Pressure Surge 2 : A sudden change in pressure that occurs when a valve or nozzle is suddenly opened or closed, often causing a pressure wave that can damage hose or pipe. See: Water Hammer
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}