Flange Dimensions
AWWA C207 Waterworks Flanges
Steel flanges for waterworks service per AWWA C207
AWWA C207 covers steel pipe flanges for waterworks service in sizes NPS 4 through NPS 144. Unlike ASME B16.5 and B16.47, which serve the petrochemical industry, AWWA C207 is specifically designed for municipal water transmission and distribution systems. The standard defines both ring-type flanges (flat plates with bolt holes) and hub-type flanges (with a short neck for welding to the pipe). Select a class and type below.
Class B Standard Steel Ring Flanges
86 psi rated ring flanges for water service
Class D Standard Steel Hub Flanges
150 psi rated hub flanges for water service
Class E Standard Steel Hub Flanges
275 psi rated hub flanges for water service
Class E Standard Steel Ring Flanges
275 psi rated ring flanges for water service
Class F Standard Steel Ring Flanges
300 psi rated ring flanges for water service
