time of purchase.<\/p>\n
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| 9<\/td>\n | Foreword I.\tIntroduction. I.A.\tBackground.\u2003American 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 I.B.\tHistory.\u2003The 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. <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | I.C.\tAcceptance.\u2003In 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 <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | II.\tSpecial Issues. II.A.\tAdvisory Information on Product Application.\u2003Unless otherwise provided in the purchaser\u2019s documents, all fittings and accessories shall comply with this standard. II.B.\tChlorine and Chloramine Degradation of Elastomers.\u2003The 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 <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | III.\tUse of This Standard.\u2003It 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. III.A.\tPurchaser Options and Alternatives.\u2003The following items should be provided by the purchaser: <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | III.B.\tSpecial Service Requirements.\u2003The following special service requirements should be noted: <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | III.C.\tModification to Standard.\u2003Any modification to the provisions, definitions, or terminology in this standard must be provided by the purchaser. IV.\tMajor Revisions.\u2003The major revisions made to this standard in this edition are as follows: V.\tComments.\u2003If you have any comments or questions about this standard, please call AWWA\u00a0Engineering 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. <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | AWWA Standard SECTION 1:\u2002GENERAL Sec.\u20021.1\tScope <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Sec.\u20021.2\tPurpose Sec.\u20021.3\tApplication SECTION 2:\u2002REFERENCES <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | SECTION 3:\u2002DEFINITIONS <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | SECTION 4:\u2002REQUIREMENTS Sec.\u20024.1\tMaterials Sec.\u20024.2\tPermeation Sec.\u20024.3\tGeneral Requirements <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Sec.\u20024.4\tCoatings and Linings <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Sec.\u20024.5\tSpecial Requirements for Flanged Fittings SECTION 5:\u2002VERIFICATION Sec.\u20025.1\tInspection by Manufacturer <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | Sec.\u20025.2\tInspection by Purchaser Sec.\u20025.3\tTolerances or Permitted Variations <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | Sec.\u20025.4\tAcceptance Tests Table 1\tGray-iron test specimens and acceptance values <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | Sec.\u20025.5\tChemical Limitations <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Sec.\u20025.7\tPerformance Requirements Sec.\u20025.8\tDefective Specimens and Retests Sec.\u20025.9\tRejection of Fittings Sec.\u20025.10\tDetermining Rejection SECTION 6:\u2002DELIVERY Sec.\u20026.1\tMarking <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | Table 2\tMinimum dimensional requirements for cast markings Sec.\u20026.2\tNotice of Nonconformance Sec.\u20026.3\tAffidavit of Compliance Figure 1\tMechanical-joint plain-end dimensions and tolerances (see Table 3) <\/td>\n<\/tr>\n | ||||||
| 81<\/td>\n | APPENDIX A <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" AWWA C110-21 Ductile-Iron and Gray-Iron Fittings<\/b><\/p>\n |