Sprinkler Block 2 : A device used to stop the flow of water from a particular sprinkler head without shutting the system down. See also: Sprinkler Stopper, Sprinkler Tongs, Sprinkler Wedge
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}