AWWA - American Water Works Association https://yse.yabesh.ir/std/handle/yse/120 2026-05-15T16:49:09Z 2026-05-15T16:49:09Z Air Valve and Vent Inflow Preventer Assemblies for Potable Water Distribution System and Storage Facilities AWWA - American Water Works Association https://yse.yabesh.ir/std/handle/yse/336733 2024-12-17T10:25:21Z 2020-01-01T00:00:00Z Air Valve and Vent Inflow Preventer Assemblies for Potable Water Distribution System and Storage Facilities; AWWA C514 2020 Edition AWWA - American Water Works Association 2020-01-01T00:00:00Z Air-Release, Air/Vacuum, and Combination Air Valves for Water and Wastewater Service AWWA - American Water Works Association https://yse.yabesh.ir/std/handle/yse/336732 2024-12-17T10:25:21Z 2015-01-01T00:00:00Z Air-Release, Air/Vacuum, and Combination Air Valves for Water and Wastewater Service; AWWA C512 2015 Edition AWWA - American Water Works Association 2015-01-01T00:00:00Z Reduced-Pressure Principle Backflow Prevention Assembly AWWA - American Water Works Association https://yse.yabesh.ir/std/handle/yse/336731 2024-12-17T10:25:20Z 2017-01-01T00:00:00Z Reduced-Pressure Principle Backflow Prevention Assembly; AWWA C511 2017 Edition AWWA - American Water Works Association 2017-01-01T00:00:00Z Double Check-Valve Backflow Prevention Assembly AWWA - American Water Works Association https://yse.yabesh.ir/std/handle/yse/336730 2024-12-17T10:25:20Z 2017-01-01T00:00:00Z Double Check-Valve Backflow Prevention Assembly; AWWA C510 2017 Edition AWWA - American Water Works Association 2017-01-01T00:00:00Z