| 摘要 |
PROBLEM TO BE SOLVED: To provide a passage selector apparatus for a fire extinguishing system, in which leakage from a seal portion is prevented by synergetic effect of a seal body on a closing face of a movable closing member and pressure applied on the seal body, rotations of the movable closing member is facilitated to prevent damage or abrasion of the seal body at a time of rotating because the pressure is not applied for the seal body at a time of moving the movable closing member. SOLUTION: The passage selector apparatus comprises: a casing 8 having three openings 8a-8c respectively communicating to the upstream and downstream of a primary pipe connected with a fire extinguisher storage container and a secondary pipe connected with a section to be extinguished; the movable closing member 9 which reciprocates over the three openings 8a-8c in a non-pressure state to close a side of one of the openings while the movable closing member 9 is play-fitted in the casing 8 by a rotational supporting shaft 11 with a clearance in an all arc direction, and of which section is in an approximately partially semicircular shape; and the seal body 10 formed by coating applied on the closing face 9a of the movable closing member 9. When the pressure is applied on the primary pipe, the movable closing member 9 is pressed by the pressure to a closing direction by the clearance to move to a closing position, and the movable closing member 9 keeps airtightness at the closing position by the seal body.
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