AWWA C207-2018
AWWA C207-2018 Steel Pipe Flanges for Waterworks Service, Sizes 4 In. Through 144 In. (100 mm Through 3,600 mm) This standard describes ring-type slip-on flanges and blind flanges. The flange pressure limits and the tables that describe them are Ring-type, slip-on flanges (see Tables 2, 3, and 4). Blind flanges (see Table 5).