MUTUAL WATER SUPPLY SYSTEM BY TWO NS VALVES IN SPRINKLER FIRE EXTINGUISHING FACILITY

摘要

PURPOSE: To supply water to an opened sprinkler head when the opening of a zone valve device based on the operation of a fire sensor is troubled, or a feed water main pipe is troubled. ;CONSTITUTION: When a fire breaks out for example, in a zone 3A, and a fire sensor 23 in this zone 3A is operated to generate a fire signal, a monitor board 22 specifies the floor and zone in which the fire broken out on the basis of the fire signal, and controls the opening of the zone valve device 16A in this specified zone 3A, but when the zone valve device 16A or a feed water main pipe 13A to which it is connected is troubled, a zone valve device l6B connected to the other feed water main pipe 13B and present in the other zone 13B of the same floor is open-controlled.;COPYRIGHT: (C)1995,JPO