Surge Transients Due to Check Valve Closure in a Municipal Water Pumping Station
David Lozano Solé and Roger Bosch Segarra, Aquatec Proyectos para el Sector del Agua SAU (SUEZ Group), Spain; Trey Walters, Applied Flow Technology, USA - Presented at the 13th International Conference on Pressure Surges 2018, Bordeaux, France, November 14-16, 2018 - Copyright © 2018, BHR Group
Abstract: The present study highlights the importance of proper check valve selection to mitigate water hammer and its associated problems. Two different check valves were installed in a pumping station in a municipal water transfer system: a swing check valve and a nozzle check valve. Measurements were taken of pipeline pressures after a pump trip and resulting check valve closure. The field data was compared to predictions from a model using a commercial water hammer tool. Commonly accepted methods for estimating reverse liquid velocity at check valve closure were utilized. Results were also compared to previous experimental test from other authors. The calibrated model results matched the field data quite well. Comparisons of inferred valve characteristics to previously published results for swing and nozzle valves were not in close agreement for either tested valve.