AWWA Standard flange

We supply AWWA standard flanges as following standards, pressures, sizes and types, if the needing flanges are not • in tables, please contact us specially, welcome to make inquiry us.

AWWA and Plate Steel Flanges General Information

American Water Works Association (AWWA) is an international non-profit, scientific and educational association founded to improve water quality and supply. Established in 1881, it has a membership (as of 2012) of around 50,000 members worldwide.

AWWA Vs. ANSI Flange Standards

Both the AWWA and ANSI have thorough standards for flanges, and the two standards are different in several ways.

AWWA standards provide flange properties intended for potable water use only. In contrast, ANSI standards are aimed at industrial flange applications. For example, AWWA flange ratings are applicable only at atmospheric temperature, while ANSI ratings cover flange installations from -20°F to 1500°F.

Dimensional tolerances for AWWA pipe flanges

These tolerances are a part of ANSI B16.5 and AWWA C207-01 Sec. 4.2 except where noted otherwise.

AWWA Flange Charts and Drawings