AWWA C207-07 is a standard published by the American Water Works Association (AWWA) that specifies the dimensions, tolerances, and materials for steel pipe flanges used in waterworks systems. Class D hub flanges are designed for moderate to high-pressure applications in water distribution systems.
Class D hub flanges are classified based on their pressure ratings and are typically used in water treatment plants, wastewater facilities, and municipal water supply networks. These flanges are designed to provide a strong and secure connection between pipes, valves, and fittings in waterworks applications.
In AWWA C207-07, Class D hub flanges are specified based on various dimensions, including flange diameter, bolt hole diameter, bolt circle diameter, hub dimensions, facing dimensions, and thickness specifications. These specifications ensure that the flanges meet the required standards and provide proper alignment and sealing when connected to piping systems.
Class D hub flanges are typically manufactured from materials such as carbon steel or stainless steel to ensure durability and corrosion resistance in water applications. The raised hub in the center of the flange provides additional strength and support when connecting to pipes or valves.
Overall, AWWA C207-07 Class D hub flanges are essential components in water distribution systems, delivering a reliable and leak-free connection for piping infrastructure in water treatment facilities and municipal water supply networks.