Historical
AWWA C518-2013
Dual-Disc Swing-Check Valves For Waterworks Service
This standard describes minimum requirements for dual-disc, swing-check valves, sizes 2 in. through 48 in. (50 mm through 1,200 mm) for water service, including materials, design, manufacture, testing, and inspection.
AWWA: American Water Works Association [awwa]
