| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce the number of parts, to facilitate the assembly, and to reduce the occupied space of a pipe in a gas plug comprising a plug body having a gas flow passage and a plug storage part communicated therewith, a plug body turnably stored in the plug storage part and opening/closing the gas flow passage by the turn thereof, and an operation knob to turn the plug body. SOLUTION: The gas flow passage comprises one gas flow-in cylindrical part 13 communicated with a bottom part of the plug storage part 10, and first and second gas flow-out cylindrical parts 11 and 12 communicated with a body part. The plug body 2 is provided with a closing surface 20 to open/close the first gas flow-out cylindrical part 11 with the gas flow-in cylindrical part 13 constantly communicated with the second gas flow-out cylindrical part 12. A slide plug 30 constantly maintained in a closed state is connected to the second gas flow-out cylindrical part 12.</p> |
