Controlling Nozzle 2 : A shut-off nozzle that permits the nozzleman to open or close the nozzle at will or to adjust the pattern of the stream. See also: Shut-Off Nozzle
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}