| 摘要 |
PROBLEM TO BE SOLVED: To enhance reliability by solving problems of conventional antifreezing valves wherein the valve element part cannot be displaced by avoiding the freezing of the inside of the valve even when an antifreezing valve is used on the ground. SOLUTION: This antifreezing valve 1 comprises a valve element part 2 for opening and closing a flow water passage R between an inflow port Ri and an outflow port Ro and an acting part 3 for displacing the valve element part 2 to an opening position Xo or a closed position Xc. The antifreezing valve further comprises a sealable water storage part 4 storing a water W, and an auxiliary flow water passage Rs having a displaceable acting shaft part 5 one end 5r of which faces the water storage part 4 and the other end 5f of which is interlocked with the valve element part 2 and a biasing means 6 for biasing the acting shaft part 5 in the direction Dr of advancement into the water storage part 4 and allowing water to pass therethrough for preventing the inside S of the valve from being frozen by allowing the inflow port Ri to communicate with the outflow port Ro at the closed position Xc of the valve element part 2. COPYRIGHT: (C)2008,JPO&INPIT
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