Fire extinguishers – Fluid systems
Patent
1979-05-14
1982-04-27
Spar, Robert J.
Fire extinguishers
Fluid systems
137 68R, A62C 3500
Patent
active
043265898
ABSTRACT:
An antifreeze arrangement especially for automatic sprinkler systems comprising a frangible membrane, secured to a bellows interposed in the water supply pipe to the sprinkler system, antifreeze solution downstream of the membrane with water upstream thereof, the membrane being one that breaks out but does not separate from the bellows when a sprinkler relieves the pressure on the downstream side. Pressure equalizing piping connections, filling piping, and a specific gravity indicator are provided.
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Baldor Electric Company
Noland Kenneth
Spar Robert J.
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