By American Water Works Association
This guide publications operators within the choice, deploy, and upkeep of air valves in ingesting water offer functions. assurance contains air valve kinds, valve place, valve orifice sizing, water hammer, deploy, operation, defense, and upkeep.
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Additional resources for Air-Release, Air/Vacuum & Combination Air Valves
Gases drawn into a pipeline can exit through air valves and remain in the underground structure. Always ventilate the underground structure and use a combustible gas and low-oxygen detector before entering the structure. Consult Occupational Safety and Health Administration rules and procedures, such as the need for harnesses and ground-level supervision, in all underground work. Inspection When inspecting air valves, isolate the valve by closing the shutoff valve before putting hands and fingers into the valve outlet.
18f. P Pipelines air pockets 1 sources of air entry 2 valve locations 7 and water hammer 8f. 25 S Small orifice valves. See Air-release valves V Valve vaults Vertical turbine pumps 29 29f. 9 24 W Water hammer 23 and air/vacuum valves 23 and combination air valves 23 in pipelines 25 and well pumps 24 24f. Well pumps. See Deep-well pumps, Vertical turbine pumps This page has been reformatted by Knovel to provide easier navigation.
AWWA M11. 1989. Steel Pipe-A Guide for Design and Installation, 3rd edition. Denver, Colo. AWWA Standard for Air-Release, AirNacuum and Combination Air Valves for Waterworks Service, AWWA C512-92 (1st edition), Denver, Colo. Colorado State University. 1977. Concepts of Water Hammer & Air Entrapment in the Filling & Testing of Pipelines. Fort Collins, Colo. Dean, John A. 1992. Lange’s Handbook of Chemistry. McGraw Hill, New York. Edmunds, Robert C. 1979. Air Binding in Pipes, Journal AWWA, May, 1979.
Air-Release, Air/Vacuum & Combination Air Valves by American Water Works Association