By American Water Works Association
This guide courses operators within the choice, set up, and upkeep of air valves in ingesting water provide purposes. insurance comprises air valve varieties, valve situation, valve orifice sizing, water hammer, deploy, operation, protection, and upkeep.
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Extra resources for Air-Release, Air/Vacuum & Combination Air Valves
Valve Coating Internal and external valve corrosion should be controlled by applying the proper coating when necessary. Bolting Material All nuts and bolts should be protected to prevent corrosion. Valves Located Aboveground Aboveground air valves should be protected from freezing, contamination, or vandalism. Valves Located Belowground In addition to the protection from freezing, contamination, and vandalism, air valves located belowground should also be provided with a proper valve vault. 1 Air Valve Shutoff Valve Pipeline Riser Figure 6-1 Pipeline installation of an air-release valve Copyright (C) 2001 American Water Works Association All Rights Reserved INSTALLATION, OPERATION, MAINTENANCE, AND SAFETY 29 Valve Vault A valve vault should have adequate screened ventilation to satisfy the air requirements for the valve and ventilation of the structure as shown in Figure 6-2.
20f. 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.
20-3, March. E. 1972. Locating and Sizing Air-Release Valves, Journal AWWA, July. , et al. 1989. Pumping Station Design, Butterworth-Heinemann, Boston. Theory, Application, and Sizing o f Air Valves 1997. Val-Matic Valve & Mfg. Corp. D. 1991. L. George Ltd. Tullis, J. Paul 1989. Hydraulics of Pipelines, John Wiley & Sons, New York. Wisner, Paul E. 1975. Removal of Air From Water Lines, Journal of the Hydraulics Division, ASCE, February. J. Surge Reference Manual, Department of Civil Engineering, University of Kentucky, latest edition.
Air-Release, Air/Vacuum & Combination Air Valves by American Water Works Association