| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas meter replacement device with which first and second gas cocks can be easily handled, primary and secondary gas cocks and the introduction port and discharge port of a gas meter can be easily connected to the first and second gas cocks, and the gas meter can be replaced without a by-pass pipe.SOLUTION: One end and the other end of a by-pass pipe (not shown) are detachably connected to first and second gas cocks 1 and 2, respectively. Consequently, a first by-pass hole 15 of the first gas cock 1 and a second by-pass hole 25 of the second gas cock 2 are communicated with each other. The first gas cock 1 can be switched to be in a first closed state in which a first inflow hole 13 is blocked with respect to a first outflow hole 14 and the first by-pass hole 15. The second gas cock 2 can be switched to be in a second closed state in which a second inflow hole 23 is blocked with respect to a second outflow hole 24 and the second by-pass hole 25. |
