Patent ID: 6491056
Filing Date: 2002-12-10
Classification: A62C,F16K,Y10T

Abstract:
An alarm test and drainage apparatus for use in a sprinkler fire control system, wherein a system alarm test function and a system fluid drainage function are combined in the apparatus, the apparatus comprisinga valve body; and valve means positioned in the valve body, said valve means being capable of being opened or closed to respectively alternatively enable and stop fluid flow through the valve body, such that fluid flow through the valve body occurs alternatively under a first set of test actuation conditions in a system alarm test mode of operation, and under a second set of fluid drainage actuation conditions in a system fluid drainage mode of operation, said valve means being of a linear spring type that utilizes a pressure differential across at least two sides thereof to bias a main valve in a closed condition when the main valve is fully closed in the test actuation condition.