| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hydrant device capable of simply and easily inspecting a hose. <P>SOLUTION: In a state of closing a hydrant valve 54, a ball feed port of an inspection ball sending device 60 provided in secondary side piping of the hydrant valve 54 is opened to load an inspection ball inside piping on a hose side, a gas supply hose 102 from an inert gas supply device is connected to the ball feed port, the inert gas of a prescribed pressure is supplied into the piping to move the inspection ball toward the side of the hose 44 and discharge it through the inside of the hose 44, and normality of the hose is inspected. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
