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AWWA C509   2023   Resilient-Seated Gate Valves for Water Supply Service 40 $
AWWA C509   2015   Resilient-Seated Gate Valves for Water Supply Service 40 $
AWWA C509   2009   Resilient-seated Gate Valves for Water Supply Service 25 $
AWWA C509   2001   Resilient-seated Gate Valves for Water Supply Service 25 $
AWWA C509   1994   Resilient-seated Gate Valves for Water Supply Service 15 $