Document Type and Number:
Japanese Patent JPS5142879
Kind Code:
B1
Abstract:
An injection apparatus for introducing a slurry of water-swellable gelling agent into a water line feeding a fixed fire-extinguishing system to form an ablative extinguishant therein. The apparatus includes a peristaltic pump driven by a hydraulic motor using water at line pressure for motive fluid and controlled by a servomechanism driven in part by a flow sensor to ensure injection rates corresponding to flow rates of water in the line. The injection apparatus is operated in a no-injection failure mode to avoid interference with normal flow of plain water to the fire-extinguishing system.
More Like This:
Application Number:
JP8756770A
Publication Date:
November 18, 1976
Filing Date:
October 07, 1970
Export Citation:
International Classes:
A62C5/00; A62D1/00; A62C5/033; (IPC1-7): A62C35/16; F16K19/00