This standard describes 3-in. through 64-in. (80-mm through 1,600-mm) flanged ductile-iron pipe with ductile-iron or gray-iron threaded flanges for potable water, wastewater, and reclaimed water service. Flanged pipe and flanges are rated for a maximum working pressure of 250 psi (1,720 kPa). However, 24-in. (600-mm) and smaller flanged joints with ductile-iron flanges may be rated for a maximum working pressure of 350 psi (2,413 kPa), as noted in the footnote of Table 1. Major revisions made to the standard in this edition include the following: the scope of the standard was revised to include wastewater and reclaimed water (Sec. 1.1); a new Sec. 4.1.2, Certification, was added to include a requirement for NSF/ ANSI 61 certification on products if they will be in contact with potable water; Standards Council language was added for a new section on permeation (Sec. 4.1.3); and, descriptions of asphaltic coating and lining were revised in Sec. 4.5.1, Outside coating, and Sec. 4.5.3, Asphaltic lining.
