| 摘要 |
PURPOSE: A fire valve and a joint pipe are provided, each of them is equipped with an air ejector for ejecting the air in a fire fighting water supply pipe and an air ejector for ejecting the air in the joint pipe. CONSTITUTION: The fire valve(100) has a fire fighting water inlet port(102), a fire fighting water outlet port(104) and a body(106). The body has an air ejector(200) for ejecting the air in the body to the outside. The air ejector has an air ejector body, an air exhaust passage formed within the air ejector body, an insertion protuberance which is inserted into the air exhaust passage and opens and shuts the air exhaust passage and an elastic member connected to the insertion protuberance.
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