C110/A21.10-98: American National Standard for Ductile-Iron and Gray-Iron Fittings, 3 In. Through 48 In. (76 mm Through 1,219 mm), for Water (PDF)
SKU: STC_0050015-PDF
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.
Description
The major revisions in this edition of ANSI/AWWA C110/A21.10-98 include the following: the format has been changed to AWWA standard style; Section I.A, Background, was revised to recognize the withdrawal of the American Gas Association as secretariat of the A21 Committee; the acceptance clause (Sec. I.C) has been revised to approved wording; the advisory information paragraph (Sec. II.A) was revised and moved from the body of the standard into the foreword; the scope of the standard has been limited to water service and all references to gas and other liquids have been eliminated; the scope was amended to recognize 350-psi (2,413-kPa) ratings for 12-in. (305-mm) and smaller flanged ductile-iron fittings when used with special gaskets; cement-mortar linings (Sec. 4.3.2) was revised to reflect the optional status of seal coat in the latest revision of ANSI/AWWA C104/A21.4; special coatings and linings (Sec.4.3.3) was revised to include asphaltic material as a special lining; Table 1 was revised in accordance with the 1995 revision of ANSI/AWWA C111/A21.11, revisions include plus tolerances on the K1, K2, and L dimensions; longer bolt lengths for the 42- and 48-in. (1,067- and 1,219-mm) sizes, and the footnote on ductile-iron glands; Tables 16 through 19 on flanged fittings were revised to show the use of ductile iron for 3- to 12-in. (76- to 305-mm) flanged fittings with the same dimensions as gray-iron fittings, and explanatory footnotes were also added; and, the gaskets section of appendix A was revised to describe the rubber material as being synthetic.