| 摘要 |
PURPOSE:To shut off a valve automatically at the time of a gas leak, by rotating a main cock valve with a tripper, operating at the gas leak, via a weight. CONSTITUTION:A main cock valve actuator is attached to a propane gas cylinder body 2 by a permanent magnet 1. A weight 5 weighing merely rotating a main cock valve is situated in a weight protective cover 6 and interlocked with a main cock valve 3 with a winder through a connecting string 4. At the time of a gas leak, if a gas-leak tripper 7 is operated via a gas-leak sensor 9, the weight 5 drops down, whereby the main cock valve 3 rotates, shutting off the valve automatically.
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