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The following AWWA Standards are effective January 1, 2019: C502-18 Dry-Barrel Fire Hydrants C503-18 Wet-Barrel Fire Hydrants C518-18 Double-Disc Swing-Check Valves for Waterworks Service C521-18 Plastic Ball Valves G410-18 Business Practices for Operation and ...
This standard specifies the requirements for metal ball valves suitable for petroleum, petrochemical and industrial applications that have: — flanged ends in sizes NPS ½ through NPS 20 (DN 15 through DN500); — butt-welding ends in sizes NPS ½ through NPS 20 (DN 15 through DN 500); — ...
Effectively managing valves as an asset can have a significant impact both for the water utility and the customer. ...