Historical
AWWA C515-09
Reduced-Wall, Resilient-Seated Gate Valves For Water Supply Service
This standard describes reduced-wall, 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 having a temperature range of 33 to 125F (0.
AWWA: American Water Works Association [awwa]