Nonsolder Sprinkler : A sprinkler head that does not use solder as its initiating mechanism. See also: Frangible Bulb Sprinkler, Frangible-Pellet Sprinkler, High Temperature Sprinkler
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}