Sizing of Low Pressure Air Valves for Safe Filling and Draining of Pipelines

Conference paper


In order to avoid hazardous hydraulic phenomena in water systems, air valves should be included in system design, with carefully calculated orifice sizes.

This paper explains the basic principles of air flow in air valve orifice, and proposes procedures for orifice sizing. It suggests criteria for safe air and water flow velocities, and includes auxiliary tables and examples of sizing calculations.


Hydraulic Conductivity Orifice Area Water Hammer Valve Orifice Water Flow Velocity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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    Dvir, Y.:“Control appliances in water systems”, Volume 2. Lehavot Habashan, Israel,1986.(In Hebrew).Google Scholar
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    Volk, W.:“Valves in pipelines”.(Absperrorgane in Rohrleitungen). Berlin, Germany, Springer Verlag, 1959.(In German).Google Scholar
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    Webb, T. and Gould, B.W.:“Water hammer”.Kensington, Austalia, NSW University Press, 1978.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1988

Authors and Affiliations

  • Y. Dvir
    • 1
  1. 1.Lehavot HabashanIsrael

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