Operators, technicians, and engineers will locate the knowledge during this guide necessary for gaining a easy figuring out of the use and alertness of air valves. it is a priceless consultant for choosing, sizing, finding, and fitting air valves in ingesting water provide purposes. assurance comprises air valve varieties, valve position, valve orifice sizing, water hammer, install, operation, defense, and upkeep.
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Additional resources for Air-Release, Air/Vacuum and Combination Air Valves
1994. Air In Pipe? Time to Review Air Valve Basics, Opflow, AWWA Vol. 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.
At the job site prior to installation, the air valve should be visually inspected and any packing or foreign material in the interior portion of the valve should be removed. The nameplate information on the air valve should be verified to ensure that the valve coincides with that specified. Location The air valve should be installed as close to the pipe as possible. The interconnecting piping to the air valve must slope upward toward the valve and be large enough to accommodate the required flow of air.
23 D Deep-well pumps 9 24f. H Head loss 1 Henry’s law 1 This page has been reformatted by Knovel to provide easier navigation. Copyright (C) 2001 American Water Works Association All Rights Reserved Index Terms Links L Large orifice valves. See Air/vacuum valves O Orifice sizing air capacity table for air-release orifices 12t. discharge of air through small orifice 13f. for gravity flow 16 method for releasing air 12 for pipeline draining 15 for pipeline filling 14 for releasing air under pressure 11 for special applications 19 16t.