This standard describes 3-in. through 64-in. (76-mm through 1,600-mm) ductile-iron compact fittings to be used with ductile-iron pipe or pipe made of other materials with similar outside diameters for conveying water. Minimum working
pressures by size range are as follows: 3-in. through 24-in. (76-mm through 610-mm): 350 psi (2,413 kPa); 30-in. through 48-in. (762-mm through 1,219-mm): 250 psi (1,724 kPa); and 54-in. through 64-in. (1,400-mm through 1,600-mm): 150 psi (1,034 kPa). Fittings are adequate for the rated working pressure plus a surge allowance of 100 psi or a surge allowance of half the rated working pressure,
whichever is less.
Fittings with mechanical joints are listed in this standard for the 3-in. through 48-in. (76-mm through 1,219-mm) sizes. The standard also may be used for fittings of these sizes with push-on joints or other joints as agreed on at the time of purchase.
Fittings with push-on joints and flanged joints are listed in this standard for the
54-in. through 64-in. (1,400-mm through 1,600-mm) sizes. Fittings with flange joints are not discussed in this standard for sizes 3 in. through 48 in. (76 mm through 1,219 mm) because of the importance of standardized center-to-flange face dimensions for these sizes already described in ANSI*/AWWA C110/A21.10.
Fittings with plain ends are listed for bends and reducers of the 3-in. through 64-in. (76-mm through 1,600-mm) size range and for tees and crosses of the 54-in. through 64-in. (1,400-mm through 1,600-mm) size range.
ANSI/AWWA C153/A21.53-2006 Referenced Document
ANSI/AWWA C104/A21.4 Cement–Mortar Lining for Ductile-Iron Pipe and Fittings*， 2023-02-01 Update
ANSI/AWWA C111/A21.11 Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings*， 2017-04-01 Update
ANSI/AWWA C116/A21.16 Protective Fusion- Bonded Coatings for the Interior and Exterior Surfaces of Ductile-Iron and Gray-Iron Fittings*， 2023-02-01 Update
ANSI/AWWA C207 Steel Pipe Flanges for Waterworks Service@ Sizes 4 In. Through 144 In. (100 mm Through 3@600 mm)*， 2018-01-20 Update
ASTM A536 Standard Specification for Ductile Iron Castings*， 2009-05-01 Update