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AWWA C519-2025
High-Performance Waterworks Butterfly Valves—3 In. (75 mm) Through 60 In. (1,500 mm)
The purpose of this standard is to provide the minimum requirements for ductile-iron, steel, and alloy high-performance butterfly valves suitable for raw, potable, and reclaim/reuse water service
AWWA: American Water Works Association [awwa]