AWWA C207 Class D (175–150 Psi) Blind-Flanges

AWWA C207 Class D (175-150 psi) Blind Flanges are part of the American Water Works Association (AWWA) standard for steel pipe flanges. Class D indicates the pressure rating range of the flange, which typically falls between 175 and 150 psi (pounds per square inch). Blind flanges serve the purpose of sealing the end of a pipe system or vessel opening, providing convenient access for inspection, cleaning, or modification. These flanges are commonly used in water supply systems, wastewater treatment plants, and other applications where AWWA standards are followed and higher pressure ratings are required compared to Class B flanges.

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