A - Human Necessities – 62 – C
Patent
A - Human Necessities
62
C
137/4.3
A62C 37/11 (2006.01) A62C 3/06 (2006.01) A62C 37/12 (2006.01)
Patent
CA 1312801
SPRINKLER SYSTEM AND SPRINKLER ASSEMBLY ABSTRACT A fire suppression system for use with ducts carrying corrosive gases has a multiplicity of sprinkler assemblies, each having an easily replaceable adapter with a sprinkler head having a fusible alloy fill. The head is screwed into one end of the adapter which has an integral flange at its opposite end. The adapter is inserted in a flanged nozzle which is part of the duct. The adapter flange is bolted to the nozzle flange which has a central opening adapted for connection to a source of extinguishing fluid. A continuous passage for fluid is provided through the adapter and the flanges together with a passage through the sprinkler head, the latter being opened when the system is activated. Only the face of the adapter and a small protruding portion of the sprinkler head are exposed to the corrosive gases. The sprinkler head has a corrosion-resistant body and has a central passage containing a seal plug and a fusible fill at opposite ends and a piston between the fill and the plug. Upon activation, the fill melts, and fluid pressure cleanly ejects both piston and plug from the passage in the sprinkler head, thereby providing full bore for the passage of fluid. The piston insulates the fusible fill from any cooling effect, and provides reliable operation with short response times.
610082
Michalik Leo K.
Mussio Sergio G.
Gowling Lafleur Henderson Llp
Teck Cominco Metals Ltd.
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