| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for selecting passage of a fire extinguishing system preventing damaging and abrasion due to deformation at moving of a seal body by using a multiplier effect of an energizing force and a protrusion of a movable closing member for realizing stability and maintaining of a sealing force and to restrain leak at a seal part. SOLUTION: In the fire extinguishing system wherein a primary pipe 4 piped from a fire extinguisher storage container is in a non-pressure state at a normal time and one or plural devices 8 for selecting passage to plural secondary pipes 7 communicating with a section to be fire-extinguished are arranged in series, the device 8 comprises the movable closing member 9 to reciprocate in the non-pressure state over two ports 8a, 8b communicating with a downstream side 4b of the primary pipe and the secondary pipe 7 respectively for closing one port side, the protrusion 10 formed on a closing face 9a of the movable closing member, the seal body 11 inside an annular groove 12 around the protrusion for acting as a closing face seal of the movable closing member 9 and the member 9 is always energized in a closing direction for fitting the protrusion 10 into the ports 8a, 8b at the closing position.
|
