| 摘要 |
PROBLEM TO BE SOLVED: To easily supply a specific amount of lubricant to a meter cock. SOLUTION: This meter cock 1 comprises a container main body part 10 mounted on an inner pipe 70 connected to a gas meter GM and having an accommodation recessed part 11, a rotor part 20 rotatably accommodated in the accommodation recessed part 11 and having a communication hole 21, a lever part 30 for rotating the rotor part, and a lubricant supply device 40 mounted on an injection hole 17 of the container main body part 10 and capable of supplying the specific amount of lubricant. The rotor part 20 is provided with lubricant receiving recessed parts 23, 23', one of the lubricant receiving recessed parts 23, 23' is moved to an opening position opened to the inner pipe 70d at a downstream side to be communicated to the injection hole 17, and the communication hole 21 is moved to a position to block the inner pipe 70. When the lubricant G is injected to the injection hole 17 by the lubricant supply device 40 in this state, the desired amount of lubricant G is supplied to the lubricant receiving recessed part, and when the rotor part 20 is rotated in this state, the lubricant G is supplied to a clearance between the accommodation recessed part 11 and the rotor part 20. COPYRIGHT: (C)2004,JPO&NCIPI
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