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AWWA C509-15
- Resilient-Seated Gate Valves for Water-Supply Service
- standard by American Water Works Association, 02/01/2016
- Publisher: AWWA
$41.00$81.00
This standard describes resilient-seated gate valves with nonrising stems (NRS) and outside screw-and-yoke (OS&Y) rising stems, including tapping gate valves for water supply service. The resilient-seated gate valve has been in service in various water utility applications since 1975.