The purpose of this standard is to provide purchasers, manufacturers, and applicators with the minimum requirements for fusion-bonded coatings and linings for the interior and exterior of fittings.<\/p>\n
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| 9<\/td>\n | Foreword I.\tIntroduction. I.A.\tBackground.\u2003Prior to the development of this standard, ductile-iron and gray-iron fittings used for water service were furnished with a cement\u2013mortar lining in accordance with ANSI\/ AWWA\u00a0C104\/A21.4, Cement\u2013Mortar Lining for Ductile-Iron Pipe and Fitt I.B.\tHistory.\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 American Society for Testing and Materials\u00a0(ASTM), the American Water Works Assoc <\/td>\n<\/tr>\n | ||||||
| 10<\/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 | ||||||
| 11<\/td>\n | II.\tSpecial Issues.\u2003Holiday 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 II.A.\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 | ||||||
| 12<\/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 determined by the purchaser: IV.\tMajor Revisions.\u2003Major revisions made to the standard in this edition include the following: V.\tComments.\u2003If 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 <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | AWWA Standard SECTION 1:\tGENERAL Sec. 1.1\tScope Sec. 1.2\tPurpose Sec. 1.3\tApplication <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | SECTION 2:\tREFERENCES SECTION 3:\tDEFINITIONS <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | SECTION 4:\tREQUIREMENTS Sec. 4.1\tMaterials <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | Sec. 4.2\tSurface Preparation Sec. 4.3\tCoating Application Sec. 4.4\tCoating System Qualification SECTION 5:\tVERIFICATION Sec. 5.1\tQualification Testing <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Sec. 5.2\tProduction Testing <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Sec. 5.3\tHoliday Testing Sec. 5.4\tInspection by Purchaser Sec. 5.5\tBasis for Rejection SECTION 6: DELIVERY Sec. 6.1\tMarking Sec. 6.2\tShipping, Handling, and Storage Precautions <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Sec. 6.3\tAffidavit of Compliance <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" AWWA C116\/A21.16-22 Protective Fusion-Bonded Coatings for the Interior and Exterior Surfaces of Ductile-Iron and Gray-Iron Fittings<\/b><\/p>\n |